TDA8932B

Manufacturer Part NumberTDA8932B
DescriptionThe TDA8932B is a high efficiency class-D amplifier with low power dissipation
ManufacturerNXP Semiconductors
TDA8932B datasheet
 


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TDA8932B
Class-D audio amplifier
Rev. 04 — 18 December 2008
1. General description
The TDA8932B is a high efficiency class-D amplifier with low power dissipation.
The continuous time output power is 2
or 1
30 W in mono full-bridge application (R
the device can be used without any external heat sink when playing music. Due to the
implementation of thermal foldback, even for high supply voltages and/or lower load
impedances, the device continues to operate with considerable music output power
without the need for an external heat sink.
The device has two full-differential inputs driving two independent outputs. It can be used
in a mono full-bridge configuration (BTL) or in a stereo half-bridge configuration (SE).
2. Features
I
Operating voltage from 10 V to 36 V asymmetrical or 5 V to 18 V symmetrical
I
Mono-bridged tied load (full-bridge) or stereo single-ended (half-bridge) application
I
Application without heat sink using thermally enhanced small outline package
I
High efficiency and low-power dissipation
I
Thermally protected and thermal foldback
I
Current limiting to avoid audio holes
I
Full short-circuit proof across load and to supply lines (using advanced current
protection)
I
Switchable internal or external oscillator (master-slave setting)
I
No pop noise
I
Full-differential inputs
3. Applications
I
Flat panel television sets
I
Flat panel monitor sets
I
Multimedia systems
I
Wireless speakers
I
Mini and micro systems
I
Home sound sets
Product data sheet
15 W in stereo half-bridge application (R
= 8 ). Due to the low power dissipation
L
= 4 )
L

TDA8932B Summary of contents

  • Page 1

    ... TDA8932B Class-D audio amplifier Rev. 04 — 18 December 2008 1. General description The TDA8932B is a high efficiency class-D amplifier with low power dissipation. The continuous time output power mono full-bridge application (R the device can be used without any external heat sink when playing music. Due to the ...

  • Page 2

    ... Output power is measured indirectly; based on R [2] Two layer application board (55 mm convection. 5. Ordering information Table 2. Type number Package TDA8932BT TDA8932BTW HTSSOP32 plastic thermal enhanced thin shrink small outline TDA8932B_4 Product data sheet Quick reference data = 320 kHz unless otherwise specified. osc amb ...

  • Page 3

    ... Product data sheet OSCIO 31 PWM MODULATOR MANAGER PWM MODULATOR UVP, TF, WP MODE TDA8932B 9 1, 16, 17 SSA SSD(HW) Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V DDA 8 DRIVER HIGH CTRL DRIVER LOW DRIVER HIGH CTRL DRIVER LOW V DDA STABILIZER ...

  • Page 4

    ... V regulator for logic supply Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 1 IN1P 2 IN1N 3 4 DIAG DDA TDA8932BTW V 9 SSA TEST 13 IN2N 14 15 IN2P 16 001aaf599 Pin configuration HTSSOP32 © NXP B.V. 2008. All rights reserved. ...

  • Page 5

    ... The exposed die pad has to be connected Functional description 8.1 General The TDA8932B is a mono full-bridge or stereo half-bridge audio power amplifier using class-D technology. The audio input signal is converted into a Pulse Width Modulated (PWM) signal via an analog input stage and PWM modulator. To enable the output power ...

  • Page 6

    ... NXP Semiconductors 8.2 Mode selection and interfacing The TDA8932B supports four operating modes, selected using pins POWERUP and ENGAGE: • Sleep mode: with low supply current. • Mute mode: the amplifiers are switching idle (50 % duty cycle), but the audio signal at the output is suppressed by disabling the Vl-converter input stages. The capacitors on pins HVP1 and HVP2 have been charged to half the supply voltage (asymmetrical supply only) ...

  • Page 7

    ... Using an external resistor the carrier frequency is set to an optimized value of 320 kHz (see If two or more TDA8932B devices are used in the same audio application recommended to synchronize the switching frequency of all devices. This can be realized by connecting all OSCIO pins together and confi ...

