3.3a charger interface, wide input sensorless …...up9616-ds-c3000, mar. 2016 1 oerder number...

Conceptual uP9616

1uP9616-DS-C3000, Mar. 2016www.upi-semi.com

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3.3A Charger Interface, Wide Input Sensorless CC/CVSynchronous-Rectified Buck Converter

for QC2.0/QC3.0/PE+1.1/PE+2.0 And FCP

General Description

Ordering Information

FeaturesThe uP9616 is a high-efficiency synchronous-rectified buckconverter with an internal power switch. With internal lowRDS(ON) switches, the high-efficiency buck converter iscapable of delivering up to 3.3A output current for chargerinterface and a wide input voltage range from 8V to 32V. Itoperates in either CV (Constant Output Voltage) mode orCC (Constant Output Current) mode and provides a currentlimitation function. The uP9616 has a constant outputvoltage 5.1V/9.2V/12.1V for Quick Charge (QC2.0/QC3.0)that is detected from D+ and D- line and automaticallydetects whether a connected Powered Device (PD) isQuick Charge (QC2.0/QC3.0) capable before enablingoutput voltage adjustment. If a PD not compliant to QuickCharge (QC2.0/QC3.0) is detected, the uP9616 disablesoutput voltage adjustment to ensure safe operation withlegacy 5.1V only USB PDs.uP9616 is a USB secondary side fast-charging converter,supporting Qualcomm Quick Charge 3.0 (QC 3.0) HighVoltage Dedicated Charging Port (HVDCP) Class Aspecification.uP9616 allows for selection of the output voltage of an AC/DC USB adapter based on commands from the PortableDevice (PD) being powered. Selecting a higher chargingvoltage will reduce the charging current for a given powerlevel resulting in reduced IR drops and increased systemefficiency. Another advantage of QC3.0 is a decreasedbattery charging time and a reduced PD system cost thanksto the ability to select an optimum charging voltage. Thiseliminates the need for costly DC/DC converters within thePD. The USB-bus voltage can be controlled in discreetsteps from 3.6 V up to 12 V. The output current is limitednot to exceed maximum allowable power level.Other features for the buck converter include internal soft-start, adjustable external CC (Constant Output Current)limit setting, built-in fixed line-compensation, short circuitprotection, VIN/VOUT over voltage protection, and overtemperature protection. It is available in space savingVDFN6x5-8L and VDFN5x6-10L packages.

Wide Input Voltage Range : 8V to 32V

Input Voltage Absolute Maximum Rating: 36V

Up to 3.3A Output Current

CV/CC Mode Control (Constant Voltage andConstant Current)

Automatic Selection of D+/D- Mode for anAttached Device

Apple Mode: D+/D- Divider Mode 2.7V and 2.7V

Short Mode:

BC 1.2DCP Mode

Internal QC2.0/QC3.0/PE+1.1/PE+2.0 and FCP

Output Constant Voltage: 5.1V/9.2V/12.1V

Output Voltage Accuracy: +1.5%

Fixed 125kHz Frequency Operation

Up to 95% Conversion Efficiency

Internal Soft Start: 10ms

Fixed Cable Compensation Voltage

Adjustable External CC (Constant OutputCurrent) Limit Setting: Default = 3.3A

CC (Constant Output Current) Limit Accurarcy:+3%

Short Circuit Protection

VIN/VOUT Over Voltage Protection and OverTemperature Protections

VDFN6x5-8L and VDFN5x6-10L Packages

RoHS Compliant and Halogen Free

Note:(1) Please check the sample/production availability withuPI representatives.(2) uPI products are compatible with the current IPC/JEDECJ-STD-020 requirement. They are halogen-free, RoHScompliant and 100% matte tin (Sn) plating that are suitablefor use in SnPb or Pb-free soldering processes.

