tda8929t controller class-d audio amplifier sheets/nxp pdfs...data sheet preliminary specification...
TRANSCRIPT
DATA SHEET
Preliminary specificationFile under Integrated Circuits, IC01
2001 Dec 11
INTEGRATED CIRCUITS
TDA8929TController class-D audio amplifier
2001 Dec 11 2
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
CONTENTS
1 FEATURES
2 APPLICATIONS
3 GENERAL DESCRIPTION
4 ORDERING INFORMATION
5 QUICK REFERENCE DATA
6 BLOCK DIAGRAM
7 PINNING
8 FUNCTIONAL DESCRIPTION
8.1 Controller8.2 Pulse width modulation frequency8.3 Protections8.3.1 Diagnostic temperature8.3.2 Diagnostic current8.3.3 Start-up safety test8.4 Differential audio inputs
9 LIMITING VALUES
10 THERMAL CHARACTERISTICS
11 QUALITY SPECIFICATION
12 DC CHARACTERISTICS
13 AC CHARACTERISTICS
14 SWITCHING CHARACTERISTICS
14.1 Minimum pulse width
15 TEST AND APPLICATION INFORMATION
15.1 Test circuit15.2 BTL application15.3 Mode pin15.4 External clock15.5 Reference designs15.6 Reference design bill of material15.7 Curves measured in reference design
16 PACKAGE OUTLINE
17 SOLDERING
17.1 Introduction to soldering surface mountpackages
17.2 Reflow soldering17.3 Wave soldering17.4 Manual soldering17.5 Suitability of surface mount IC packages for
wave and reflow soldering methods
18 DATA SHEET STATUS
19 DEFINITIONS
20 DISCLAIMERS
2001 Dec 11 3
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
1 FEATURES
• Operating voltage from ±15 to ±30 V
• Very low quiescent current
• Low distortion
• Fixed gain of 30 dB Single-Ended (SE) or 36 dBBridge-Tied Load (BTL)
• Good ripple rejection
• Internal switching frequency can be overruled by anexternal clock
• No switch-on or switch-off plop noise
• Diagnostic input for short-circuit and temperatureprotection
• Usable as a stereo Single-Ended (SE) amplifier or as amono amplifier in Bridge-Tied Load (BTL)
• Start-up safety test, to protect for short-circuits at theoutput of the power stage to supply lines
• Electrostatic discharge protection (pin to pin).
2 APPLICATIONS
• Television sets
• Home-sound sets
• Multimedia systems
• All mains fed audio systems
• Car audio (boosters).
3 GENERAL DESCRIPTION
The TDA8929T is the controller of a two-chip set for a highefficiency class-D audio power amplifier system. Thesystem is divided into two chips:
• TDA8929T; the analog controller chip in a SO24package
• TDA8926J/ST/TH or TDA8927J/ST/TH; a digital powerstage in a DBS17P, RDBS17P or HSOP24 powerpackage.
With this chip set a compact 2 × 50 W or 2 × 100 W audioamplifier system can be built, operating with high efficiencyand very low dissipation. No heatsink is required, ordepending on supply voltage and load, a very small one.The system operates over a wide supply voltage rangefrom ±15 up to ±30 V and consumes a very low quiescentcurrent.
4 ORDERING INFORMATION
TYPE NUMBERPACKAGE
NAME DESCRIPTION VERSION
TDA8929T SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
2001 Dec 11 4
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
5 QUICK REFERENCE DATA
Note
1. VP = ±25 V.
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
General; note 1
VP supply voltage ±15 ±25 ±30 V
Iq(tot) total quiescent current − 20 30 mA
Stereo single-ended configuration
Gv(cl) closed-loop voltage gain 29 30 31 dB
Zi input impedance 45 68 − kΩVn(o) noise output voltage − 220 400 µV
SVRR supply voltage ripple rejection 40 50 − dB
αcs channel separation − 70 − dB
VOO DC output offset voltage − − 150 mV
Mono bridge-tied load configuration
Gv(cl) closed-loop voltage gain 35 36 37 dB
Zi input impedance 23 34 − kΩVn(o) noise output voltage − 280 − µV
SVRR supply voltage ripple rejection − 44 − dB
VOO DC output offset voltage − − 200 mV
2001 Dec 11 5
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
6 BLOCK DIAGRAM
handbook, full pagewidth
MGW148
STABILIZER
SGND
SGND
SGND
SGND
4
1 3
5
2
7
6
11
8
9
12 10
17
14
13
16
22
15
19
23
24
21
20Rfb
Rfb
mute
mute
mute
V/I
V/I
SGND
TDA8929TSGND
OSCILLATOR
WINDOWCOMPARATOR
WINDOWCOMPARATOR
MODE
MANAGER
18
VSS1
SGND1
VDD1
IN1−
IN1+
MODE
OSC
IN2+
IN2−
VDD2
SGND2
VSS2(sub)
SW1
REL1
DIAGCUR
EN1
STAB
VSSD
PWM1
PWM2
EN2
DIAGTMP
REL2
SW2
Fig.1 Block diagram.
2001 Dec 11 6
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
7 PINNING
SYMBOL PIN DESCRIPTION
VSS1 1 negative analog supply voltagechannel 1
SGND1 2 signal ground channel 1
VDD1 3 positive analog supply voltagechannel 1
IN1− 4 negative audio input channel 1
IN1+ 5 positive audio input channel 1
MODE 6 mode select input(standby/mute/operating)
OSC 7 oscillator frequency adjustment, ortracking input
IN2+ 8 positive audio input channel 2
IN2− 9 negative audio input channel 2
VDD2 10 positive analog supply voltagechannel 2
SGND2 11 signal ground channel 2
VSS2(sub) 12 negative analog supply voltagechannel 2 (substrate)
SW2 13 digital switch output channel 2
REL2 14 digital control input channel 2
DIAGTMP 15 digital input for temperature limiterror report from power stage
EN2 16 digital control output for enablechannel 2 of power stage
PWM2 17 input for feedback from PWMoutput power stage channel 2
VSSD 18 negative digital supply voltage;reference for digital interface topower stage
STAB 19 pin for a decoupling capacitor forinternal stabilizer
PWM1 20 input for feedback from PWMoutput power stage channel 1
EN1 21 digital control output for enablechannel 1 of power stage
DIAGCUR 22 digital input for current error reportfrom power stage
REL1 23 digital control input channel 1
SW1 24 digital switch output channel 1
handbook, halfpageVSS1
SGND1
VDD1
IN1−
IN1+
MODE
OSC
IN2+
IN2−
VDD2
SGND2
VSS2(sub)
SW1
REL1
DIAGCUR
EN1
STAB
VSSD
PWM1
PWM2
EN2
DIAGTMP
REL2
SW2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
TDA8929T
MGW149
Fig.2 Pin configuration.
2001 Dec 11 7
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
8 FUNCTIONAL DESCRIPTION
The combination of the TDA8926J and the TDA8929Tproduces a two-channel audio power amplifier systemusing the class-D technology (see Fig.4).
In the TDA8929T controller device the analog audio inputsignal is converted into a digital Pulse Width Modulation(PWM) signal. The digital power stage (TDA8926) is usedfor driving the low-pass filter and the loudspeaker load. Itperforms a level shift from the low-power digitalPWM signal, at logic levels, to a high-power PWM signalthat switches between the main supply lines.A second-order low-pass filter converts the PWM signalinto an analog audio signal across the loudspeaker.