  • Page 8

    ... Oscillation frequency as a function of resistor Rosc summarizes how to configure the TDA8932B in master or slave configuration. Section 14.6 “Device Master or slave configuration Pin OSCREF Rosc > SSD(HW) Rosc = 0 ; shorted to V Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi ...

  • Page 9

    ... NXP Semiconductors 8.4.1 Thermal Foldback (TF) If the junction temperature of the TDA8932B exceeds the threshold level (T gain of the amplifier is decreased gradually to a level where the combination of dissipation (P) and the thermal resistance from junction to ambient [R temperature around the threshold level. This means that the device will not completely switch off, but remains operational at lower output power levels ...

  • Page 10

    ... TDA8932B is protected against any overstress supply voltage > caused by other or external causes, then the TDA8932B will shut down, but the device can still be damaged since the supply voltage will remain > this case. The OVP protection is not a supply voltage clamp. ...

  • Page 11

    ... Diagnostic output for different short-circuit conditions IN1P IN1N audio input IN2P IN2N Input configuration for mono BTL application Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi 2 restart 0 V short to supply line 001aad759 Figure Section 14 ...

  • Page 12

    ... NXP Semiconductors • Pins HVP1 and HVP2: The time required for charging the SE capacitor depends on its value. The half supply voltage output is disabled when the TDA8932B is used in a symmetrical supply application. • Pin HVPREF: This output voltage reference buffer charges the capacitor on pin HVPREF. • ...

  • Page 13

    ... Table 7. Pin TDA8932B_4 Product data sheet Internal circuitry …continued Symbol Equivalent circuit ENGAGE 5 POWERUP CGND V DDA Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V 2.8 V DDA I ref = 100 CGND SSA 001aaf608 V DDA 6 V CGND 001aad788 ...

  • Page 14

    ... NXP Semiconductors Table 7. Pin TDA8932B_4 Product data sheet Internal circuitry …continued Symbol Equivalent circuit V SSA OSCREF HVPREF TEST DREF Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V DDA 9 V SSD 001aad791 V DDA I ref 10 V 001aad792 SSA V DDA 11 V SSA ...

  • Page 15

    ... Symbol Equivalent circuit HVP2 HVP1 V DDP2 V SSP2 V SSP1 V DDP1 BOOT2 BOOT1 OUT2 OUT1 STAB2 STAB1 OSCIO Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V DDA 19 001aag026 SSA 20, 29 23, 26 001aad798 21, 28 OUT1, OUT2 001aad799 V DDP1, V DDP2 22 SSP1, ...

  • Page 16

    ... V SSP1 SSP2 DD DDP1 DDP2 = 1500 ; C = 100 1800 V. esd = 200 pF 0. Conditions free air natural convection JEDEC test board 2 layer application board Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Min [1] 0.3 [2] 5 [3] V SSD(HW) [4] V 0.3 CGND [5] V 0.3 SS ...

  • Page 17

    ... Conditions asymmetrical supply symmetrical supply Sleep mode; no load Operating mode; no load, no snubbers and no filter connected 125 open pin Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Min Typ Max Unit [ K K/W [3] ...

  • Page 18

    ... SE; with respect to pin HVPREF Mute mode Operating mode BTL Mute mode Operating mode Mute mode and Operating mode; with respect to pins V SSP1 V SSP2 HVPREF HVPREF current limiting Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Min Typ Table 2.5 - 2.1 0. 0.5V ...

  • Page 19

    ... kHz o i Operating mode f = 100 kHz i differential Operating mode Mute mode Mute mode (RMS) and kHz i Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Min Typ 140 - 4 4 Min Typ - 320 300 - - 10 ...

  • Page 20

    ... C; unless otherwise specified. s amb Conditions kHz kHz i Operating mode f = 100 1000 Hz i sleep 100 Hz i differential Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi unless otherwise specified. Min Typ - [5] 10.9 12.1 - 12.1 13.8 15.3 - 15.3 11.1 12.3 - 12.3 14.0 15 ...

