demonstration system epc9129 quick start guide · 2018-05-31 · quick start guide 6.78 mhz, 33 w...

Demonstration System EPC9129Quick Start Guide6.78 MHz, 33 W Class 4 Wireless Power System using EPC8010/EPC2038/EPC2019/EPC2016C

Revision 1.0

QUICK START GUIDE

2 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2018

Demonstration System EPC9129

DESCRIPTION The EPC9129 wireless power demonstration system is a high efficiency, AirFuelTM Alliance compatible, Zero Voltage Switching (ZVS), voltage mode class-D wireless power transfer demonstration kit capable of delivering up to 33 W into a transmit coil while operating at 6.78 MHz (Lowest ISM band). The purpose of this demonstration system is to simplify the evaluation process of wireless power technology using eGaN® FETs.

The EPC9129 wireless power system is comprised of the four boards (shown in figure 1), namely:

1) A Source Board (Transmitter or Power Amplifier) EPC9512

2) A Class 4 AirFuel compliant Source Coil (Transmit Coil)

3) A Category 3 AirFuel Alliance compliant Receive Device EPC9513

4) A Category 5 AirFuel Alliance compliant Receive Device EPC9514

The amplifier board (EPC9512) features the enhancement-mode, 100 V rated EPC8010 eGaN FET as the main power stage in a dual half bridge configuration; the 100 V rated EPC2038 eGaN FET used as the synchronous bootstrap FET, and the 200 V rated EPC2019 eGaN FET used in the SEPIC pre-regulator. The amplifier can be set to operate in either differential mode or single-ended mode and includes the gate driver(s), oscillator, and feedback controller for the pre-regulator that ensures operation for wireless power control based on the AirFuel standard. This allows for compliance testing to the AirFuel class 4 standard over a load range as high as ±35j Ω.

The EPC9512 can operate in either single-ended or differential mode by changing a jumper setting. This allows for high efficiency operation with load impedance ranges suitable for single ended operation.

The circuits used to adjust the timing for the ZVS class-D amplifiers have been separated to further ensure highest possible efficiency setting. Each half bridge also includes separate ZVS tank circuits.

The amplifier is equipped with a pre-regulator controller that adjusts the voltage supplied to the ZVS class-D amplifier based on the limits of 3 parameters: coil current, DC power delivered to the ZVS class-D amplifier, and maximum operating voltage of the ZVS class-D amplifier. The coil current has the lowest priority followed by the power delivered and amplifier supply voltage having the highest priority. Changes in the device load power demand, physical placement of the device on the source coil and other factors, such as metal objects in proximity to the source coil, contribute to variations in coil current, DC power, and amplifier voltage requirements. Under any of these conditions, the controller will ensure the correct operating conditions for the ZVS class-D amplifier based on the AirFuel standard. The pre-regulator can be bypassed to allow testing with custom control hardware. The board

further allows easy access to critical measurement nodes for accurate power measurement instrumentation hookup. A simplified diagram of the amplifier board is given in figure 2.

The source and device coils are AirFuel compliant and have been pre-tuned to operate at 6.78 MHz with the EPC9512 amplifier. The source coil is AirFuel class 4 compliant and the device coils are AirFuel category 3 and category 5 compliant.

The EPC9513 (Category 3) device board includes a high frequency Schottky diode based full-bridge rectifier, DC smoothing capacitor and 5 V regulator. The regulator is based on a SEPIC converter that features a 200 V EPC2019 eGaN FET. The power circuit is attached to the backside of the coil which is provided with a ferrite shield that prevents the circuit from shunting the coil’s magnetic field.

The EPC9514 (Category 5) device board includes a high frequency Schottky diode based full-bridge rectifier, DC smoothing capacitor and 19 V regulator. The regulator is based on a SEPIC converter that features a 100 V EPC2016C eGaN FET. The power circuit is attached to the side of the coil.

For more information on the EPC8010, EPC2038, EPC2019, or EPC2016C please refer to the datasheet available from EPC at www.epc-co.com. The datasheet should be read in conjunction with this quick start guide.

Figure 1: EPC9129 demonstration system.

EPC9512Ampli�er Board

60 mm

58 m

m

115 m

m

228 mm

152 mm

EPC9513Category 3Device Board

150 m

m

EPC9514Category 5Device Board

63 mm

79 m

m

http://epc-co.com/epc/Products/eGaNFETsandICs.aspx

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EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2018 | | 3


MECHANICAL ASSEMBLY The assembly of the EPC9129 Wireless Demonstration kit is simple and shown in figure 1. The source coil and amplifier have been equipped with SMA connectors. The source coil is simply connected to the amplifier. The device board do not need to be mechanically attached to the source coil.

The coil sets of the EPC9111 and EPC9112 (both the source and device coils) are not compatible with the EPC9129 kit. To prevent inadvertent connection of either, the connectors of the amplifier and coils have been changed from reverse polarity to standard polarity. Please contact EPC for modifications to the original coil set to ensure compatibility with the EPC9512 amplifier.

It is recommended to insert a thin plastic insulator on top of the source coil to prevent accidental contact during operation when locating the device coils that can prevent damage to the amplifier.

DETAILED DESCRIPTION The Amplifier Board (EPC9512)

Figure 2 shows the system block diagram of the EPC9512 ZVS class-D amplifier with pre-regulator and figure 3 shows the details of the ZVS class-D amplifier section. The pre-regulator is used to control the ZVS class-D wireless power amplifier based on three feedback parameters 1) the magnitude of the coil current indicated by the green LED, 2) the DC power drawn by the amplifier indicated by the yellow LED and 3) a maximum supply voltage to the amplifier indicated by the red LED. Only one parameter at any time is used to control the pre-regulator with the highest priority being the maximum voltage supplied to the amplifier followed by the power delivered to the amplifier and lastly the magnitude of the coil current. The maximum amplifier supply voltage is pre-set to 80 V and the maximum power drawn by the amplifier is pre-set to 33 W. The coil current magnitude is pre-set to 1.375 ARMS but can be made adjustable using P25. The pre-regulator comprises a SEPIC converter that can operate at full power from 17.4 V through 24 V. If the system is operating in coil current limit mode, then the green LED will illuminate. For power limit mode, the yellow LED will illuminate. Finally, when the pre-regulator reaches maximum output voltage the red LED will illuminate indicating that the system is no longer able to operate to the AirFuel standard as the load impedance is too high for the amplifier to drive. When the load impedance is too high to reach power limit or voltage limit mode, then the current limit LED will illuminate incorrectly indicating current limit mode. This mode also falls outside the AirFuel standard and by measuring the amplifier supply voltage across TP1 and TP2 will show that it has nearly reached its maximum value limit.

The pre-regulator can be bypassed by connecting the positive supply directly to the ZVS class-D amplifier supply after removing the jumper at location JP1 and inserting the jumper into location JP50 to disable the pre-regulator followed by connecting the main positive supply to the bottom pin of JP1.

JP1 can also be removed and replaced with a DC ammeter to directly measure the current drawn by the amplifier. When doing this observe a low impedance connection to ensure continued stable operation of the controller. Together with the Kelvin voltage probes (TP1 and TP2) connected to the amplifier supply, an accurate measurement of the power drawn by the amplifier can be made.

The EPC9512 is also provided with a miniature high efficiency switch-mode 5 V supply to power the logic circuits on board such as the gate drivers and oscillator.

The amplifier comes with its own low supply current oscillator that is pre-programmed to 6.78 MHz ± 678 Hz. It can be disabled by placing a jumper into JP70 or can be externally shutdown using an externally controlled open collector / drain transistor on the terminals of JP70 (note which is the ground connection). The switch needs to be capable of sinking at least 25 mA. An external oscillator can be used instead of the internal oscillator when connected to J70 (note which pin is the ground connection) and the jumper (JP71) is removed.