For a description of the power stage see the specificationof the TDA8926.
The TDA8926 can be used for an output power of2 × 50 W. The TDA8927 should be used for a higheroutput power of 2 × 100 W.
8.1 Controller
The controller contains (for two audio channels) two PulseWidth Modulators (PWMs), two analog feedback loopsand two differential input stages. This chip also containscircuits common to both channels such as the oscillator, allreference sources, the mode functionality and a digitaltiming manager.
The pinning of the TDA8929T and the power stage devicesare designed to have very short and straight connectionsbetween the packages. For optimum performance theinterconnections between the packages must be as shortas possible.
Using this two-chip set an audio system with twoindependent amplifier channels with high output power,high efficiency (90%) for the system, low distortion and alow quiescent current is obtained. The amplifiers channelscan be connected in the following configurations:
• Mono Bridge-Tied Load (BTL) amplifier
• Stereo Single-Ended (SE) amplifier.
The amplifier system can be switched in three operatingmodes via the mode select pin:
• Standby: with a very low supply current
• Mute: the amplifiers are operational, but the audio signalat the output is suppressed
• On: amplifier fully operational with output signal.
For suppressing pop noise the amplifier will remainautomatically for approximately 220 ms in the mute modebefore switching to operating mode. In this time thecoupling capacitors at the input are fully charged.
Figure 3 shows an example of a switching circuit for drivingpin MODE.
MGW150
handbook, halfpage
R
R
MODE
SGND
mute/onstandby/mute
+5 V
Fig.3 Mode select switch circuitry.
2001D
ec11
8
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
hand
book
, ful
l pag
ewid
th
1
4IN1−PWM1
5IN1+
IN2+
IN2−
Vi(2)
Vi(1)
mute
mute
SGND
SGND
SGND1
SGND2
3
20
REL123
SW124
EN1
STAB
DIAGCUR
DIAGTMP
SW2
REL2
PWM2
21
22
19
15
13
EN2
REL1
SW1
EN1
SW2
REL2
EN216
14
17
6
11
8
9
7
2
Rfb
Rfb
INPUTSTAGE
INPUTSTAGE
TDA8929T
PWMMODULATOR
PWMMODULATOR
MODE
STABI
OSCILLATOR MANAGER
VSSA VDDA
VSS1 VDD1
12 10
VSSA VDDA
VSS2(sub) VSSDVDD2
VMODE
VSSA
MODE
OSCROSC
18
MGU387
CONTROLAND
HANDSHAKE
DRIVERHIGH
TDA8926J
DRIVERLOW
2
7
+25 V
−25 V
VSS1
VSS1
VSSA
VSS2
VSSD
VDDD
VDD2
VDDA
6
1
4
8 10
VDD2 VDD1
13 5
CONTROLAND
HANDSHAKE
DRIVERHIGH
DRIVERLOW
14
11
12
17
16
BOOT1
OUT1
OUT2
BOOT2
SGND(0 V)
STAB
POWERUP
DIAG
TEMPERATURE SENSORAND
CURRENT PROTECTION
9
3
15
Fig.4 Typical application schematic of the class-D system using TDA8929T and the TDA8926J.
2001 Dec 11 9
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
8.2 Pulse width modulation frequency
The output signal of the power stage is a PWM signal witha carrier frequency of approximately 300 kHz. Using asecond-order LC demodulation filter in the applicationresults in an analog audio signal across the loudspeaker.This switching frequency is fixed by an external resistorROSC connected between pin OSC and VSS. With theresistor value given in the application diagram, the carrierfrequency is typical 317 kHz. The carrier frequency can be
calculated using: [Hz]
If two or more class-D systems are used in the same audioapplication, it is advised to have all devices working at thesame switching frequency. This can be realized byconnecting all OSC pins together and feed them from anexternal oscillator. Using an external oscillator it isnecessary to force pin OSC to a DC-level above SGND forswitching from the internal to an external oscillator. In thiscase the internal oscillator is disabled and the PWM willswitch on the external frequency. The frequency range ofthe external oscillator must be in the range as specified inthe switching characteristics.
Application in a practical circuit:
• Internal oscillator: ROSC connected between pin OSCand VSS
• External oscillator: connect oscillator signal betweenpin OSC and pin SGND; delete ROSC.
8.3 Protections
The controller is provided with two diagnostic inputs. Oneor both pins can be connected to the diagnostic output ofone or more power stages.
8.3.1 DIAGNOSTIC TEMPERATURE
A LOW level on pin DIAGTMP will immediately force bothpins EN1 and EN2 to a LOW level. The power stage shutsdown and the temperature is expected to drop. Ifpin DIAGTMP goes HIGH, pins EN1 and EN2 willimmediately go HIGH and normal operation will bemaintained.
Temperature hysteresis, a delay before enabling thesystem again, is arranged in the power stage. Internallythere is a pull-up resistance to 5 V at the diagnostic inputof the controller. Because the diagnostic output of thepower stage is an open-drain output, diagnostic lines canbe connected together (wired-OR). It should be noted thatthe TDA8929T itself has no temperature protection.
8.3.2 DIAGNOSTIC CURRENT
This input is intended to protect against short-circuitsacross the loudspeaker load. In the event that the currentlimit in the power stage is exceeded, pin DIAGCUR mustbe pulled to a LOW level. A LOW level on the diagnosticcurrent input will immediately force the output pins EN1and EN2 to a LOW level. The power stage will shut downwithin less than 1 µs and the high current is switched off.In this state the dissipation is very low. Every 220 ms thecontroller will attempt to restart the system. If there is stilla short-circuit across the loudspeaker load, the system isswitched off again as soon as the maximum current isexceeded. The average dissipation will be low because ofthis low duty factor. The actual current limiting value is setby the power stage.
Depending on the type of power stage which is used,several values are possible:
• TDA8926TH: limit value can be externally adjusted witha resistor; maximum is 5 A
• TDA8927TH: limit value can be externally adjusted witha resistor; maximum is 7.5 A
• TDA8926J and TDA8926ST: limit value is fixed at 5 A
• TDA8927J and TDA8927ST: limit value is fixed at 7.5 A.
fosc9 109×ROSC
-------------------=
2001 Dec 11 10
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
8.3.3 START-UP SAFETY TEST
During the start-up sequence, when pin MODE is switchedfrom standby to mute, the condition at the output terminalsof the power stage are checked. These are the same linesas the feedback inputs of the controller. In the event of ashort-circuit of one of the output terminals to VDD or VSSthe start-up procedure is interrupted and the system waitsfor non-shorted outputs. Because the test is done beforeenabling the power stages, no large currents will flow in theevent of a short-circuit. This system protects againstshort-circuits at both sides of the output filter to both supplylines. When there is a short-circuit from the outputs of thepower stage to one of the supply lines, before thedemodulation filter, it will also be detected by the start-upsafety test. Practical use from this test feature can befound in detection of short-circuits on the printed-circuitboard.
Remark: this test is only operational prior to or during thestart-up sequence, and not during normal operating.