  • Page 21

    ... THD+N = 0.5 % THD THD+N = 0.5 % THD measurement. DSon 45 mm copper, FR4 base material in free air with natural convection. Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Min Typ [4] - 100 [ 100 - ...

  • Page 22

    ... SE capacitor ( ) = minimum pulse width (s typical at THD can be estimated by 1. 0.5% and Figure 9 show the estimated output power at THD+N = 0.5 % and = 0. 0.05 s ESR Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Equation 2 and Equation – min osc P R ...

  • Page 23

    ... V ( THD 001aad770 ( ( THD Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi © NXP B.V. 2008. All rights reserved. 001aad769 40 (V) ...

  • Page 24

    ... SSP1 = on-resistance power switch ( ) = equivalent series resistance SE capacitor ( ) Table 14 shows the practical required values. Filter component values Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Equation 5 and Equation 6. V (V) DDP2 SSP2 Llc ( H) Clc (nF) 22 680 33 470 ...

  • Page 25

    ... Gain reduction The gain of the TDA8932B is internally fixed for SE ( for BTL). The gain can be reduced by a resistive voltage divider at the input (see Fig 10. Input configuration for reducing gain When applying a resistive divider, the total closed-loop gain G ...

  • Page 26

    ... Substituting 4 results in a gain of G 14.6 Device synchronization If two or more TDA8932B devices are used in one application it is recommended that all devices are synchronized running at the same switching frequency to avoid beat tones. Synchronization can be realized by connecting all OSCIO pins together and configuring one of the TDA8932B devices as master, while the other TDA8932B devices are confi ...

  • Page 27

    ... T j(max) T amb P = power dissipation which is determined by the efficiency of the TDA8932B The power dissipation is shown in The thermal foldback will limit the maximum junction temperature to 140 C. 14.8 Pumping effects When the amplifier is used configuration, a so-called 'pumping effect' can occur. During one switching interval, energy is taken from one supply (e.g. V that energy is delivered back to the other supply line (e ...

  • Page 28

    ... NXP Semiconductors Fig 12. SE application for reducing pumping effects TDA8932B_4 Product data sheet IN1P audio in1 IN1N IN2N audio in2 IN2P Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier OUT1 OUT2 001aad763 © NXP B.V. 2008. All rights reserved ...

  • Page 29

    ... P (W/channel 001aad774 2 10 THD+N (%) (Hz Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 001aad773 (1) (2) ( (W/channel 001aad775 (1) ( (Hz ...

  • Page 30

    ... P (W/channel (1) V (2) V Fig 18. Channel separation as a function of frequency Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 001aad777 (1) ( (Hz 500 mV (RMS) referenced to ground; R ripple = ...

  • Page 31

    ... P Fig 20. Power dissipation as a function of supply 001aad780 (2) (1) ( (W/channel Fig 22. Power dissipation as a function of output Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi kHz; power dissipation in junction only; short time ...

  • Page 32

    ... V 001aaf890 V (V) operating 2 2 (V) POWERUP = 1 kHz; V > ENGAGE Fig 25. Output voltage as a function of voltage on pin Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi ( 120 240 360 kHz; 2 layer SO32 application ...

  • Page 33

    ... P ( 001aae114 2 10 THD+N (%) (Hz Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 001aad783 (1) (2) ( 001aae115 (1) ( (Hz ...

  • Page 34

    ... P ( sink for continuous time output power (1) R (2) R (3) R (4) R Fig 31. Output power as a function of supply voltage Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 001aae117 (1) ( (Hz 500 mV (RMS) referenced to ground; R ripple = 22 V ...

  • Page 35

    ... V (3) V 001aae119 3.0 P (W) 2.0 1 (W) o (1) V (2) V Fig 34. Power dissipation as a function of output Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier (3) (2) ( 120 240 360 480 = kHz; 2 layer SO32 application L i board ( mm) without heat sink ...

  • Page 36

    ... Fig 35. Power dissipation as a function of supply voltage TDA8932B_4 Product data sheet 6 P (W) 4 (1) ( THD dashed line will require heat sink for continuous o Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier 001aaf904 (V) P © NXP B.V. 2008. All rights reserved ...