Table 1: Performance Summary (TA = 25°C) EPC9512

Symbol Parameter Conditions Min Max Units

VINBus Input Voltage Range –

Pre-Regulator ModeAlso used in bypass

mode for logic supply 17.4 24 V

VIN Amp Input Voltage Range – Bypass Mode 0 80 V

VOUT Switch-Node Output Voltage 80 V

IOUT Switch-Node Output Current (each) 1.8* A

Vextosc External Oscillator Input Threshold Input ‘Low’ -0.3 0.8 V

Input ‘High’ 2.4 5 V

VPre_Disable Pre-Regulator Disable Voltage Range Floating -0.3 5.5 V

IPre_Disable Pre-Regulator Disable Current Floating -10 10 mA

VOsc_Disable Oscillator Disable Voltage Range Open Drain/Collector -0.3 5 V

IOsc_Disable Oscillator Disable Current Open Drain/Collector -25 25 mA

VsgnDiff Differential or Single-Select Voltage Open Drain/Collector -0.3 5.5 V

IsgnDiff Differential or Single-Select Current Open Drain/Collector -1 1 mA

* Maximum current depends on die temperature – actual maximum current will be subject to switching frequency, bus voltage and thermals.

Table 2a: Performance Summary (TA = 25°C) EPC9513 - Category 3 Device Board


VUnreg Un-regulated output voltage 38 V

IUnreg Un-regulated output current 1.5* A

VUnreg_UVLOR UVLO Enable Un-regulated voltage rising 10.96 V

VUnreg_UVLOF UVLO Disable Un-regulated voltage falling 5.96 V

VOUT Output Voltage Range VUnreg_min = 8.3 V 4.8 5.1 V

IOUT Output Current Range VUnreg_min = 8.3 V 0 1* A

Table 2b: Performance Summary (TA = 25°C) EPC9514


VUnreg Un-regulated output voltage 12.5 48 V

IUnreg Un-regulated output current 1.4* A

VUnreg_UVLOR UVLO Enable Un-regulated voltage rising 25 V

VUnreg_UVLOF UVLO Disable Un-regulated voltage falling 12.5 V

VOUT Output Voltage Range VUnreg_min = 8.3 V 18.75 19.25 V

IOUT Output Current Range VUnreg_min = 12.5 V 0 1.4* A

* Actual maximum current subject to operation temperature limits.

* Actual maximum current subject to operation temperature limits.

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The pre-regulator can also be disabled in a similar manner as the oscillator using JP50. However, note that this connection is floating with respect to the ground so removing the jumper for external connection requires a floating switch to correctly control this function. Refer to the datasheet of the controller IC and the schematic in this quick start guide for specific details.

The ZVS timing adjust circuits for the ZVS class-D amplifiers are each independently settable to ensure highest possible efficiency setting and includes separate ZVS tank circuits.

Additional protection features

An undervoltage-lockout circuit has been implemented for the input voltage (VIN). The amplifier board will not start unless VIN reaches its minimum required value specified in table 1.

A clamp diode also protects the board from VIN over-voltage for a brief period and accidental reverse polarity connection with up to 11 A current protection.

On-Off-Key (OOK) modulation

On-Off-Key (OOK) modulation (as illustrated in figure 6) can be implemented by applying the modulation signal at J76. It is compatible with 5 V logic only. When the signal is high, the power stage functions normally; when the signal is low, the gate drive signal of one half-bridge is shut off. Therefore, for optimal performance, the signal should be synchronized with the oscillator signal. The modulation signal should also change state between the oscillator states and must complete an even number of clock cycles. Failure to follow this will lead to DC voltage shift on the ZVS capacitor (Czvs) and other harmonic generation issues in the amplifier output. The OOK modulation frequency will also become present and thus could lead to radiated emission violations if the frequency exceeds what is allowed in the ISM band.

When not using OOK modulation, J76 should be left open – an on-board pull-up resistor keeps the level high.

Single ended or Differential Mode operation

The EPC9512 amplifier can be operated in one of two modes; single-ended or differential mode. Single ended operation offers higher amplifier efficiency but reduced imaginary impedance drive capability. If the reflected impedance of the tuned coil load exceeds the capability of the amplifier to deliver the desired power, then the amplifier can be switched over to differential mode. In differential mode, the amplifier is capable of driving an impedance range of 1 Ω through 56 Ω and ±35j Ω and maintains either the 1.375 ARMS coil current or deliver up to 33 W of power. The EPC9512 is set by default to differential mode and can be switched to single ended mode by inserting a jumper into J75. When inserted the amplifier operates in the single-ended mode. Using an external pull down with floating collector drain connection will have the same effect. The external transistor must be capable of sinking 25 mA and withstand at least 6 V.

For differential mode only operation, the two ZVS inductors LZVS1 and LZVS2 can be replaced by a single inductor LZVS12 and by removing CZVS1 and CZVS2.

ZVS Timing Adjustment

Setting the correct time to establish ZVS transitions is critical to achieving high efficiency with the EPC9512 amplifier. This can be done by selecting the values for R71, R72, R77, and R78 or P71, P72, P77, and P78 respectively. This procedure is best performed using a potentiometer installed at the appropriate locations that is used to determine the fixed resistor values. The procedure is the same for both single-ended and differential mode of operation. The timing MUST initially be set WITHOUT the source coil connected to the amplifier. The timing diagrams are given in figure 12 and should be referenced when following this procedure. Only perform these steps if changes have been made to the board as it is shipped preset. The steps are:

1. With power off, remove the jumper in JP1 and install it into JP50 to place the EPC9512 amplifier into Bypass mode. Connect the main input power supply (+) to JP1 (bottom pin for bypass mode) with ground connected to J1 ground (-) connection.

2. With power off, connect the control input power supply bus (19 V) to (+) connector (J1). Note the polarity of the supply connector.

3. Connect a LOW capacitance oscilloscope probe to the probe-hole of the half-bridge and the ground post.

4. Turn on the control supply – make sure the supply is approximately 19 V.

5. Turn on the main supply voltage starting at 0 V and increasing to the required predominant operating value (such as 24 V but NEVER exceed the absolute maximum voltage of 80 V).

6. While observing the oscilloscope adjust the applicable potentiometers to achieve the green waveform of figure 12.

7. Repeat for the other half-bridge.

8. Replace the potentiometers with fixed value resistors if required. Remove the jumper from JP50 and install it back into JP1 to revert the EPC9512 back to pre-regulator mode.

Determining component values for LZVS

The ZVS tank circuit is not operated at resonance, and only provides the necessary negative device current for self-commutation of the output voltage at turn off. The capacitors CZVS1 and CZVS2 are chosen to have a very small ripple voltage component and are typically around 1 µF. The amplifier supply voltage, switch-node transition time will determine the value of inductance for LZVSx which needs to be sufficient to maintain ZVS operation over the DC device load resistance range and coupling between the device and source coil range and can be calculated using the following equation:

Where:

Δtvt = Voltage Transition Time [s]

ƒSW = Operating Frequency [Hz]

COSSQ = Charge Equivalent Device Output Capacitance [F]

Cwell = Gate driver well capacitance [F]. Use 20 pF for the LM5113

LZVS =∆tvt

8 fsw (COSSQ + Cwell )(1)

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NOTE. The amplifier supply voltage VAMP is absent from the equation as it is accounted for by the voltage transition time. The COSS of the EPC8010 eGaN FETs is on the same order of magnitude as the gate driver well capacitance Cwell which as a result must now be included in the ZVS timing calculation. The charge equivalent capacitance of the eGaN FETs can be determined using the following equation:

(2)

To add additional immunity margin for shifts in coil impedance, the value of LZVS can be decreased to increase the current at turn off of the devices (which will increase device losses). Typical voltage transition times range from 2 ns through 8 ns. For the differential case the voltage and charge (COSSQ) are doubled when calculating the ZVS inductance.

The Source Coil

Figure 4 shows the schematic for the source coil which is Class 4 AirFuel compliant. The matching network includes only series tuning. The matching network series tuning is differential to allow balanced connection and voltage reduction for the capacitors.

The Device Boards

Figure 5 shows the basic schematic diagram of the EPC9513 and EPC9514 device boards which comprises a tuning circuit for the device coil with a common-mode choke for EMI suppression, a high frequency rectifier and SEPIC converter based output regulator. The EPC9513 is powered using a Category 3 AirFuel Alliance compliant device coil and the EPC9514 is powered using a Category 5 AirFuel Alliance compliant device coil Both are by default tuned to 6.78 MHz for the specific coil provided with it. The tuning circuit comprises both parallel and series tuning which is also differential to allow balanced connection and voltage reduction for the capacitors.