8.4 Differential audio inputs
For a high common mode rejection and a maximumflexibility of application, the audio inputs are fullydifferential. By connecting the inputs anti-parallel thephase of one of the channels is inverted, so that a load canbe connected between the two output filters. In this casethe system operates as a mono BTL amplifier (see Fig.5).
Also in the stereo single-ended configuration it isrecommended to connect the two differential inputs inanti-phase. This has advantages for the current handlingof the power supply at low signal frequencies.
handbook, full pagewidth
MGW185
TDA8929TREL1
SW1
EN1
EN2
SW2
OUT1
SGND
OUT2REL2
IN1+
Vi
IN1−
IN2+
IN2−
CONTROLLER
POWERSTAGE
Fig.5 Mono BTL application.
2001 Dec 11 11
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
9 LIMITING VALUESIn accordance with the Absolute Maximum Rate System (IEC 60134).
Notes
1. Human Body Model (HBM); Rs = 1500 Ω and C = 100 pF.
2. Machine Model (MM); Rs = 10 Ω; C = 200 pF and L = 0.75 µH.
10 THERMAL CHARACTERISTICS
11 QUALITY SPECIFICATION
In accordance with “SNW-FQ611-part D” if this device is used as an audio amplifier.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VP supply voltage − ±30 V
VMODE(sw) mode select switch voltage referenced to SGND 0 5.5 V
Tstg storage temperature −55 +150 °CTamb ambient temperature −40 +85 °CTvj virtual junction temperature − 150 °CVes(HBM) electrostatic discharge
voltage (HBM)note 1
all pins with respect to VDD (class A) −500 +500 V
all pins with respect to VSS (class A1) −1000 +1000 V
all pins with respect to GND (class B) −2500 +2500 V
all pins with respect to each other(class B)
−2000 +2000 V
Ves(MM) electrostatic dischargevoltage (MM)
note 2
all pins with respect to VDD (class A) −100 +100 V
all pins with respect to VSS (class B) −100 +100 V
all pins with respect to GND (class B) −300 +300 V
all pins with respect to each other(class B)
−200 +200 V
SYMBOL PARAMETER CONDITIONS VALUE UNIT
Rth(j-a) thermal resistance from junction to ambient in free air 65 K/W
2001 Dec 11 12
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
12 DC CHARACTERISTICSVP = ±25 V; Tamb = 25 °C; measured in Fig.10; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
VP supply voltage note 1 ±15 ±25 ±30 V
Iq(tot) total quiescent current − 20 30 mA
Istb standby current VMODE = 0 V − 30 100 µA
Offset
VOO output offset voltage in system on and mute − − 150 mV
∆VOO delta output offset voltage insystem
on ↔ mute − − 80 mV
Mode select input (pin MODE); see Figs 6, 7 and 8
VMODE input voltage note 2 0 − 5.5 V
IMODE input current VMODE = 5.5 V − − 1000 µA
Vth1+ positive threshold voltage 1 standby → mute;note 2
− 1.6 2.0 V
Vth1− negative threshold voltage 1 mute → standby;note 2
0.8 1.0 − V
VMODE(hys1) hysteresis voltage 1 (Vth1+) − (Vth1−) − 600 − mV
Vth2+ positive threshold voltage 2 mute → on;note 2
− 3.8 4.0 V
Vth2− negative threshold voltage 2 on → mute;note 2
3.0 3.2 − V
VMODE(hys2) hysteresis voltage 2 (Vth2+) − (Vth2−) − 600 − mV
Audio inputs (pins IN1+, IN1 −, IN2+ and IN2−)
VI DC input voltage note 2 − 0 − V
Internal stabilizer (pin STAB)
VO(STAB) stabilizer output voltage mute and on;note 3
11 13 15 V
ISTAB(max) maximum current on pin STAB mute and on 10 − − mA
Enable outputs (pins EN1 and EN2)
VOH HIGH-level output voltage referenced to VSS VSTAB − 1.6 VSTAB − 0.7 − V
VOL LOW-level output voltage referenced to VSS 0 − 0.8 V
Current diagnose input (pin DIAGCUR with internal pull-up resistance)
VIH HIGH-level input voltage no errors; note 3 − VSTAB − V
VIL LOW-level input voltage note 3 0 − 1.5 V
Rpu(int) internal pull-up resistance tointernal digital supply
− 12 − kΩ
Temperature diagnose input (pin DIAGTMP with internal pull-up resistance)
VIH HIGH-level input voltage no errors; note 3 4 5.5 V
VIL LOW-level input voltage note 3 0 − 1.5 V
2001 Dec 11 13
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
Notes
1. The circuit is DC adjusted at VP = ±15 to ±30 V.
2. Referenced to SGND (0 V).
3. Referenced to VSS.
13 AC CHARACTERISTICS
Rpu(int) internal pull-up resistance tointernal digital supply
− 12 − kΩ
Switch outputs (pins SW1 and SW2)
VOH HIGH-level output voltage note 3 VSTAB − 1.6 VSTAB − 0.7 − V
VOL LOW-level output voltage note 3 0 − 0.8 V
Control inputs (pins REL1 and REL2)
VIH HIGH-level input voltage note 3 10 − VSTAB V
VIL LOW-level input voltage note 3 0 − 2 V
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Stereo single-ended application; note 1
THD total harmonic distortion Po = 1 W; note 2
fi = 1 kHz − 0.01 0.05 %
fi = 10 kHz − 0.1 − %
Gv(cl) closed-loop voltage gain 29 30 31 dB
SVRR supply voltage ripple rejection on; fi = 100 Hz; note 3 − 55 − dB
on; fi = 1 kHz; note 3 40 50 − dB
mute; fi = 100 Hz; note 3 − 55 − dB
standby; fi = 100 Hz; note 3 − 80 − dB
Zi input impedance 45 68 − kΩVn(o) noise output voltage on; Rs = 0 Ω; B = 22 Hz to 22 kHz − 220 400 µV
on; Rs = 10 kΩ; B = 22 Hz to 22 kHz − 230 − µV
mute; note 4 − 220 − µV
αcs channel separation Po = 10 W; Rs = 0 Ω − 70 − dB
∆Gv channel unbalance − − 1 dB
Vo output signal mute; Vi = Vi(max) = 1 V (RMS) − − 400 µV
CMRR common mode rejection ratio Vi = 1 V (RMS) − 75 − dB
Mono BTL application; note 5
THD total harmonic distortion Po = 1 W; note 2
fi = 1 kHz − 0.01 0.05 %
fi = 10 kHz − 0.1 − %
Gv(cl) closed-loop voltage gain 35 36 37 dB
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
2001 Dec 11 14
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
Notes
1. VP = ±25 V; fi = 1 kHz; Tamb = 25 °C; measured in Fig.10; unless otherwise specified.
2. THD is measured in a bandwidth of 22 Hz to 22 kHz. When distortion is measured using a low-order low-pass filtera significantly higher value will be found, due to the switching frequency outside the audio band.