PDA Like Device Car Chargers

Portable Charging Devices

Applications

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Conceptual uP9616

2 uP9616-DS-C3000, Mar. 2016www.upi-semi.com

BOOT

SENSE+

SENSE-

VIN=8V~32V

VOUT

=5.1V,9.2V,12.1V

VINL1

22uH

GND LX

C3

0.1uFRSENSE

39m ohm

C5

0.1uF/16V

C2

1uF/50VC1

100uF/50V

D-

D+

USB/FCP

C422uFx2/16V

C6

3.3nF

R1

3.3 ohm

Typical Application Circuit

BOOT

SENSE+

SENSE-

VIN=8V~32V

VOUT

=5.1V,9.2V,12.1V

VINL1

22uH

GND LX

C3

0.1uFRSENSE

39m ohm

C5

0.1uF/16V

C2

1uF/50VC1

100uF/50V

D-

D+USB/FCP/QC

2.0 and 3.0

C422uFx2/16V

C6

3.3nF

R1

3.3 ohm

CC2

CC1USB Type C

Detect

Pin Configuration

LX

BOOT

SENSE+D+

VIN

VDFN6x5-8L

D- SENSE-

1

2

3

4 5

6

7

8

GND

VIN

LXLX

BO

OT

CC

1

SE

NS

E+

D+

CC

2

VIN

VDFN5x6-10L

GN

D

D-

SE

NS

E-

1 2 3 4 5678910

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Conceptual uP9616


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Functional Pin Description

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Conceptual uP9616


Functional Block Diagram

Control &Protection Logic

UG Driver

Current Sense

GND

VIN

LX

BOOT

InternalRegulator

VAVCC

VA

UVP

VREF

OTP OTP

EN

PORPOR

SENSE+

SENSE-

D+ D-

Current Sense/CC (Constant Output Current) Limit Amplifier

Line/Cable Compensation

Set Current Limit

OVP

FB

COMP_CC

COMP_CV

LG Driver

VCC

Diff Amplifier

X1

VREF_CC

VREF_OVP

VREF_UVP

VREF_CV

EN Logic

BC1.2/QC2.0/ QC3.0/FCP

USB TYPE CPE+1.1/PE+2.0

CC1

CC2

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Conceptual uP9616


0

50

100

150

200

0 500 1000 1500 2000 2500 3000

RCOMP = 60mV/A (Fixed)

ILOAD

(mA)

Current Limit Protection

The uP9613 continuously monitors the inductor current,when the inductor current is higher than current limitthreshold, the current limit function activates and forcesthe upper switch turning off to limit inductor current cycleby cycle.

Output Short Circuit Protection

The uP9613 provides output short circuit protection func-tion. Once the output loader short-circuits, the SCP willbe triggered then always hiccup, the hiccup cycle time isset by an internal counter. When the SCP condition isremoved or disappears, the converter will resume normaloperation and the hiccup status will terminate.

Output Over Voltage Protection

The uP9613 provides output over voltage protection. Oncethe output voltage (measured the at SENSE- pin) gets higherthan OVP threshold, the OVP will be triggered to shut downthe converter. When the OVP condition disappears, theconverter will resume normal operation and resume thenormal state automatically.

Over Temperature Protection

The OTP is triggered and shuts down the uP9613 if thejunction temperature is higher than 150oC The OTP is anon-latch type protection. The uP9613 automaticallyinitiates another soft start cycle if the junction temperaturedrops below 130oC.

Functional DescriptionCV/CC Mode Control

The uP9613 provides CV/CC function. It operates in eitherCV (Constant Output Voltage) mode or CC (Constant OutputCurrent) mode. The function provides a current limitationfunction and adjusts external current limit setting(Default=3.3A). In the CV mode, the output voltage iscontrolled within +1.5%. In the CC mode, the output currentvariation is less than +3% of the nominal value which canbe set up to 3.3A by the current sensing resistor.When Output current increase until it reaches the CC limitset by the R

SENSE resistor. At this point, the device will

transition from regulating output voltage to regulating outputcurrent, and the output voltage will drop with increasingload.