The device boards have have limited over-voltage protection using a TVS diode that clamps the un-regulated voltage to 38 V (EPC9513) or 46 V (EPC9514) . This can occur when the receive coil is placed above a high power transmitter with insufficient distance to the transmit coil and there is little or no load connected. During an over-voltage event, the TVS diode will dissipate a large amount of power and the red LED will illuminate indicating an over-voltage. The receiver should be removed from the transmitter as soon as possible to prevent the TVS diode from over-heating.

The EPC9513 and EPC9514 can be operated with or without the regulator. The regulator can be disabled by inserting a jumper into position JP50 and connecting the load to the unregulated output terminals. In regulated mode, the design of the EPC9513 and EPC9514 controller will ensure stable operation in a wireless power system. The regulator operates at 280 kHz (EPC9513) or 300 kHz (EPC9514) and the controller features over current protection that limits the load current to 1 A for the EPC9513 and 2 A for the EPC9514.

The EPC9513 and EPC9514 device boards come equipped with Kelvin connections for easy and accurate measurement of the un-regulated and regulated output voltages. The rectified voltage current can also

be measured using the included shunt resistor. In addition, the EPC9513 and EPC9514 have been provided with a switch-node measurement connection for low inductance connection to an oscilloscope probe to yield reliable waveforms.

The EPC9513 is designed to operate in conjunction with EPC9127 (10 W EPC9510), EPC9128 (16 W EPC9509), EPC9129 (33 W EPC9512) and EPC9121 (10 W EPC9511) transmitter units. The EPC9514 is designed to operate in conjunction with EPC9129 (33 W EPC9512) transmitter units.

QUICK START PROCEDURE The EPC9129 demonstration system is easy to set up and evaluate the performance of the eGaN FET in a wireless power transfer application. Refer to figure 1 to assemble the system and figures 8, 9, and 10 for proper connection and measurement setup before following the testing procedures.

The EPC9512 can be operated using any one of two alternative methods:

a. Using the pre-regulator

b. Bypassing the pre-regulator

a. Operation using the pre-regulatorThe pre-regulator is used to supply power to the amplifier in this mode and will limit the coil current, power delivered or maximum supply voltage to the amplifier based on the pre-determined settings.

The main 19 V supply must be capable of delivering 2.3 ADC. DO NOT turn up the voltage of this supply when instructed to power up the board, instead simply turn on the supply. The EPC9512 board includes a pre- regulator to ensure proper operation of the board including start up.

1. Make sure the entire system is fully assembled prior to making electrical connections and make sure jumper JP1 is installed. Also make sure the source coil and device coil with load are connected.

2. With power off, connect the main input power supply bus to J1 as shown in figure 8. Note the polarity of the supply connector.

3. Make sure all instrumentation is connected to the system.

4. Turn on the main supply voltage to the required value (19 V).

5. Once operation has been confirmed, observe the output voltage and other parameters on both the amplifier and device boards.

6. For shutdown, please follow steps in the reverse order.

b. Operation bypassing the pre-regulatorIn this mode, the pre-regulator is bypassed and the main power is connected directly to the amplifier. This allows the amplifier to be operated using an external regulator.Note: In this mode there is no protection for ensuring the correct operating conditions for the eGaN FETs.When in bypass mode it is crucial to slowly turn up the supply voltagestarting at 0 V. Note that in bypass mode you will be using two supplies; one for logic and the other for the amplifier power.

1. Make sure the entire system is fully assembled prior to making electrical connections and make sure jumper JP1 has been removed and installed in JP50 to disable the pre-regulator and to place the EPC9512 amplifier in bypass mode. Also make sure the source coil and device coil with load are connected.

COSSQ = VAMP

∫0VAMP

COSS (v) dv1

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2. With power off, connect the main input power supply bus +VIN to the bottom pin of JP1 and the ground to the ground connection J1 as shown in figure 8.

3. With power off, connect the control input power supply bus to J1. Note the polarity of the supply connector. This is used to power the gate drivers and logic circuits.

4. Make sure all instrumentation is connected to the system.5. Turn on the control supply – make sure the supply is 19 V range.6. Turn on the main supply voltage to the required value (it is recommended

to start at 0 V and do not exceed the absolute maximum voltage of 80 V).7. Once operation has been confirmed, adjust the main supply voltage

within the operating range and observe the output voltage, efficiency and other parameters on both the amplifier and device boards.

8. For shutdown, please follow steps in the reverse order. Start by reducing the main supply voltage to 0 V followed by steps 6 through 2.

NOTE. 1. When measuring the high frequency content switch-node (Source Coil Voltage), care

must be taken to avoid long ground leads. An oscilloscope probe connection (preferred method) has been built into the board to simplify the measurement of the Source Coil Voltage (shown in figure 11).

2. AVOID using a Lab Benchtop programmable DC as the load for the category 3 and category 5 device boards. These loads have low control bandwidth and will cause the EPC9129 system to oscillate at a low frequency and may lead to failure. It is recommended to use a fixed low inductance resistor as an initial load. Once a design matures, a post regulator, such as a Buck converter, can be used.

Go to www.epc-co.com periodically for updates on new wireless power device demon-stration boards capable of delivering a regulated output.

THERMAL CONSIDERATIONSThe EPC9129 demonstration system showcases the EPC8010, EPC2019, EPC2038, and EPC2016C in a wireless energy transfer application. Although the electrical performance surpasses that of traditional silicon devices, their relatively smaller size does magnify the thermal management requirements. The operator must observe the temperature of the gate driver and eGaN FETs to ensure that both are operating within the thermal limits as per the datasheets.

NOTE. The EPC9129 demonstration system has limited current and thermal protection only when operating off the Pre-Regulator. When bypassing the pre-regulator there is no current or thermal protection on board and care must be exercised not to over-current or over-temperature the devices. Excessively wide coil coupling and load range variations can lead to increased losses in the devices.

Pre-CautionsThe EPC9129 demonstration system has no enhanced protection systems and therefore should be operated with caution. Some specific precautions are:

1. Never operate the EPC9129 system with a device board that is AirFuel compliant as this system does not communicate with the device to correctly setup the required operating conditions and doing so can lead to failure of the device board. Please contact EPC should operating the system with an AirFuel compliant device be required to obtain instructions on how to do this. Please contact EPC at [email protected] should the tuning of the coil be required to suit specific conditions so that it can be correctly adjusted for use with the ZVS class-D amplifier.

2. There is no heat-sink on the devices and during experimental evaluation it is possible present conditions to the amplifier that may cause the devices to overheat. Always check operating conditions and monitor the temperature of the EPC devices using an IR camera.

3. Never connect the EPC9512 amplifier board into your VNA in an attempt to measure the output impedance of the amplifier. Doing so will severely damage the VNA.

Figure 3: Diagram of EPC9512 ZVS class-D amplifier circuit.

Figure 2: Block diagram of the EPC9512 wireless power amplifier.

+

VAMP

Q1_a L ZVS12

Q 2_a

Q 1_b

Q 2_b

L ZVS2

C ZVS2 C ZVS1

L ZVS1

Coil connection

Single Ended Operation Jumper

Pre-regulator

Pre-regulator jumper

JP1

J1

VIN

Bypass mode connection

ZVS class D SEPICPre-regulator ampli�er

19 VDC

4 VDC –80 VDC

C s

Coil

XIamp Pamp

Vamp

Icoil

Combiner

Control reference signal

Icoil

http://http://epc-co.com/epc

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Figure 4: Schematic of AirFuel Class 4 source coil.

Figure 6: ON-OFF-KEY modulation.

Source coil

Coil connection

Tuning network

Class 3 coil

f = 6.78 MHz

ON-OFF KEY modulation

Figure 5: Schematic diagram of the EPC9513 and EPC9514 demo board.

Load

Devicecoil

Un-RegulatedDC output

Tuning Network Recti�erRegulator

RegulatedDC output

Coil connection

COUT

CRect

VOUT

CSeptic

Q1

Drect

LlowerLM11

LM1CMx

CMPx

LE1 CMx

Lupper

Figure 7: Proper connection for the source coil.

Tuning

Ampli�erConnection

EFFICIENT POWER CONVERSION

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Figure 9: Proper connection and measurement for the EPC9513 receiver board.