3. Vripple = Vripple(max) = 2 V (p-p); Rs = 0 Ω.
4. B = 22 Hz to 22 kHz and independent of Rs.
5. VP = ±25 V; fi = 1 kHz; Tamb = 25 °C; measured in reference design in Fig.12; unless otherwise specified.
SVRR supply voltage ripple rejection on; fi = 100 Hz; note 3 − 49 − dB
on; fi = 1 kHz; note 3 36 44 − dB
mute; fi = 100 Hz; note 3 − 49 − dB
standby; fi = 100 Hz; note 3 − 80 − dB
Zi input impedance 23 34 − kΩVn(o) noise output voltage on; Rs = 0 Ω; B = 22 Hz to 22 kHz − 280 500 µV
on; Rs = 10 kΩ; B = 22 Hz to 22 kHz − 300 − µV
mute; note 4 − 280 − µV
Vo output signal mute; Vi = Vi(max) = 1 V (RMS) − − 500 µV
CMRR common mode rejection ratio Vi = 1 V (RMS) − 75 − dB
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
handbook, full pagewidth
VMODE(hys1) VMODE(hys2)
VMODEVth1− Vth1+ Vth2− Vth2+
MGW334
standby
mute
on
Fig.6 Mode pin selection.
2001 Dec 11 15
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, full pagewidth
MGW152
on
mute
switching
audio
standby
>110 ms110 ms
0 V (SGND)
2 V
4 V
VMODE
VEN
VSTAB
VSS
Fig.7 Mode pin timing from standby to on via mute.
When switching from standby to mute there is a delay of 110 ms before the output starts switching. The audio signal isavailable after the mode pin has been set to on, but not earlier than 220 ms after switching to mute.
handbook, full pagewidth
MGW151
on
switching
audio
standby
110 ms 110 ms
0 V (SGND)
4 V
VMODE
VEN
VSTAB
VSS
Fig.8 Mode pin timing from standby to on.
When switching from standby to on there is a delay of 110 ms before the output starts switching.After a second delay of 110 ms the audio signal is available.
2001 Dec 11 16
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
14 SWITCHING CHARACTERISTICSVP = ±25 V; Tamb = 25 °C; measured in Fig.10; unless otherwise specified.
Notes
1. Frequency set with ROSC, according to the formula in the functional description.
2. For tracking the external oscillator has to switch around SGND + 2.5 V with a minimum voltage of VOSC(ext).
14.1 Minimum pulse width
The minimum obtainable pulse width of the PWM output signal of a class-D system, sets the maximum output voltageswing after the demodulation filter and also the maximum output power. Delays in the power stages are the main causefor the minimum pulse width being not equal to zero. The TDA8926 and TDA8927 power stages have a minimum pulsewidth of tW(min) = 220 ns (typical). Using the TDA8929T controller, the effective minimum pulse is reduced by a factor oftwo during clipping. For the calculation of the maximum output power at clipping the effective minimum pulse width duringclipping is 0.5tW(min).
For the practical useable minimum and maximum duty factor (δ) which determines the maximum output power:
× 100% < δ < × 100%
Using the typical values of the TDA8926 and TDA8927 power stages:
3.5% < δ < 96.5%.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Switching frequency
fosc oscillator frequency ROSC = 30.0 kΩ 309 317 329 kHz
ROSC = 27 kΩ;see Fig.12
− 360 − kHz
fosc(r) oscillator frequency range note 1 210 − 600 kHz
VOSC maximum voltage at pin OSC frequency tracking − − SGND + 12 V
VOSC(trip) trip level at pin OSC for tracking frequency tracking − SGND + 2.5 − V
ftrack frequency range for tracking frequency tracking 200 − 600 kHz
VOSC(ext) voltage at pin OSC for tracking note 2 − 5 − V
tW(min) fosc×2
------------------------------- 1tW(min) fosc×
2-------------------------------–
2001 Dec 11 17
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
15 TEST AND APPLICATION INFORMATION
15.1 Test circuit
The test diagram in Fig.10 can be used for stand alonetesting of the controller. Audio and mode input pins areconfigured as in the application. For the simulation of aswitching output power stage a simple level shifter can beused. It converts the digital PWM signal from the controller(switching between VSS and VSS + 12 V level) to aPWM signal switching between VDD and VSS.
A proposal for a simple level shifting circuit is givenin Fig.9.
The low-pass filter performs the demodulation, so that theaudio signal can be measured with an audio analyzer. Formeasuring low distortion values, the speed of the levelshifter is important. Special care has to be taken at asufficient supply decoupling and output waveforms withoutringing.
The handshake with the power stage is simulated by adirect connection of the release inputs (REL1 and REL2)with the switch outputs (SW1 and SW2) of the controller.The enable outputs (EN1 and EN2) for waking-up thepower stage are not used here, only the output level andtiming are measured.
handbook, full pagewidth
MGW154
10 kΩ
1.33 kΩ
2 kΩ
74LV14
20 kΩ
10 Ω
33 Ω
42 Ω10 nF
PWM
VDD
VSS
switch0/12 V
VSS
+5 V
BST82
PHC2300
10 Ω
Fig.9 Level shifter.
2001D
ec11
18
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
dbook, full pagewidth
MGW153
30 kΩ
47 µF
100 nF
STABILIZER
SGND
SGND
SGND
SGND
100 nF
audioanalyzer
audio left
audio right
220 nF
220 nF
100 nF
SGND
SGND
4
1 3
5
2
7
6
11
8
9
12 10
17
14
13
16
22
15
19
23
24
21
0/12 V −30 V/+30 V
20Rfb
Rfb
mute
mute
mute
V/I
V/I
SGND
TDA8929TSGND
OSCILLATOR
WINDOWCOMPARATOR
WINDOWCOMPARATOR
MODE
MANAGER
220 nF
220 nF
18
VSS1
SGND1
VDD1
IN1−
IN1+
MODE
VMODE
VSS
Vi(L)
Vi(R)
OSC
IN2+
IN2−
VDD2
VDD
SGND2
VSS2(sub)
VSS
47 µF
100 nFVDD
VDD
VSS
VSS
SW1
REL1
LEVEL SHIFTER 30 kHzLOW-PASS
DIAGCUR
EN1
STAB
VSSD
VSS
PWM1
PWM2
PWM
EN2
DIAGTMP
REL2
SW2
SGND
Vp
VSS
VDD
Vp
V
V
V
V
SGND
audioanalyzer0/12 V −30 V/+30 V
VDD
VSS
VSS
LEVEL SHIFTER 30 kHzLOW-PASS
PWM
V
Fig.10 Test diagram.
2001 Dec 11 19
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
15.2 BTL application
When using the system in a mono BTL application (formore output power), the inputs of both channels must beconnected in parallel. The phase of one the inputs must beinverted (see Fig.5). In principle the loudspeaker can beconnected between the outputs of the two single-endeddemodulation filters. For improving the common modebehavior of the filter, the configuration in Fig.12 is advised.
15.3 Mode pin
For correct operation the switching voltage on pin MODEshould be de-bounced. If this pin is driven by a mechanicalswitch an appropriate de-bouncing low-pass filter shouldbe used. If pin MODE is driven by an electronic circuit ormicrocontroller then it should remain, for at least 100 ms,at the mute voltage level (Vth1+) before switching back tothe standby voltage level.
15.4 External clock
Figure 11 shows an external clock oscillator circuit.