The CC (Constant Output Current) limit is set at 3.3A bydefault with an external resistance R

SENSE = 39mΩ, When

the (SENSE1+) - (SENSE1-) voltage gets higher than130mV and reaches the current limit, the driver is turnedoff. The CC (Constant Output Current) limit is set accordingto the following equation:

CC (Constant Output Current) Limit SENSER

mV 130=

Output Cable Resistance Compensation

In charger applications, the large load will cause voltagedrop in the output cable. The uP9613 has a built-in cablecompensation function. When the load increases, thecable compensator will increase an adjustable regulationof the error amplifier that can make the output voltageconstant. Use the curve and table to adjust internal thereference voltage values for fixed USB cable compensationby outside resistance R

SENSE = 39mΩ (default), as shown in

Figure 1 and Table 1.The fixed cable compensation iscalculated as follows:

COMPLOADCOMP RIV x =

R PMOC m( Ω) 06

I DAOL )Am(egatloVnoitasnepmoCelbaCBSUdexiF

)Vm(

0 0

005 0

0001 06

0051 09

0002 021

0052 051

0003 081

Table 1 USB Cable Compensation Application Table

VC

OM

P (m

V)

Figure 1 USB Cable Compensation ata Fixed Resistor Divider Value

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Conceptual uP9616


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Functional DescriptionHigh Voltage Dedicated Charging Port (HVDCP) Mode

After power-up pins D+ and D- of uP9616 are shorted withimpedance R

DCP_DAT and internal reference voltage V

REF is

set to VBUS

voltage 5.1V. The device is in a BC1.2 compatiblemode. If a portable device compatible with the QualcommQuick Charge specification is connected, a negotiationbetween HVDCP and PD is executed. Once the negotiationis successful the uP9616 opens D+ and D- short connectionand D- is pulled down with a R

DM_DWN. The uP9616 enters

HVDCP mode. It monitors D+ and D- inputs. Based on thespecified control patterns, the internal voltage referencevalue V

REF is adjusted in order to increase or decrease output

voltage to the required value.

The uP9616 is available in Class A version. Class A allowsto change the output voltage up to VBUS = 12.1V. If theunplug event is detected the decoder circuitry turns-on aninternal current sink, which discharges the output capacitorsto a safe voltage level. If the uP9616 is set to a Continuousmode it responds to the PD requests in a Single requestmode. It does not support Group request mode.

HVDCP Continuous ModeThe continuous mode of operation leverages the previouslyunused state in QC2.0. If the portable devices try and utilizethis mode, it applies voltages on D+ and D- per Table 2.Assuming the HVDCP supports this mode of operation, itwill glitch filter the request as it currently does, usingTGLITCH_V_CHANGE(40ms). Before the portable devicecan begin to increment or decrement the voltage, it mustwait TV_NEW_REQUEST_CONT before pulling D+ and D-high or low. Once this time has finished, the portable devicenow attempts to increment or decrement the voltage. Toincrement, the portable device sends a pulse of widthTACTIVE by pulling D+ to VDP_UP and then must returnD+ to VDP_SRC for TINACTIVE.

Table2. HVDCP detection voltage coding and status

Note: GND is not forced by the portable device. The portabledevice shall go High-Z and the HVDCP pulls D- low throughRdm_dwn. This is to prevent misdetection when currentflowing through GND causes the GND in the portable deviceto be at a higher voltage relative to HVDCP GND. Careshould be taken in the portable device as this can result ina negative relative voltage on D- as seen by the portabledevice.

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Conceptual uP9616


(Note 1)

Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------------------- -0.3V to +36V

SW Voltage to GND ------------------------------------------------------------------------------------------------------- -0.3V to + (VIN + -0.3V)

D+/D-/CC1/CC2 Pin Voltage -------------------------------------------------------------------------------------------------------------- -0.3V to +6.0V

SENSE+/SENSE- Pin Voltage ---------------------------------------------------------------------------------------------------------- -0.3V to +14V

Storage Temperature Range ------------------------------------------------------------------------------------------------------------- -65oC to +150oC

Junction Temperature ------------------------------------------------------------------------------------------------------------------------------------ 150oC