Switch node

Regulatedvoltagemeasurement

Measurement points

Regulator

Coil tuning

Coil connection Disable regulator

Un-regulatedload connection

Regulatedload connection

mV

Recti�er voltage(0 V - 38 Vmax)

Recti�er DCcurrent(75 mΩ shunt)

Recti�er voltage>5 V LED

Recti�er voltage<36 V LED

V

V

Figure 8: Proper connection and measurement setup for the amplifier board.

17-24 VDC VIN supply

(note polarity)

Source coil connection

External oscillator

Switch-node main oscilloscope probe

Switch-node secondaryoscilloscope probe

Ground post

Ampli�er voltage source jumper

Disableoscillatorjumper

Single ended / di�erential mode

operation selector

Coil current setting

Ampli�er timing setting(not installed)

Disable pre-regulator jumper

Internal oscillator selection jumper

+

Pre-regulator jumper Bypass connection

OOK modulationcontrol input

Operating mode LED indicators

Ground post

Ground post

Ampli�er supply voltage(0 V –80 Vmax)V

Switch-nodepre-regulator

oscilloscope probe

J1

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Figure 11: Measurement locations of switch node waveforms on EPC9512 amplifier board.

Figure 12: ZVS timing diagrams.

Shoot-through

Shoot-through

Q2 turn-on

Q1 turn-o�

VAMP

0time

ZVS

Partial ZVS

ZVS + diode conduction

Q1 turn-on

Q2 turn-o�

VAMP

0time

ZVS

Partial ZVS

ZVS + diode conduction

Figure 10: AirFuel Category 5 device board.

Disable RegulatorCoil Connection

VRecti�er Voltage(12.5 V – 48 Vmax)

V

mV

Regulated loadconnection

Coil tuning

Recti�er DC Current(75 mΩ Shunt)

Recti�er voltage > 4 V LED

Recti�er voltage> 44 V LED

Un-Regulated load connection

Regulatedvoltagemeasurement

Regulator

Switch-nodemeasurement points

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(continued on next page)(continued on next page)

Table 4: Bill of Materials - Amplifier BoardItem Qty Reference Part Description Manufacturer Part #

1 3 C1a, C1b, C80 1 µF, 10 V TDK C1005X7S1A105M050BC

2 14 C2a, C2b, C4a, C4b, C5a, C5b, C70, C71, C72, C77, C78, C81, C130, C220 100 nF, 16 V Würth 885012205037

3 3 C3a, C3b, C95 22 nF, 25 V Würth 885012205052

4 10 C6a, C6b, C7a, C7b, C31, C32, C44, C75, C76, C82 22 pF, 50 V Würth 885012005057

5 6 C11a, C11b, C12a, C12b, C13a, C13b 10 nF, 100 V TDK C1005X7S2A103K050BB

6 8 C14a, C14b, C15a, C15b, C16a, C16b, C17a, C17b 1 µF, 100 V TDK C2012X7S2A105K125AB

7 1 C21 (not populated) 680 pF, 50 V Murata GRM155R71H681KA01D

8 1 C73 (not populated) 22pF, 50 V Würth 885012005057

9 2 C133, C223 (not populated) 1 nF, 50 V Murata GRM1555C1H102JA01D

10 1 C22 390 pF, 50 V Murata GRM1555C1H391GA01D

11 2 C30, C50 100 nF, 100 V Murata GRM188R72A104KA35D

12 2 C33, C53 10 nF, 50 V Murata GRM155R71H103KA88D

13 1 C51 0.82 µF, 10 V Murata GRM155R61A824KE15D

14 1 C52 100 pF Murata GRM1555C1H101JA01D

15 1 C54 22 nF, 50 V Murata GRM155R71H223KA12D

16 1 C55 1 µF, 25 V TDK C1005X5R1E105M050BC

17 3 C61, C62, C63 22 µF, 35 V TDK C3216JB1V226M160AC

18 2 C64, C65 4.7 µF, 100 V TDK CGA6M3X7S2A475M200AB

19 1 C67 (not populated) 10 nF, 100 V TDK C1608X7R2A103K080AA

20 3 C90, C91, C92 1 µF, 25 V Würth 885012206076

21 2 C131, C221 1 nF, 50 V Murata GRM1555C1H102JA01D

22 2 Czvs1, Czvs2 1 µF, 50 V Würth 885012207103

23 1 D1 25 V, 11 A Littelfuse SMAJ22A

24 3 D1a, D1b, D95 40 V, 300 mA ST BAT54KFILM

25 13 D2a, D2b, D3a, D3b, D21, D40, D41, D42, D71, D72, D76, D77, D78 40 V, 30 mA Diodes Inc. SDM03U40

26 2 D4a, D4b 5 V1, 150 mW Comchip Technology CD0603-Z3V9

27 1 D35 LED 0603 yellow Lite-On LTST-C193KSKT-5A

28 1 D36 LED 0603 green Lite-On LTST-C193KGKT-5A

29 1 D37 LED 0603 red Lite-On LTST-C193KRKT-5A

30 1 D47 40 V, 30 mA Diodes Inc. SDM03U40-7

31 1 D60 200 V, 3 A On Semiconductor NRVBS3200T3G

32 1 D67 (not populated) 200 V, 1 A Diodes Inc. DFLS1200

33 1 D90 40 V, 1 A Diodes Inc. PD3S140-7

34 1 D221 3 V9, 150 mW Bournes CD0603-Z3V9

35 3 GP1a, GP1b, GP60 .1" male vert. Würth 61300111121

36 1 J1 .156" male vert. Würth 645002114822

37 1 J2 SMA board edge Linx CONSMA003.062

38 7 J70, J75, J76, JP1, JP50, JP70, JP71 .1" male vert. Würth 61300211121

39 1 JMP1 DNP

40 2 JP10, JP72 Jumper 100 Würth 60900213421

41 1 L60 100 µH, 3 A CoilCraft MSD1514-104KE

42 1 L80 10H, 150 mA Taiyo Yuden LBR2012T100K

43 1 L90 47 µH, 250 mA Würth 7440329470

44 1 Lsns (not populated) 82 nH CoilCraft 1515SQ-82NJEB

45 2 Lzvs1, Lzvs2 500 nH CoilCraft 2929SQ-501JE

46 1 Lzvs12 (not populated) DNP CoilCraft

47 1 P25 (not populated) 10 kΩ Murata PV37Y103C01B00

48 4 P71, P72, P77, P78 (not populated) 1 kΩ Murata PV37Y102C01B00

49 4 Q1a, Q1b, Q2a, Q2b 100 V, 160 mΩ EPC EPC8010

50 2 Q3a, Q3b 100 V, 3300 mΩ EPC EPC2038

QUICK START GUIDE



Table 4: Bill of Materials - Amplifier Board (continued)Item Qty Reference Part Description Manufacturer Part #