  • Page 37

    ... INREF 12 21 Cinref TEST 100 IN2N 14 19 Cin IN2P 15 18 470 nF V SSD(HW (asymmetrical supply) Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V SSD(HW) OSCIO HVP1 VP V DDP1 Cvddp BOOT1 100 nF Cbo 15 nF Llc OUT1 V SSP1 Rsn 10 STAB1 ...

  • Page 38

    ... DDP2 100 IN2N HVP2 14 19 IN2P DREF SSD(HW) SSD(HW BTL (asymmetrical supply) Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Rhvp Rhvp 470 470 VP Cvddp Chvp 100 nF 100 nF Cbo 15 nF Llc Rsn Clc 10 Csn 470 pF Cstab ...

  • Page 39

    ... Cinref TEST 100 IN2N 14 19 Cin IN2P 15 18 470 nF V SSD(HW) VSSA (symmetrical supply) Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V SSD(HW) VSSA OSCIO HVP1 VDD V DDP1 Cvddp BOOT1 Cbo 100 Llc OUT1 V SSP1 Rsn VSS ...

  • Page 40

    ... TDA8932B SSA VSSA 9 OSCREF 10 HVPREF 11 INREF 12 Cinref TEST 100 nF 13 IN2N 14 IN2P 15 V SSD(HW) VSSA 16 BTL (symmetrical supply) Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier V SSD(HW) 32 VSSA OSCIO 31 HVP1 30 VDD V DDP1 29 Cvddp BOOT1 Cbo 28 100 Llc OUT1 27 V SSP1 ...

  • Page 41

    ... 0.49 0.27 20.7 7.6 10.65 1.27 0.36 0.18 20.3 7.4 10.00 0.02 0.011 0.81 0.30 0.419 0.05 0.01 0.007 0.80 0.29 0.394 REFERENCES JEDEC JEITA MO-119 Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi detail 1.1 1.2 1.4 0.25 0.25 0.1 0.4 1.0 0.043 0.047 0.004 0.055 0.01 0.01 0.016 ...

  • Page 42

    ... 2.5 scale (1) ( 0.30 0.20 11.1 5.1 6.2 3.6 0.19 0.09 10.9 4.9 6.0 3.4 REFERENCES JEDEC JEITA MO-153 Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifi detail 8.3 0.75 0.65 1 0.2 0.1 7.9 0.50 EUROPEAN PROJECTION SOT549 ...

  • Page 43

    ... Solder bath specifications, including temperature and impurities TDA8932B_4 Product data sheet Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier © NXP B.V. 2008. All rights reserved ...

  • Page 44

    ... Lead-free process (from J-STD-020C) Package reflow temperature ( C) 3 Volume (mm ) < 350 260 260 250 Figure 42. Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Figure 42) than a SnPb process, thus 350 220 220 350 to 2000 > 2000 260 260 250 245 245 245 © ...

  • Page 45

    ... Double diffused Metal Oxide Semiconductor ElectroStatic Discharge OverCurrent Protection OverTemperature Protection OverVoltage Protection Pulse Width Modulation Single-Ended Thermal Foldback UnBalance Protection UnderVoltage Protection Window Protection Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier peak temperature time 001aac844 © NXP B.V. 2008. All rights reserved ...

  • Page 46

    ... Data sheet status Product data sheet values amended in Table 1 and P Product data sheet Preliminary data sheet Objective data sheet Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier Change notice Supersedes - TDA8932B_3 Table 10 - TDA8932B_2 - TDA8932B_1 - - © NXP B.V. 2008. All rights reserved ...

  • Page 47

    ... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. http://www.nxp.com salesaddresses@nxp.com Rev. 04 — 18 December 2008 TDA8932B Class-D audio amplifier © NXP B.V. 2008. All rights reserved ...

  • Page 48

    ... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2008. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com TDA8932B All rights reserved. Date of release: 18 December 2008 Document identifier: TDA8932B_4 ...