Lead Temperature (Soldering, 10 sec) ------------------------------------------------------------------------------------------------------------ 260oC

ESD Rating (Note 2)

D+/D-/Sense- Pin

HBM (Human Body Mode) --------------------------------------------------------------------------------------------------------------------- 4kV

MM (Machine Mode) ----------------------------------------------------------------------------------------------------------------------------- 400V

Other Pins

HBM (Human Body Mode) --------------------------------------------------------------------------------------------------------------------- 2kV

MM (Machine Mode) ----------------------------------------------------------------------------------------------------------------------------- 200V

(Note 4)

Operating Junction Temperature Range ------------------------------------------------------------------------------------------ -40oC to +125oC

Operating Ambient Temperature Range ------------------------------------------------------------------------------------------ -40oC to +85oC

Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------------------------- +8V to 32V

Absolute Maximum Rating

Thermal Information

Recommended Operation Conditions

Package Thermal Resistance (Note 3)

VDFN6x5 - 8L θJA

-------------------------------------------------------------------------------------------------------------------- 45oC/W

VDFN6x5 - 8L θJC

------------------------------------------------------------------------------------------------------------------------- 4oC/W

VDFN5x6 - 10L θJA

-------------------------------------------------------------------------------------------------------------------- 45oC/W

VDFN5x6 - 10L θJC ------------------------------------------------------------------------------------------------------------------------ 4oC/W

Power Dissipation, PD @ T

A = 25oC

VDFN6x5 - 8L --------------------------------------------------------------------------------------------------------------------------------------- 2.2W

VDFN5x6 - 10L ------------------------------------------------------------------------------------------------------------------------------------- 2.2W

Note 1. Stresses listed as the above Absolute Maximum Ratings may cause permanent damage to the device.These are for stress ratings. Functional operation of the device at these or any other conditions beyond thoseindicated in the operational sections of the specifications is not implied. Exposure to absolute maximumrating conditions for extended periods may remain possibility to affect device reliability.

Note 2. Devices are ESD sensitive. Handling precaution recommended.

Note 3. θJA

is measured in the natural convection at TA = 25oC on a low effective thermal conductivity test board of

JEDEC 51-3 thermal measurement standard.

Note 4. The device is not guaranteed to function outside its operating conditions.

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Conceptual uP9616


(VIN = 12V, TA =25oC, unless otherwise specified)

Electrical Characteristics

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-- 01 -- %

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siseretsyHnwodtuhSlamrehT T SYHDS -- 02 -- oC

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Conceptual uP9616


Electrical Characteristics

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Conceptual uP9616


Typical Operation Characteristics

This page is intentionally left blank and will be updated when data is available.

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Conceptual uP9616


Application Information

Output Inductor Selection

Output inductor selection is usually based on theconsiderations of inductance, rated current value, sizerequirements and DC resistance (DCR).

The inductance is chosen based on the desired ripplecurrent. Large value inductors result in lower ripple currentsand small value inductors result in higher ripple currents.Higher VIN or VOUT also increases the ripple current asshown in the equation below. A reasonable starting pointfor setting ripple current is ∆IL = 900mA (30% of 3000mA).

)V

V1(V

Lf1

IIN

OUTOUT

OUTOSCL −×

×=∆

Maximum current ratings of the inductor are generallyspecified in two methods: permissible DC current andsaturation current. Permissible DC current is the allowableDC current that causes 40oC temperature raise. Thesaturation current is the allowable current that causes 10%inductance loss. Make sure that the inductor will notsaturate over the operation conditions including temperaturerange, input voltage range, and maximum output current. Ifpossible, choose an inductor with rated current higher than5A so that it will not saturate even under current limitcondition.

The size requirements refer to the area and heightrequirement for a particular design. For better efficiency,choose a low DC resistance inductor. DCR is usuallyinversely proportional to size.

Different core materials and shapes will change the size,current and price/current relationship of an inductor. Toroidor shielded pot cores in ferrite or permalloy materials aresmall and don’t radiate much energy, but generally costmore than powdered iron core inductors with similar electricalcharacteristics. The choice of which style inductor to useoften depends on the price vs. size requirements and anyradiated field/EMI requirements.