51 1 Q60 200 V, 9 A, 43 mΩ EPC EPC2019

52 3 R2a, R2b, R82 20 Ω Stackpole RMCF0402JT20R0

53 2 R3a, R3b 27 k Panasonic ERJ-2GEJ273X

54 2 R4a, R4b 4.7 Ω Panasonic ERJ-2GEJ4R7X

55 1 R21 33 Ω, 1/2 W Panasonic ERJ-P06J330V

56 1 R25 4.3 k 1% Panasonic ERJ-2RKF4301X


58 1 R30 (not populated) 100 Ω Panasonic ERJ-3EKF1000V

59 1 R31 82.5 k 1% Panasonic ERJ-3EKF8252V


61 1 R33 56 k Panasonic ERJ-2RKF5602X

62 1 R34 100 Ω Panasonic ERJ-3EKF1000V

63 2 R35, R36 634 Ω Panasonic ERJ-2RKF6340X

64 1 R37 150 k 1% Panasonic ERJ-2RKF1503X

65 2 R38, R91 49.9 k 1% Panasonic ERJ-2RKF4992X

66 2 R40, R130 316 k Panasonic ERJ-3EKF3163V

67 4 R41, R49, R131, R221 6.04 k Panasonic ERJ-2RKF6041X

68 1 R42 41.2 k Panasonic ERJ-2RKF4122X


70 2 R44, R90 100 k 1% Panasonic ERJ-2RKF1003X


72 1 R50 10 Ω Panasonic ERJ-3EKF10R0V

73 1 R51 124 k 1% Panasonic ERJ-2RKF1243X


75 1 R53 12 Ω Panasonic ERJ-2RKF12R0X

76 1 R54 0 Ω Yageo RC0402JR-070RL


78 1 R57 160 k Panasonic ERJ-3EKF1603V

79 1 R58 33 k Panasonic ERJ-3GEYJ333V

80 1 R60 20 mΩ, 0.4 W Vishay Dale WSLP0603R0200FEB

81 1 R61 75 mΩ, 0.25 W Vishay Dale RCWE080575L0FKEA

82 1 R67 (not populated) 10 k 5%, 2/3 W Panasonic ERJ-P08J103V


84 2 R71, R78 180 Ω Panasonic ERJ-2RKF1800X

85 2 R72, R77 51 Ω Panasonic ERJ-2RKF51R0X

86 3 R73, R75, R76 10 k Panasonic ERJ-2GEJ103X

87 1 R80 2.2 Ω Yageo RC0402JR-072R2L

88 1 R92 9.53 k,1% Panasonic ERJ-2RKF9531X

89 2 R132, R222 18 k 1% Panasonic ERJ-2RKF1802X

90 2 R133, R223 6.8 k 1% Panasonic ERJ-2RKF6801X


92 1 R220 71.5 k Panasonic ERJ-3EKF7152V


94 2 TP1, TP2 SMD probe loop Keystone 5015

95 1 Tsns1 (not populated) 10 µH, 1:1, 96.9% CoilCraft PFD3215-103ME

96 1 Tsns2 1:20 current Xrmr CoilCraft CST7030-020LB

97 2 U1a, U1b 100 V eGaN driver Texas Instruments LM5113TM

98 1 U30 Power & current monitor Linear LT2940IMS#PBF

99 1 U50 Boost controller Texas Instruments LM3481MM/NOPB

100 1 U70 Pgm Osc. EPSON SG-8002CE-PHB-6.780 MHz

101 2 U71, U77 2 In NAND Fairchild NC7SZ00L6X

102 2 U72, U78 2 In AND Fairchild NC7SZ08L6X

103 1 U80 Gate driver with LDO Texas Instruments UCC27611DRV

104 1 U90 1.4 MHz, 24 V, 0.5 A buck MPS MP2357DJ-LF

105 2 U130, U220 Comparator Texas Instruments TLV3201AIDBVR

QUICK START GUIDE



Table 6: Bill of Materials - Category 3 Device Board

Item Qty Reference Part Description Manufacturer Part #

1 1 C44 Capacitor, 100 pF, 25 V Würth 885012205038

2 1 C50 Capacitor, 100 nF, 100 V Murata GRM188R72A104KA35D

3 1 C51 Capacitor, 4.7 µF, 6.3 V Murata GRM155R60J475ME47D



6 2 C55, C90 Capacitor, 1 µF, 25 V TDK C1005X5R1E105M050BC

7 3 C56, C57, C91 Capacitor, 100 nF, 16 V Würth 885012205037

8 7 C61, C62, C63, C68, C71, C72, C85 Capacitor, 10 µF, 50 V Taiyo Yuden UMK325BJ106MM-T

9 3 C64, C65, C66 Capacitor, 22 µF, 35 V TDK C3216JB1V226M160AC

10 1 C84 Capacitor, 100 nF, 50 V Würth 885012206095


12 1 CM1 Capacitor, 560 pF size 1111 Vishay VJ1111D561KXDAT

13 1 CM2 Capacitor, 20 pF size 1111 Vishay VJ1111D200JXRAJ

14 1 CM12 Capacitor, 680 pF size 1111 Vishay VJ1111D681KXDAT

15 1 D51 Schottky Diode, 30 V, 500 mA ST STPS0530Z

16 1 D60 Schottky Diode, 100 V, 3 A ST STPS3H100UF

17 4 D80, D81, D82, D83 Schottky Diode, 40 V, 1 A Diodes Inc. PD3S140-7

18 1 D84 LED 0603 Green Würth 150060VS75000

19 1 D85 Zener Diode, 2.7 V, 250 mW NXP BZX84-C2V7,215

20 1 D86 LED 0603 Red Würth 150060SS75000

21 1 D87 Zener Diode, 33 V, 250 mW NXP BZX84-C33,215

22 1 D88 TVS Diode, 35 V, 8.2 A Littelfuse SMAJ30A

23 1 J1 Category 3 Coil NuCurrent NC20-R070L03E-079-063-0R71

24 1 J3 .1" Male Vert. SMD 2 x 2 Amphenol FCI 95278-101A04LF

25 2 L60, L61 Inductor, 22 µH, 4.3 A Vishay Dale IHLP3232DZER220M11

26 1 L90 Inductor, 10 µH, 150 mA Taiyo Yuden LBR2012T100K

27 1 LE1 Inductor, 18 µH, 3.8 mA Eaton CMS1-4-R

28 2 LM1, LM11 Inductor, 82 nH Wurth 744912182

29 1 Q60 eGaN FET, 200 V, 9 A, 43 mΩ EPC EPC2019

30 1 R40 Resistor, 17.8 k Ω 1%, 1/10W Panasonic ERJ-3EKF1782V

31 1 R41 Resistor, 6.04 k Ω 1%, 1/10W Panasonic ERJ-2RKF6041X

32 1 R50 Resistor, 10 Ω 1%, 1/10W Panasonic ERJ-3EKF10R0V

33 1 R51 Resistor, 124 k Ω 1%, 1/10W Panasonic ERJ-2RKF1243X


35 1 R53 Resistor, 12 Ω 1%, 1/10W Panasonic ERJ-2RKF12R0X

36 1 R54 Resistor, 0 Ω JUMPER, 1/16W Yageo RC0402JR-070RL

37 1 R57 Resistor, 1 mΩ 1%, 1/10W Panasonic ERJ-3EKF1004V


39 1 R60 Resistor, 40 mΩ 1%, 0.4W Vishay Dale WSLP0603R0400FEB

40 1 R80 Resistor, 75 mΩ 1%, 2W Stackpole CSRN2512FK75L0

41 1 R81 Resistor, 4.7 k Ω 1%, 1/4W Stackpole RMCF1206FT4K70

42 1 R82 Resistor, 422 Ω 1%, 1/10W Yageo RMCF0603FT422R

43 1 R90 Resistor, 2.2 Ω 5%, 1/16W Yageo RC0402JR-072R2L

44 1 R92 Resistor, 20 Ω 5%, 1/16W Stackpole RMCF0402JT20R0

45 4 TP1, TP2, TP3, TP4 SMD Probe Loop Keystone 5015

46 1 U50 IC, Boost Controller Texas Instruments LM3481MM/NOPB

47 1 U90 IC, Gate Driver with LDO Texas Instruments UCC27611DRV

Table 5: Bill of Materials - Source Coil Item Qty Reference Part Description Manufacturer Part #

1 1 C2 7.5 pF Johanson 102S42E7R5CV3E2 2 C3, Ctrmb 220 pF Johanson 201S42E221JV4E3 1 J1 SMA PCB edge Linx CONSMA013.0624 1 Coil1 Class 4 small NuCurrent NC20-T091M01E-228-150-1R40

QUICK START GUIDE



Table 7: Bill of Materials - Category 5 Device Board

Item Qty Reference Part Description Manufacturer Part #1 1 C44 100 pF, 25 V Würth 885012205038