15.5 Reference designs
The reference design for a two-chip class-D audioamplifier for TDA8926J or TDA8927J and TDA8929T isshown in Fig.12. The Printed-Circuit Board (PCB) layout isshown in Fig.13. The bill of materials is given in Table 1.
The reference design for a two-chip class-D audioamplifier for TDA8926TH or TDA8927TH and TDA8929Tis shown in Fig.14. The PCB layout is shown in Fig.15.
handbook, full pagewidth
MGW155
R195 kΩ
9.1 kΩ
R1
39 kΩ
R20
mode select
external clock
S1on MODE
OSC
muteoff
C44220 nF
D15V6
C3120 pF1
HEF4047B
J1
14
2
GND
13
3 12
4 11
5 10
6 9
7 8
VDDA
6
TDA8929T
7
Fig.11 External oscillator circuit.
2001D
ec11
20
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
hand
book
, ful
l pag
ewid
thMLD633
39 kΩ
R1939 kΩ
R710 kΩ
220 nFC2R20
1 kΩ
R10
Sumida 33 µHCDRH127-330
L4
Sumida 33 µHCDRH127-330
L2
GND
220 nF
C44220 nF
C1
3
6 17PWM2
5
4
8
9
10 12
15
n.c.
1
1 nF
C29
input 2input 1
J5
J6
D1(5.6 V)
D2(7.5 V)
IN1+
IN1−
GND
2
11
SGND1
SGND2
S1
VSSA
VSS1VSS2
VDDA
VDD2VDD1
GND
1
2
1
2
1
2
QGND
QGND
QGND
QGND
OUT1−
OUT1+
OUT1+
OUT2−
OUT2−
OUT2+BOOT2
BOOT1
OUT1
OUT2
VDDDVDD1
VDD2
VSS2
VSS1
VDDD
VSSD
VSSA VSSD
27 kΩ
R17
220 nF
C3
OSC
POWERUP
VSSA
220 nF
C5
MODE
VDDA
R24200 kΩ
VDDD
onmute
off
U2
TDA8929T
CONTROLLERC22
330 pF
C27470 nF
C4220 nF C7
220 nF
C14470 nF
C181 nF
C191 nF
C201 nF
C211 nF
C16470 nF
C6220 nF
C915 nF
C815 nF
C43180 pF
IN2+
IN2−
R6 10 kΩ
C26470 nF
R410 kΩ
1 nF
C28
C24470 nF
R5 10 kΩ
J3J1
QGND QGND
inputs
outputs
power supply
mode select
J4
J2
VSS
C25470 nF
C23330 pF
R115.6 Ω
C10560 pF
VSSD
VDDD VSSD
R125.6 Ω
R135.6 Ω
R145.6 Ω
C11560 pF
C12560 pF
C13560 pF
R229.1 kΩ
VSSD
VSSA
VDDA
VDDD
C311 nF
C301 nF
C33220 nF
C351500 µF(35 V)
R2110 kΩ
C32220 nF
C341500 µF(35 V)
C38220 nF
C39220 nF
C4147 µF(35 V)
C36220 nF
C37220 nF
C4047 µF(35 V)
GND
QGND
QGND
beadL6
L5bead
L7bead
GND
VDD
VSS
+25 V
−25 V
1
2
3
13SW2
14REL2
16EN2
SW2
REL2
EN2
21
PWM1
23SW1
24
15
9
3
U1
TDA8926Jor
TDA8927J
POWER STAGE
17
16
14
4
2
1
8
10
13
5
6
7
11
12
REL1
20
EN1
SW1
REL1
EN1
19STAB
STAB18
VSSD
22DIAGCUR
DIAG
R1624 Ω
R1524 Ω
4 or 8 ΩSE
4 or 8 ΩSE
8 ΩBTL
C17220 nF
C15220 nF
Fig.12 Two-chip class-D audio amplifier application diagram for TDA8926J or TDA8927J and TDA8929T.
R21 and R22 are only necessary in BTL applications with asymmetrical supply.
BTL: remove R6, R7, C23, C26 and C27 and close J5 and J6.
C22 and C23 influence the low-pass frequency response and should be tuned with the real load (loudspeaker).
Inputs floating or inputs referenced to QGND (close J1 and J4) or referenced to VSS (close J2 and J3) for an input signal ground reference.
2001D
ec11
21
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
handbook, full pagewidth
MLD634
C24
D1
TDA8926J/27J & TDA8929T
Copper top, top view
Copper bottom, top view
Silk screen top, top view
Silk screen bottom, top view
D2
L7
L5
In1
GN
D
In2
Out1 Out2
state of D artVersion 21 03-2001
U1
C25C34
C35
C40
C26
C27
L6
ONMUTEOFF
C41
C16
C14
S1
R20
R1
R21L2
L4
R22
C38
U2
C39
C36
R24
R5
R4 R6
R7
C2
C31C30C18
C19
C20
C21
C1
C9
C8
J4
J5
J6
J1J3J2
R19
C13
C33
C32
C11
C29C28
R14
R12
C3
C43R10
C12
C17
R16
C15
R15
R13
R11C10
C5
C37
C22C23
C44
VD
D
VS
S
In1
Out1 Out2
GND
In2
QGND
VDD VSS
C7
C4
C6
Fig.13 Printed-circuit board layout for TDA8926J or TDA8927J and TDA8929T.
2001D
ec11
22
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
hand
book
, ful
l pag
ewid
th
MGW232
39 kΩ
R130 kΩ
R710 kΩ
100 nFC12R2
1 kΩ
R8
5.6 Ω
R11
Sumida 33 µHCDRH127-330
L4
Sumida 33 µHCDRH127-330
L2L1
bead
L3bead
GND
100 nF
C1220 nF
C11
3
6 17PWM2
5
4
8
9
10 12
15
n.c.
1
1 nF
C10
input 2input 1
J5
J6
D1(5.6 V)
IN1+
IN1−
GND
2
11
SGND1
SGND2
S1
VSSA
VSSD
VSS1VSS2
VDDA
VDD2VDD1
GND
1
2
1
2
1
2
QGND
QGND
QGND
QGND
OUT1−
OUT1+
OUT1+
OUT2−
OUT2−
OUT2+BOOT2
BOOT1
OUT1
OUT2
VDDDVDD1
VDD2
VSS2
VSS1
VDDD
VSSD
VSSAVSSD
27 kΩ
R37
220 nF
C2
OSC
POWERUP
VSSA
100 nF
C14
MODE
VDDA
R18200 kΩ
D2(7.5 V)
VDDD
onmute
off
U2
TDA8929T
CONTROLLERC3
330 pF
C81 µF
C13100 nF C27
100 nF
C36470 nF
C401 nF
C411 nF
C421 nF
C431 nF
C37470 nF
C28100nF
C3315 nF
C2615 nF
C15180 pF
IN2+
IN2−
R6 10 kΩ
C71 µF
R510 kΩ
1 nF
C9
C61 µF
R4 10 kΩ
J3J1
QGND QGND
inputs
outputs
power supply
mode select
J4
J2
VSS
C51 µF
C4330 pF
R125.6 Ω
C24560 pF
VSSD
VDDD VSSD
R135.6 Ω
R145.6 Ω
R155.6 Ω
C25560 pF
C34560 pF
C35560 pF
R109.1 kΩ
VSSD
VSSA
VDDA
VDDD
C171 nF
C161 nF
R910 kΩ
C20100 nF
C21100 nF
C2347 µF(35 V)
C18100 nF
C19100 nF
C2247 µF(35 V)
GND
QGND
QGND
QGND
beadL6
L5bead
L7bead
GND
C30100 nF
C321500 µF(35 V)
C29100 nF
C311500 µF(35 V)
VDD
VSS
+25 V
−25 V
1
2
3
13SW2
14REL2
16EN2
SW2
REL2
EN2
21
PWM1
23SW1
24
14
6
23
U1
TDA8926THor
TDA8927TH
POWER STAGE
16
15
13
24
22
21
5
8
11
2
3
4
9
10
REL1
20
EN1
SW1
REL1
EN1
19STAB
STAB
19VSS(sub)VSSD
17LIMVSSD
7STAB18
22DIAGCUR DIAG
R175.6 Ω
R165.6 Ω
4 or 8 ΩSE
4 or 8 ΩSE
8 ΩBTL
C39220 nF
C38220 nF
1, 12, 18, 20
n.c.