Input Capacitor Selection

The input capacitor needs to be carefully selected tomaintain sufficiently low ripple at the supply input of theconverter. A low ESR capacitor is highly recommended.Since large current flows in and out of this capacitor duringswitching, its ESR also affects efficiency.

The input capacitance needs to be higher than 22uF. Thebest choice is he ceramic type and low ESR electrolytictypes may also be used provided that the RMS ripplecurrent rating is higher than 50% of the output current. Inthe case of the electrolytic types, they can be further awayif a small parallel 1uF ceramic capacitor is placed rightclose to the IC. A 100uF elecrolytic capacitor and 1uFceramic capacitor are recommended and placed close toVIN and GND pins, with the shortest traces possible.

Output Capacitor Selection

The ESR of the output capacitor determines the outputripple voltage and the initial voltage drop following a highslew rate load transient edge. The output ripple voltagecan be calculated as:

)Cf8

1ESR(IV

TOUOSCCOUT ××

+×∆=∆

Where fOSC

= operating frequency, COUT

= outputcapacitance and ∆IC = ∆IL = ripple current in the inductor.The ceramic capacitor with low ESR value provides the lowoutput ripple and low size profile.In the case of electrolytic capacitors, the ripple is dominatedby RESR multiplied by the ripple current. Connect a 220uFelectrolytic capacitor at output SENSE+ terminal for goodperformance and low output ripple and place outputcapacitor5s as close as possible to the device.In the case of ceramic output capacitors, RESR is very smalland does not contribute to the output ripple. Connect a0.1uF ceramic capacitor at output SENSE- terminal for goodperformance and place output capacitors as close aspossible to the device.

PCB Layout Consideration

The PCB layout is an important step to maintain the highperformance of the uP9613. High switching frequenciesand relatively large peak currents make the PCB layout avery important part of all high frequency switching powersupply design. Both the high current and the fast switchingnodes demand full attention to the PCB layout to save therobustness of the uP9613 through the PCB layout.Improper layout might show the symptoms of poor load orlineregulation, radiate excessive noise at ground or input,output voltage shifts, stability issues, unsatisfying EMIbehavior or worsened efficiency. Follow the PCB layoutguidelines for optiomal performances of uP9613.

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Conceptual uP9616


Package Information

Note1.Package Outline Unit Description:

BSC: Basic. Represents theoretical exact dimension or dimension targetMIN: Minimum dimension specified.MAX: Maximum dimension specified.REF: Reference. Represents dimension for reference use only. This value is not a device specification.TYP. Typical. Provided as a general value. This value is not a device specification.

2.Dimensions in Millimeters.3.Drawing not to scale.4.These dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15mm.

VDFN6x5 - 8L

θ

14

5 8

0.80

- 1.

000.31 - 0.511.27 BSC

6.00

BSC

5.00 BSC

3.85

- 4.

40

0.50 - 0.803.25 - 3.80

0.20 REF 0.00 - 0.05

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Conceptual uP9616


0.50 - 0.90

0.80

- 1.

00

0.31 - 0.516.00 BSC

5.00

BSC

2.60

- 2.

80

4.40 - 4.60

0.00 - 0.050.20 REF

5 1

1.20BSC

106

Note1.Package Outline Unit Description:

BSC: Basic. Represents theoretical exact dimension or dimension targetMIN: Minimum dimension specified.MAX: Maximum dimension specified.REF: Reference. Represents dimension for reference use only. This value is not a device specification.TYP. Typical. Provided as a general value. This value is not a device specification.

2.Dimensions in Millimeters.3.Drawing not to scale.4.These dimensions do not include mold flash or protrusions. Mold flash or protrusions shall not exceed 0.15mm.

Package InformationVDFN5x6 - 10L

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Conceptual uP9616


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3.3a charger interface, wide input sensorless …...up9616-ds-c3000, mar. 2016 1 oerder number...

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