2 1 C50 100 nF, 100 V Murata GRM188R72A104KA35D

3 4 C51, C56, C57, C91 100 nF, 16 V Würth 885012205037

4 1 C53 220 pF, 50 V Murata GRM155R71H221KA01D

5 2 C55, C90 1 μF, 25 V TDK C1005X5R1E105M050BC

6 6 C61, C62, C63, C68, C71, C72 10 μF, 50 V Taiyo Yuden UMK325BJ106MM-T

7 3 C64, C65, C66 22 μF, 35 V TDK C3216JB1V226M160AC

8 1 C67 10nF, 200 V Kemet C0603C103K2RACTU

9 1 C70 10 μF, 50 V Nichicon UZR1H100MCL1GB

10 1 C84 100 nF, 50 V Murata GRM188R71H104KA93D

11 1 C85 10 μF, 50 V Taiyo Yuden UMK325BJ106MM-T

12 1 C92 22 pF, 50 V Würth 885012005057

13 2 CM1, CM11 390 pF Vishay VJ1111D391KXLAJ

14 1 Coil Receive Coil NuCurrent NC20-T025L01E-152-115-0R75

15 1 D51 30 V, 500 mA ST STPS0530Z

16 1 D60 100 V, 5 A Diodes PDS5100-13

17 1 D67 200 V, 1 A Diodes Inc. DFLS1200

18 4 D80, D81, D82, D83 60 V 1 A Diodes Inc. PD3S160-7

19 1 D84 LED 0603 Green Lite-On LTST-C193KGKT-5A

20 1 D85 2.7 V, 250 mW Nexperia BZX84-C2V7,215

21 1 D86 LED 0603 Red Lite-On LTST-C193KRKT-5A

22 1 D87 43 V, 250 mW Nexperia BZX84-C43,215

23 1 D88 44 V, 51.6 A Littelfuse SMDJ36A

24 1 GP60 .1" Male Vert. Würth 61300111121

25 2 J2, J3 .1" Male Vert. Amphenol FCI 95278-101A04LF

26 1 JP50 .05" 2 pos Male Vert Sullins GRPB021VWVN-RC

27 2 L60, L61 22 μH, 4.3A Vishay Dale IHLP3232DZER220M11

28 1 L90 10 μH, 150 mA Taiyo Yuden LBR2012T100K

29 1 LE1 25 µH, 5.3 A Eaton CMS2-1-R

30 2 LM1, LM11 82 nH Würth 744912182

31 1 Q60 100 V, 11 A, 16 mΩ EPC EPC2016C

32 1 R40 84.5 kΩ 1% Panasonic ERJ-3EKF8452V

33 1 R41 6.04 kΩ Panasonic ERJ-2RKF6041X

34 1 R50 10 Ω Panasonic ERJ-3EKF10R0V

35 1 R51 124 kΩ 1% Panasonic ERJ-2RKF1243X

36 1 R52 56.2 kΩ 1% Yageo RC0402FR-0756K2L

37 1 R53 2.32 kΩ Yageo RC0402FR-072K32L

38 1 R54 300 Ω Yageo RC0402JR-07300RL

39 1 R57 2.49 MΩ 1% Yageo RC0603FR-072M49L

40 1 R58 150 kΩ 1% Panasonic ERJ-2RKF1503X

41 1 R60 22 mΩ, 0.4 W Vishay Dale WSLP0603R0220FEB

42 1 R67 10 kΩ, 5% 2/3 W Panasonic ERJ-P08J103V

43 1 R80 75 mΩ, 1 W Stackpole CSRN2512FK75L0

44 1 R81 4.7 kΩ Stackpole RMCF1206FT4K70

45 1 R82 422 Ω Yageo RMCF0603FT422R

46 1 R90 2 .2 Ω Yageo RC0402JR-072R2L

47 1 R92 20 Ω Stackpole RMCF0402JT20R0

48 4 TP1, TP2, TP3, TP4 SMD probe loop Keystone 5015

49 1 U50 Boost Controller Texas Instruments LM3481MM/NOPB

50 1 U90 Gate Driver with LDO Texas Instruments UCC27611DRV

QUICK START GUIDE

EPC – EFFICIENT POWER CONVERSION CORPORATION | W

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.EPC-CO.COM | COPYRIGHT 2018 | | 14

Demonstration System

EPC9129

Figure 13: EPC9512 - ZVS class-D amplifier schematic.

19 V 2 A max

Vin5 V

VoutGND

Icoil

PreRegulatorEP C9512PR_Rev 3_1.SchDoc

Vin5 V

Vout

Pre-Regulator

SDM03U4040 V 30 m A

D71

5 V

5 V

5 V

Deadtime A Fall

Deadtime A Rise

1K

P71 EMPTY

A

B

U71NC7SZ00L 6X

A

BY

U72NC7SZ08L 6X

5 V

DSO221SHF 6.780

42

GNDOUT 3O Ω1

VCC

U70

5 V

5 V

Oscillator

IntOsc

5 V

5 V

Logic Supply Regulator

Vin

OSC

OSC

OSC

.1" Male Vert.

12

JP70

Oscillator Disable

OSCIntOsc

.1" Male Vert.

12

J70

External Oscillator

Internal / External Oscillator

5 V

5 V

5 V

Deadtime B Rise

Deadtime B Fall

A

B

U77NC7SZ00L 6X

A

BY

U78NC7SZ08L 6X

5 V

OSC

OSC

SDM03U40

D72

1K

P72 EMPTY

51 Ω

1 2R72

SDM03U40

D77

1K

P77 EMPTY

SDM03U40

D78

1K

P78 EMPTY

OSC

H_Sig1

L _Sig1

H_Sig2

L _Sig2

OSC

.1" Male Vert.

1 2

JP71

.1" Male Vert.

12

J75

Single / Di�erential Mode

nSD

nSD

nSD

5 V

10 K

12

R75

OutA

OutB

ZVS Tank Circuit

12

.156" Male Vert.J1

Vin

Main SupplyVampVout

SMA Board EdgeJ2

DNPJMP 1

Single Ended Operation Only

Pre-Regulator Disconnect

SMD probe loop

1

TP 1

SMD probe loop

1

TP 2

Vamp

VAMP5 V

GN

D

L in

OUTHin

aEP C9512_SE_ZVSclassD_Rev 3_1.SchDoc

500nHL zvs1

500 nHL zvs2

TBDL zvs12

EMP TY

1 μF 50 VCzv s2

Vamp

VAMP5 V

GN

D

L in

OUTHin

bEP C9512_SE_ZVSclassD_Rev 3_1.SchDoc

Vamp

H_Sig1

L _Sig1

H_Sig2

L _Sig2

5 V

5 V

Jumper 100

JP10

Coil Current Sense

SDM03U4040 V 30 mA

D21

Icoil

Icoil

180 Ω

1 2R71

180 Ω

1 2R78

10K

12

R73

47 K

12

R70

100nF, 16 VC77

100 nF , 16 VC78

100nF, 16 VC72

100 nF , 16 VC71

22pF, 50 VC75

22 pF , 50 VC73

EMPTY

1 μF, 25 VC90

1 μF, 25 VC92

1 μF 50 VCzv s1

100 nF , 16 VC70

Jumper 100

JP72

.1" Male Vert.

1 2

JP1

4

3

5

2

1

6

OSC

Reg

0.81 V

GND

IN

FB

EN

DRVCNTL

U90MP 2357DJ-L F

9.53 K 1%

12

R92

49.9 K 1%

12

R91

5 V

22 nF , 25 VC95

47 μH 250 mAL 90

100 K 1%

12

R90

Vin

D95

BAT54K FIL M

PD3S140-740 V 1A

D901 μF, 25 V

C91

6.81 K 1%

12

R26

51 Ω

1 2R77

4.3 K 1%

12

R25

10 KP25

EMPTY

Current Set/Adjust

Vin

Reverse Polarity Protection

1 2

10 μH 1:1 96.9%

34

Tsns1EMPTY

82 nHL sns

EMPTY

33 ohm 1/2 W

1 2

R21

680 pF , 50 VC21

EMPTY

SDM03U4040 V 30 mA

40 V 30 mA

40 V 30 mA

40 V 30 mA

D76nSD OOK M

OOK M

OOK M

.1" Male Vert.

12

J76

OOK Modulation

5 V

10K

12

R76

22 pF , 50 VC76

OOK M

25 V, 11 AD1

SMAJ22A

131:20 Current Xrmr

4 6

Tsns2CST7030- 020LB

390 pF , 50 VC22

QUICK START GUIDE

15 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | W

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.EPC-CO.COM | COPYRIGHT 2018


EPC9129

Figure 14: EPC9512 - Pre-regulator schematic for wireless power transfer source.

100 K 1%

12

R44

Vin

Isns

12 Ω

12

R53100 pF

C52

.1" Male Vert.