Fig.14 Two-chip class-D audio amplifier application diagram for TDA8926TH or TDA8927TH and TDA8929T.
R9 and R10 are only necessary in BTL applications with asymmetrical supply.
BTL: remove R6, R7, C4, C7 and C8 and close J5 and J6.
Demodulation coils L2 and L4 should be matched in BTL.
Inputs floating or inputs referenced to QGND (close J1 and J4) or referenced to VSS (close J2 and J3).
2001D
ec11
23
Philips S
emiconductors
Prelim
inary specification
Controller class-D
audio amplifier
TD
A8929T
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here inwhite to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
dbook, full pagewidth
MGW147
TDA8926TH/27THTDA8929T
Copper top, top view
Copper bottom, top view
Silk screen top, top view
Silk screen bottom, top view
In1In2
State of D art
ONMUOFF
S1
L4
L3C31
C32
C22
D1
C23
C37
C36L6 Version 2CTH1
L5
L1
C29
C2
C9C10
C8C7
R4R5
R7R6
R3
C30
C35
C1 C15
C12
C21J6J5
C19
C13
L7
C3C4
C5C6
C18
C11
R11
C20R8
R1 R2
C14
R12
R14
R13
R17 R16 R10R9C39
C43 J4
J2J3 J1
QGNDC42 C41 C40 C16 C17
C38
R15
C25
C24
C34
C26
C33
Jan 2001
U1 U2
C27
C28
L5
GND
Out1 Out2
VDD VSS
Fig.15 Printed-circuit board layout for TDA8926TH or TDA8927TH and TDA8929T.
2001 Dec 11 24
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
15.6 Reference design bill of material
Table 1 Two-chip class-D audio amplifier PCB (Version 2.1; 03-2001) for TDA8926J or TDA8927J and TDA8929T(see Figs 12 and 13)
COMPONENT DESCRIPTION VALUE COMMENTS
In1 and In2 Cinch input connectors 2 × Farnell: 152-396
Out1, Out2, VDD,GND and VSS
supply/output connectors 2 × Augat 5KEV-02;1 × Augat 5KEV-03
S1 on/mute/off switch PCB switch Knitter ATE 1 E M-O-M
U1 power stage IC TDA8926J/27J DBS17P package
U2 controller IC TDA8929T SO24 package
L2 and L4 demodulation filter coils 33 µH 2 × Sumida CDRH127-330
L5, L6 and L7 power supply ferrite beads 3 × Murata BL01RN1-A62
C1 and C2 supply decoupling capacitors forVDD to VSS of the controller
220 nF/63 V 2 × SMD1206
C3 clock decoupling capacitor 220 nF/63 V SMD1206
C4 12 V decoupling capacitor of thecontroller
220 nF/63 V SMD1206
C5 12 V decoupling capacitor of the powerstage
220 nF/63 V SMD1206
C6 and C7 supply decoupling capacitors forVDD to VSS of the power stage
220 nF/63 V SMD1206
C8 and C9 bootstrap capacitors 15 nF/50 V 2 × SMD0805
C10, C11,C12 and C13
snubber capacitors 560 pF/100 V 4 × SMD0805
C14 and C16 demodulation filter capacitors 470 nF/63 V 2 × MKT
C15 and C17 resonance suppress capacitors 220 nF/63 V 2 × SMD1206
C18, C19,C20 and C21
common mode HF coupling capacitors 1 nF/50 V 4 × SMD0805
C22 and C23 input filter capacitors 330 pF/50 V 2 × SMD1206
C24, C25,C26 and C27
input capacitors 470 nF/63 V 4 × MKT
C28, C29,C30 and C31
common mode HF coupling capacitors 1 nF/50 V 2 × SMD0805
C32 and C33 power supply decoupling capacitors 220 nF/63 V 2 × SMD1206
C34 and C35 power supply electrolytic capacitors 1500 µF/35 V 2 × Rubycon ZL very low ESR (largeswitching currents)
C36, C37,C38 and C39
analog supply decoupling capacitors 220 nF/63 V 4 × SMD1206
C40 and C41 analog supply electrolytic capacitors 47 µF/35 V 2 × Rubycon ZA low ESR
C43 diagnostic capacitor 180 pF/50 V SMD1206
C44 mode capacitor 220 nF/63 V SMD1206
D1 5.6 V zener diode BZX79C5V6 DO-35
D2 7.5 V zener diode BZX79C7V5 DO-35
R1 clock adjustment resistor 27 kΩ SMD1206
2001 Dec 11 25
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
R4, R5,R6 and R7
input resistors 10 kΩ 4 × SMD1206
R10 diagnostic resistor 1 kΩ SMD1206
R11, R12,R13 and R14
snubber resistors 5.6 Ω; >0.25 W 4 × SMD1206
R15 and R16 resonance suppression resistors 24 Ω 2 × SMD1206
R19 mode select resistor 39 kΩ SMD1206
R20 mute select resistor 39 kΩ SMD1206
R21 resistor needed when using anasymmetrical supply
10 kΩ SMD1206
R22 resistor needed when using anasymmetrical supply
9.1 kΩ SMD1206
R24 bias resistor for powering-up the powerstage
200 kΩ SMD1206
COMPONENT DESCRIPTION VALUE COMMENTS
15.7 Curves measured in reference design
handbook, halfpage102
10
1
10−1
10−3
10−2
MLD627
10−2 10−1 1Po (W)
THD+N(%)
10 102 103
(1)
(2)
(3)
Fig.16 THD + N as a function of output power.
2 × 8 Ω SE; VP = ±25 V:
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
handbook, halfpage
MLD628
10 102 103 104 105
102
10
1
10−1
10−3
10−2
fi (Hz)
THD+N(%)
(1)
(2)
Fig.17 THD + N as a function of input frequency.
2 × 8 Ω SE; VP = ±25 V:
(1) Po = 10 W.
(2) Po = 1 W.
2001 Dec 11 26
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage102
10
1
10−1
10−3
10−2
MLD629
10−2 10−1 1Po (W)
THD+N(%)
10 102 103
(1)
(2)
(3)
Fig.18 THD + N as a function of output power.
2 × 4 Ω SE; VP = ±25 V:
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
handbook, halfpage
MLD630
10 102 103 104 105
102
10
1
10−1
10−3
10−2
fi (Hz)
THD+N(%)
(1)
(2)
Fig.19 THD + N as a function of input frequency.
2 × 4 Ω SE; VP = ±25 V:
(1) Po = 10 W.
(2) Po = 1 W.
handbook, halfpage102
10
1
10−1
10−3
10−2
MLD631
10−2 10−1 1Po (W)
THD+N(%)
10 102 103
(1)
(2)
(3)
Fig.20 THD + N as a function of output power.
1 × 8 Ω BTL; VP = ±25 V:
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
handbook, halfpage
MLD632
10 102 103 104 105
102
10
1
10−1
10−3
10−2
fi (Hz)
THD+N(%)
(1)
(2)
Fig.21 THD + N as a function of input frequency.
1 × 8 Ω BTL; VP = ±25 V:
(1) Po = 10 W.
(2) Po = 1 W.
2001 Dec 11 27
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage
0
25
5
10
15
20
MLD609
10−2 10−1 1
(2)
Po (W)
P(W)
10 102 103
(1)
(3)
Fig.22 Power dissipation as a function of outputpower.
VP = ±25 V; fi = 1 kHz:
(1) 2 × 4 Ω SE.
(2) 1 × 8 Ω BTL.
(3) 2 × 8 Ω SE.
handbook, halfpage
0
(3) (1)
(2)
150
100
0
20
40
60
80
30
η(%)
Po (W)60 90 120
MLD610
Fig.23 Efficiency as a function of output power.
VP = ±25 V; fi = 1 kHz:
(1) 2 × 4 Ω SE.
(2) 1 × 8 Ω BTL.
(3) 2 × 8 Ω SE.
handbook, halfpage
10
(3)
(4)
(1)
(2)
35
200
0
40
80
120
160
15
Po(W)
VP (V)20 25 30
MLD611
Fig.24 Output power as a function of supplyvoltage.
THD + N = 0.5%; fi = 1 kHz:
(1) 1 × 4 Ω BTL.
(2) 1 × 8 Ω BTL.
(3) 2 × 4 Ω SE.
(4) 2 × 8 Ω SE.
handbook, halfpage
10
(3)
(4)
(1)
(2)
35
200
0
40
80
120
160
15
Po(W)
VP (V)20 25 30
MLD612
Fig.25 Output power as a function of supplyvoltage.
THD + N = 10%; fi = 1 kHz:
(1) 1 × 4 Ω BTL.
(2) 1 × 8 Ω BTL.
(3) 2 × 4 Ω SE.
(4) 2 × 8 Ω SE.
2001 Dec 11 28
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage
−100
0
−80
−60
−40
−20
MLD613
10210fi (Hz)
αcs(dB)
103 104 105
(1)
(2)
Fig.26 Channel separation as a function of inputfrequency.
2 × 8 Ω SE; VP = ±25 V:
(1) Po = 10 W.
(2) Po = 1 W.
handbook, halfpage
−100
0
−80
−60
−40
−20
MLD614
10210fi (Hz)
αcs(dB)
103 104 105
(1)
(2)
Fig.27 Channel separation as a function of inputfrequency.
2 × 4 Ω SE; VP = ±25 V:
(1) Po = 10 W.
(2) Po = 1 W.
handbook, halfpage
20
45
25
30
35
40
MLD615
10210fi (Hz)
G(dB)
103 104 105
(1)
(2)
(3)
Fig.28 Gain as a function of input frequency.
VP = ±25 V; Vi = 100 mV;Rs = 10 kΩ/Ci = 330 pF:
(1) 1 × 8 Ω BTL.
(2) 2 × 8 Ω SE.
(3) 2 × 4 Ω SE.
handbook, halfpage
20
45
25
30
35
40
MLD616
10210fi (Hz)
G(dB)
103 104 105
(1)
(2)
(3)
Fig.29 Gain as a function of input frequency.
VP = ±25 V; Vi = 100 mV;Rs = 0 Ω:
(1) 1 × 8 Ω BTL.
(2) 2 × 8 Ω SE.
(3) 2 × 4 Ω SE.
2001 Dec 11 29
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage
−100
0
−80
−60
−40
−20
MLD617
10210fi (Hz)
SVRR(dB)
103 104 105
(1)
(2)
(3)
Fig.30 SVRR as a function of input frequency.
VP = ±25 V; Vripple = 2 V (p-p) with respect to GND:
(1) Both supply lines in anti-phase.
(2) Both supply lines in phase.
(3) One supply line rippled.
handbook, halfpage
0 5
0
−100
−80
−60
−40
−20
1
(1)
(3)
SVRR(dB)
Vripple (V)2 3 4
MLD618
(2)
Fig.31 SVRR as a function of Vripple (p-p).
VP = ±25 V; Vripple with respect to GND:
(1) fripple = 1 kHz.
(2) fripple = 100 Hz.
(3) fripple = 10 Hz.
handbook, halfpage
0 10 20 30VP (V)
Iq(mA)
37.5
100
0
20
40
60
80
MLD619
Fig.32 Quiescent current as a function of supplyvoltage.
RL = open.
handbook, halfpage
0 10 20 30VP (V)
fclk(kHz)
40
380
340
348
356
364
372
MLD620
Fig.33 Clock frequency as a function of supplyvoltage.
RL = open.
2001 Dec 11 30
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage
0
5
1
2
3
4
MLD621
10−110−2Po (W)
Vripple(V)
1 10 102
(1)
(2)
Fig.34 Supply voltage ripple as a function of outputpower.
VP = ±25 V; 1500 µF per supply line; fi = 10 Hz:
(1) 1 × 4 Ω SE.
(2) 1 × 8 Ω SE.
handbook, halfpage5
010 104
MLD622
102 103fi (Hz)
SVRR(%)
1
2
3
4
(1)
(2)
Fig.35 SVRR as a function of input frequency.
VP = ±25 V; 1500 µF per supply line:
(1) Po = 30 W into 1 × 4 Ω SE.
(2) Po = 15 W into 1 × 8 Ω SE.
handbook, halfpage
600100
(3)
fclk (kHz)
THD+N(%)
200 300 400 500
10
1
10−1
10−2
10−3
MLD623
(1)
(2)
Fig.36 THD + N as a function of clock frequency.
VP = ±25 V; Po = 1 W in 2 × 8 Ω:
(1) 10 kHz.
(2) 1 kHz.
(3) 100 Hz.
handbook, halfpage
100 600
50
0
10
20
30
40
200
Po(W)
fclk (kHz)300 400 500
MLD624
Fig.37 Output power as a function of clockfrequency.
VP = ±25 V; RL = 2 × 8 Ω; fi = 1 kHz; THD + N = 10%.
2001 Dec 11 31
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
handbook, halfpage
100 600
150
0
30
60
90
120
200
Iq(mA)
fclk (kHz)300 400 500
MLD625
Fig.38 Quiescent current as a function of clockfrequency.
VP = ±25 V; RL = open.
handbook, halfpage
100 600
1000
0
200
400
600
800
200
Vr(PWM)(mV)
fclk (kHz)300 400 500
MLD626
Fig.39 PWM residual voltage as a function of clockfrequency.