12

JP50

PreRegulator Disable

FA/SD

Vout

Vin

Vsepic

5V 5VGD

5VGD

GLPHGLPL

Gate Driver2Ω21 2

R80

GL PLGLPH

12

20 m Ω 0.4WR60

SW

Vin

5 V

Vout

GND

PreDR PWM

82.5 K 1%

12

R52

124 K 1%

12

R51

5 V

10nF, 50VC53

Ground Post

22 μF 35 VC62

22 μF 35 VC61

4.7 μF 100 VC64

0 Ω1 2

R54

200V 3A

D60MBRS3200T3G

Vfdbk Vin

Isns

22 μF 35 VC63

1

6

D

3

2

1.24V

12

8

7

9

CLR LE

Q

V-

V+

I-I+

4

5

11 10

VCC

GND

UVLC

Latch HiLo

CMPout

CMPout

Pmon

Imon

CMP+

U30L T2940I MS#PBF

1 2

75 mΩ 0.25 W

R61

6

2

3 EP

45

LDO VREF

VSS

1 VDD

U80UCC27611DRV

56 K1 2R33

D36

D35

Current Mode

Power Mode

Pmon

Imon

Vsepic Vout

634 Ω1 2R35 5 V

8.2 K 1%

12

R32

82.5 K 1%

12

R31

Vout

V+

Vsepic

Pcmp

DC Power Monitor

Isns

Isns

Isns

Vfdbk

Pmon

Output Voltage Limit

Output Power Limit

Output Current Limit

SDM03U4040 V 30 mA

D40

SDM03U4040 V 30mA

D41

41.2 K1 2R42

Isns

4.7μF 100 VC65

10 μH 150 mAL 80

Isns

Vout

Comp

1 2R30

EMP TY

Icoil

100nF, 100 VC50

10 Ω1 2R50

1

.1" Male Vert.GP 60

1

ProbeHole

PH60

20 Ω1 2R82

100 nF, 16 VC81

100nF, 100 VC30

22pF, 50 VC44

22 pF, 50 VC82

22pF, 50 VC32

22pF, 50 VC31

5VGD

5VGD

1μF, 10 VC80

13

100 µH 3A

4 2

L 60

Pcmp

49.9 K 1%

12

R38

6.04 K

12

R41

20.5 K

12

R43

150 K 1%

12

R37

316 K1 2R40

0.82 μF, 10 VC51

SDM03U4040 V 30mA

D42

4

31

52

U130TL V3201AI DBVR

100 nF, 16 VC130

D37

634 Ω1 2R36

5 V

5 V

Voltage Mode

Vom

Pled

Iled

Vout 18 K 1%

12

R132

6.8 K 1%

12

R133

470 K1 2R134

5 V

6.04 K

12

R131

316 K

12

R130

1nF, 50 VC131

1nF, 50 VC133

EMPTY

5 V

4

31

52

U220TL V3201AI DBVR

100nF, 16 VC220

5 V

5 V

18 K 1%

12

R222

6.8 K 1%

12

R223

5V

6.04 K

12

R221

71.5 K

12

R220

1nF, 50 VC221

1nF, 50 VC223

EMP TY

Under-Voltage Lock-Out

SDM03U40- 740 V 30 mA

D47

6.04 K1 2R49

15.4 K

12

R48

Vin

Set to 18 V with +/- 0.7 V hysteresis

UVL O

UVLO

UVLO Limit

D221

CD0603- Z3V9

330 K1 2R224

200 V 9A 43 mΩ

Q60EPC2019

1μF, 25 VC55

160 K

12

R57

33 K

12

R58

UVLO Ven=18 V, Vsh=17.2 V

75

BiasOsc

4

8

Pgnd

1.275 V

Cnt

FA/Sync/SD

FB

Comp

10

6

Agnd

Isens

Vin

3

1

DR

2

9

UVLOU50

L M3481MM/NOP B

Vin

100 Ω1 2R34Vin

23.2 K1

2R55

22 nF, 50 VC54

Vfdbk

10nF, 50 VC33

200 V, 1AD67

EMPTY

10nF, 100 VC67

EMPTY10 K 5% 2/3W

12

R67

EMPTY

QUICK START GUIDE


WW



EPC9129

GU

5VHS

5VHS

5 V

GL

Gate Driver

U1L M5113TM

OUT

GU

GL

D1BAT54K FIL M

5 V

4.7 V

4.7 V

GL

20 Ω1

2R2

SDM03U40D3 Synchronous Boostrap Power Supply

1 μF, 10 VC1

D4CZRU52C5V1

Gbtst

27 K

12

R3

D2SDM03U40

22 nF, 25 VC3

GND

5 V

OUT

Vamp

OutGU

GL

Out

10 nF,100 V

10 nF,100 V

10 nF,100 V

C11 C12

Vamp

VampVampVAMP

GND

Hin

L in

Hin

L in

1

ProbeHole

PH1

Ground Post

1

.1" Male Vert.

GP 1

4.7 Ω1 2

R4

100 nF, 16 V

C2

100 nF, 16 VC4

100 nF , 16 VC5

22 pF, 50 VC6

22 pF, 50 VC7

100V 2800 mΩ

Q3EP C2038

C13

Vamp

Q1EPC8010

Q2EPC8010

1 μF 100 VC14

1 μF 100 VC15

Vamp Vamp

1 μF 100 VC16

1 μF 100 VC17

Vamp

Figure 15: EPC9512 - Gate driver and power devices schematic. This schematic is repeated for each single-ended ZVS class-D amplifier.

QUICK START GUIDE

17 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | W

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.EPC-CO.COM | COPYRIGHT 2018


EPC9129

40 V, 1AD80

40 V, 1AD82

40 V, 1AD81

40 V, 1AD83

10 μF, 50 VC85

Vrect

100 nF, 50 VC84

Vrect Vrect

RX Coil

SMD probe loop

1

TP 1

SMD probe loop

1

TP 2

Kelvin Output Current

1 TP4SMD probe loop

TP3SMD probe loop

1

Vunreg

DNP

CMP1

DNPCM1

DNPCM11

DNP

CM2

DNPCM12

DNP

CMP2

Kelvin Output VoltageL M1

82 nH

L M11

82 nH

CMP 3

CMP4

CM5EMPTY

EMPTY

EMPTY

EMPTY

EMPTY

EMPTY

EMPTY

EMPTY

CM6

CM7

CM8

4.7 K

12

R81

Vunreg

Receive Indicator Over-Voltage Indicator

422 Ω

12

R82

Vunreg

L ED 0603 GreenD84

L ED 0603 RedD86

Vout > 4 V Vout > 36 V

2.7 V, 250 mWD85

33 V, 250 mWD87

Coil2

Coil1

1 2

18 µH, 3.8 A

34

LE1

Isns

100 pFC52

12

JP50.1" Male Vert.

EMPTY

Regulator Disable

FA/SD

Vout

5 V 5 VGD

5VGD

GLPH

GLPH

GLPL

GLPLGate Driver 2.2 mΩ1 2

R90

SW

GND

PreDR PWM

62 K 1%

12

R52

124 K 1%

12

R51

6 V

220 pF, 50 VC53

Ground Post

10 μF, 50 V

10 μF, 50 V 10 μF, 50 V

10 μF, 50 VC62C61

22μF, 35 VC64

0 Ω1 2

R54

100 V, 3 A

D60STPS3H100UF

Vfdbk

Isns

C636

2

3 EP

45

LDO VREF

VSS

1 VDD

U90UCC27611DRV

Isns

Isns

Isns

Isns

10 μH, 150 mAL 90

IsnsComp

100 nF, 100 VC50

10 Ω1 2R50

1

GP 60

1

ProbeHolePH6020 Ω

1 2R92

100 nF, 16 VC91

22 pF, 50 VC92

5VGD

5 VGD

200 V, 9 A, 43 mΩ

Q60 EPC2019

1µF, 25 VC55

1m 1%

12

R57

150 K 1%

12

R58UVLO

75

BiasOsc

4

8

Pgnd

1.275 V

Cnt

FA/Sync/SD

FB

Comp

10

6

Agnd

Isens

Vin

3

1

DR

2

9

UVLOU50

LM3481MM/NOPB

Overvoltage Protection

35 V, 8.3 AD88

SMAJ30A

12

J1.156" Male Vert.