VP = ±25 V; RL = 2 × 8 Ω.
2001 Dec 11 32
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
16 PACKAGE OUTLINE
UNITA
max. A1 A2 A3 bp c D (1) E (1) (1)e HE L Lp Q Zywv θ
REFERENCESOUTLINEVERSION
EUROPEANPROJECTION ISSUE DATE
IEC JEDEC EIAJ
mm
inches
2.65 0.300.10
2.452.25
0.490.36
0.320.23
15.615.2
7.67.4 1.27
10.6510.00
1.11.0
0.90.4 8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.
1.10.4
SOT137-1
X
12
24
w M
θ
AA1
A2
bp
D
HE
Lp
Q
detail X
E
Z
c
L
v M A
13
(A )3
A
y
0.25
075E05 MS-013
pin 1 index
0.10 0.0120.004
0.0960.089
0.0190.014
0.0130.009
0.610.60
0.300.29 0.050
1.4
0.0550.4190.394
0.0430.039
0.0350.0160.01
0.25
0.01 0.0040.0430.0160.01
e
1
0 5 10 mm
scale
SO24: plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
97-05-2299-12-27
2001 Dec 11 33
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
17 SOLDERING
17.1 Introduction to soldering surface mountpackages
This text gives a very brief insight to a complex technology.A more in-depth account of soldering ICs can be found inour “Data Handbook IC26; Integrated Circuit Packages”(document order number 9398 652 90011).
There is no soldering method that is ideal for all surfacemount IC packages. Wave soldering can still be used forcertain surface mount ICs, but it is not suitable for fine pitchSMDs. In these situations reflow soldering isrecommended.
17.2 Reflow soldering
Reflow soldering requires solder paste (a suspension offine solder particles, flux and binding agent) to be appliedto the printed-circuit board by screen printing, stencilling orpressure-syringe dispensing before package placement.
Several methods exist for reflowing; for example,convection or convection/infrared heating in a conveyortype oven. Throughput times (preheating, soldering andcooling) vary between 100 and 200 seconds dependingon heating method.
Typical reflow peak temperatures range from215 to 250 °C. The top-surface temperature of thepackages should preferable be kept below 220 °C forthick/large packages, and below 235 °C for small/thinpackages.
17.3 Wave soldering
Conventional single wave soldering is not recommendedfor surface mount devices (SMDs) or printed-circuit boardswith a high component density, as solder bridging andnon-wetting can present major problems.
To overcome these problems the double-wave solderingmethod was specifically developed.
If wave soldering is used the following conditions must beobserved for optimal results:
• Use a double-wave soldering method comprising aturbulent wave with high upward pressure followed by asmooth laminar wave.
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprintlongitudinal axis is preferred to be parallel to thetransport direction of the printed-circuit board;
– smaller than 1.27 mm, the footprint longitudinal axismust be parallel to the transport direction of theprinted-circuit board.
The footprint must incorporate solder thieves at thedownstream end.
• For packages with leads on four sides, the footprint mustbe placed at a 45° angle to the transport direction of theprinted-circuit board. The footprint must incorporatesolder thieves downstream and at the side corners.
During placement and before soldering, the package mustbe fixed with a droplet of adhesive. The adhesive can beapplied by screen printing, pin transfer or syringedispensing. The package can be soldered after theadhesive is cured.
Typical dwell time is 4 seconds at 250 °C.A mildly-activated flux will eliminate the need for removalof corrosive residues in most applications.
17.4 Manual soldering
Fix the component by first soldering twodiagonally-opposite end leads. Use a low voltage (24 V orless) soldering iron applied to the flat part of the lead.Contact time must be limited to 10 seconds at up to300 °C.
When using a dedicated tool, all other leads can besoldered in one operation within 2 to 5 seconds between270 and 320 °C.
2001 Dec 11 34
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
17.5 Suitability of surface mount IC packages for wave and reflow soldering methods
Notes
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximumtemperature (with respect to time) and body size of the package, there is a risk that internal or external packagecracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to theDrypack information in the “Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods”.
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it isdefinitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
PACKAGESOLDERING METHOD
WAVE REFLOW (1)
BGA, HBGA, LFBGA, SQFP, TFBGA not suitable suitable
HBCC, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, HVQFN, SMS not suitable(2) suitable
PLCC(3), SO, SOJ suitable suitable
LQFP, QFP, TQFP not recommended(3)(4) suitable
SSOP, TSSOP, VSO not recommended(5) suitable
2001 Dec 11 35
Philips Semiconductors Preliminary specification
Controller class-D audio amplifier TDA8929T
18 DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet waspublished. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DATA SHEET STATUS (1) PRODUCTSTATUS(2) DEFINITIONS
Objective data Development This data sheet contains data from the objective specification for productdevelopment. Philips Semiconductors reserves the right to change thespecification in any manner without notice.
Preliminary data Qualification This data sheet contains data from the preliminary specification.Supplementary data will be published at a later date. PhilipsSemiconductors reserves the right to change the specification withoutnotice, in order to improve the design and supply the best possibleproduct.
Product data Production This data sheet contains data from the product specification. PhilipsSemiconductors reserves the right to make changes at any time in orderto improve the design, manufacturing and supply. Changes will becommunicated according to the Customer Product/Process ChangeNotification (CPCN) procedure SNW-SQ-650A.
19 DEFINITIONS
Short-form specification The data in a short-formspecification is extracted from a full data sheet with thesame type number and title. For detailed information seethe relevant data sheet or data handbook.
Limiting values definition Limiting values given are inaccordance with the Absolute Maximum Rating System(IEC 60134). Stress above one or more of the limitingvalues may cause permanent damage to the device.These are stress ratings only and operation of the deviceat these or at any other conditions above those given in theCharacteristics sections of the specification is not implied.Exposure to limiting values for extended periods mayaffect device reliability.
Application information Applications that aredescribed herein for any of these products are forillustrative purposes only. Philips Semiconductors makeno representation or warranty that such applications will besuitable for the specified use without further testing ormodification.
20 DISCLAIMERS
Life support applications These products are notdesigned for use in life support appliances, devices, orsystems where malfunction of these products canreasonably be expected to result in personal injury. PhilipsSemiconductors customers using or selling these productsfor use in such applications do so at their own risk andagree to fully indemnify Philips Semiconductors for anydamages resulting from such application.
Right to make changes Philips Semiconductorsreserves the right to make changes, without notice, in theproducts, including circuits, standard cells, and/orsoftware, described or contained herein in order toimprove design and/or performance. PhilipsSemiconductors assumes no responsibility or liability forthe use of any of these products, conveys no licence or titleunder any patent, copyright, or mask work right to theseproducts, and makes no representations or warranties thatthese products are free from patent, copyright, or maskwork right infringement, unless otherwise specified.
© Koninklijke Philips Electronics N.V. 2001 SCA73All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changedwithout notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any licenseunder patent- or other industrial or intellectual property rights.
Philips Semiconductors – a worldwide company
Contact information
For additional information please visit http://www.semiconductors.philips.com . Fax: +31 40 27 24825For sales offices addresses send e-mail to: [email protected] .
Printed in The Netherlands 753503/01/pp36 Date of release: 2001 Dec 11 Document order number: 9397 750 08189