DNP

CZRU52C5V1D90

EMPTY

Vfdbk

100 pF, 25 VC44

Vout

Output Voltage Set

6.04 K

12

R41

17.8 K

1 2R40

30 V, 500 mA

D51

STP S0530Z

23.2 K

12

R55

22 nF, 50 V

C54

Vfdbk

DFLS1200

D67EMPTY

EMPTY

EMPTY

10 nF, 100 VC67

EMPTY10 K 5%, 2/3 W

12

R67

Vrect

Vunreg Vunreg

Vunreg

Vunreg

Vunreg

Vout

5 V

Snubber

22 μH, 4.3 A

L 61

12 Ω

12

R53

4.7 µF, 6.3 VC51

22 μH, 4.3 AL 60

C6522μF, 35 VC66

Vout Vout

C68

100 nF, 16 VC56

6 V

6 V

100 nF, 16 VC57

12

40 mΩ, 0.4 WmR60

1 μF, 25 VC90

1 2

75 mΩ, 1 WR80

Set to 280 kHz

Disable = 5 VEnable = 10 V

1234

.1" Male Vert.

J2VunregVunreg

1234

.1" Male Vert.

.1" Male Vert.

J3Vout

C72C71

Vunreg Vunreg

10 μF, 50 V 10 μF, 50 V

22μF, 35 V

Figure 16: EPC9513 schematic

QUICK START GUIDE


WW



EPC9129Figure 17: EPC9514 schematic.

60 V 1 AD80

PD3S160-7

10 µF 50 VC85

Vrect

100 nF, 50 VC84

Vrect Vrect

R X C oil

SM D probe loop

1

TP1

SM D probe loop

1

TP2

K elvin Output C urrent

SM D probe loop 1TP3SM D probe loop1 TP4

Vunreg

DNP

CMP1

390 pFCM1

DNPCM2

DNPCM12

DNP

CMP2

K elvin Output VoltageL M1

82nH

L M11

82 nH

4.7 k

12

R 81

Vunreg

422 Ω

12

R 82

Vunreg

L E D 0603 GreenD84

L E D 0603 R edD86

2.7 V 250 mW

D85

Coil2

Coil1

1 2

25 µH 5.3 A

34

L E 1

I sns

.05" 2 pos Male Vert

12

JP50

E MPT Y

R egulator Disable

FA/SD

Vout

5 V 5V GD

5V GD

GL PHGL PL

Gate Dri ver 2.2 Ω1 2

R 90

GL PLGL PH

SW

GND

PreDR PWM

124 k 1%

12

R 51

6 V

220 pF, 50 VC53

Ground Post

10 µF, 50 VC62

10 µF, 50 VC61

22 µF 35 VC64

V fdbk

I sns

10 µF50 V

C636

2

3 E P

45

LDO VREF

VSS

1 VDD

U90UCC27611DRV

I sns

I sns

I sns

I sns

10 µH 150 mAL 90

I snsComp

100 nF, 100 VC50

10E1 2R 50

1

.1" M ale Vert.GP60

1

ProbeHolePH6020 Ω

1 2R 92

100 nF, 16 VC91

22 pF, 50 VC92

5V GD

5V GD

1 µF, 25 VC55

2.49 M 1%

12

R 57

150 k 1%

12

R 58UV LO

75

BiasOsc

4

8

Pgnd

1.275 V

Cnt

FA/Sync/SD

FB

Comp

10

6

Agnd

Isens

Vin

3

1

DR

2

9

UVLOU50

L M3481MM/NOPB

44 V, 51.6 AD88

SM DJ36A

CZR U52C5V 1D90

E MPT Y

V fdbk

100 pF, 25 VC44

Vout

Output Voltage Set

6.04 k

12

R 41

30 V 500 mA

D51

ST PS0530Z

12

R 55E MPT Y

C54E MPT Y

V fdbk

200 V, 1 A

D67DFL S1200

10 nF, 200 VC67

10 k 5% 2/3 W

12

R 67

Vrect

Vunreg Vunreg

Vunreg

Vunreg

Vunreg

Vout

5 V

Snubber

22 µH 4.3 A

L 61

22 µH 4.3 AL 60 22 µF 35 V

C6522 µF 35 VC66

Vout Vout

10 µF 50 VC68

100 nF, 16 VC56

6V

6 V

100 nF, 16 VC57

1 µF, 25 VC90

1 2

75 mΩ 1WR 80

Set to 300 kHz

Disable = 12.5 VE nable = 25 V

VunregVunreg

1234

.1" M ale Vert.

J3Vout

10 µF, 50 VC72

10 µF, 50 VC71

Vunreg Vunreg

C52E MPT Y

56.2 k 1%

12

R 52

300 Ω 1 2

R 54

84.5 k 1%

1 2R 40

2.32 k

12

R 53

100 nF, 16 VC51

set to 19 V

100 V 5 A

D60PDS5100-13

100 V 5 A

D61E MPT Y

12

22 mΩ 0.4 WR 60

43 V 250 mW

D87

60 V 1 AD82

PD3S160-7

60 V 1AD81

PD3S160-760 V 1AD83

PD3S160-7

+ C7010 µF, 50 V

Vunreg

390 pFCM11

100 V 11 A 16 mΩ

Q60E PC2016C

Cat 6 C oilCoil

NC20-T025L01E-152-115-0R 75

1234

.1" M ale Vert.J2

Receive IndicatorVout > 4 V

Over-Voltage IndicatorVout > 46 V

Overvoltage Protection

QUICK START GUIDE



Logos and trademarks belong to the respective owner. AirFuel™ logo used with permission.

Note that this demonstration kit is not compliant with any wireless power standard. It can be used to evaluate wireless power transfer according to the standards and is meant as a tool to evaluate eGaN® FETs and eGaN® ICs in this application.

EPC would like to acknowledge Würth Elektronik (www.we-online.com) for their support of this project.

Würth Elektronik is a premier manufacturer of electronic and electromechanical passive components. EPC has partnered up with WE for a variety of passive component requirements due to the performance, quality and range of products available. EPC9129 system features various Würth Elektronik product lines including capacitors, LEDs and connectors.

Learn more at www.we-online.com.

EPC would like to acknowledge Johanson Technology (www.johansontechnology.com) for their support of this project. Information on the capacitors used in this kit can be found at http://www.johansontechnology.com/S42E.

EPC would like to acknowledge NuCurrent (www.NuCurrent.com) for their support of this project.

NuCurrent is a leading developer of high-efficiency antennas for wireless power applications. Compliant across AirFuel Alliance and Wireless Power Consortium (Qi) standards, NuCurrent works closely with electronic device OEMs and integrators to custom-design, rapid-prototype and integrate the optimal antenna for a broad range of applications. NuCurrent’s patented designs, structures and manufacturing techniques mitigate typical high frequency effects, offering higher efficiency, smaller sizes, higher durability and lower cost with wireless power application development.

For more information, visit http://nucurrent.com

Figure 18: Class 4 source board schematic.

SMA PCB Edge

J1

Coil tuning

C27.5 pF 1111

Ctrombone

Adjust on trombone

Ampli�er Connection

220 pF 1111

220 pF 1111C3

DNPC1

PCB1TX Coil

http://www.we-online.com/web/en/wuerth_elektronik/start.php

http://www.johansontechnology.com/S42E

http://www.NuCurrent.com

http://www.nucurrent.com/

EPC Products are distributed through Digi-Key.www.digikey.com

For More Information:

Please contact [email protected] your local sales representative

Visit our website: www.epc-co.com

Sign-up to receive EPC updates atbit.ly/EPCupdates or text “EPC” to 22828

Demonstration Board Warning and DisclaimerThe EPC9129 board is intended for product evaluation purposes only and is not intended for commercial use. Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions.

This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk.

As an evaluation tool, this board is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion Corporation (EPC) makes no guarantee that the purchased board is 100% RoHS compliant.

The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this Quick Start Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved.

Disclaimer: EPC reserves the right at any time, without notice, to make changes to any products described herein to improve reliability, function, or design. EPC does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, or other intellectual property whatsoever, nor the rights of others.

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demonstration system epc9129 quick start guide · 2018-05-31 · quick start guide 6.78 mhz, 33 w...

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