AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet

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... AN10436 TDA8932B/33(B) Class-D audio amplifier Rev. 01 — 12 December 2007 Document information Info Content Keywords Class-D amplifier, High efficiency, Switch mode amplifier, Flat TV. Abstract This application note describes a stereo Switched Mode Amplifier (SMA) for audio, based on either the TDA8932B or TDA8933(B) Class-D audio amplifier device of NXP Semiconductors, which has been designed for Flat TV applications ...

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... Date Description 01.00 20071212 First release Contact information For additional information, please visit: For sales office addresses, please send an email to: AN10436_1 Application note TDA8932B/33(B) Class-D audio amplifier http://www.nxp.com salesaddresses@nxp.com Rev. 01 — 12 December 2007 AN10436 © NXP B.V. 2007. All rights reserved ...

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... RMS short time output power in 4 Ω SE without heat sink. RMS short time output power in 8 Ω SE without heat sink. RMS Rev. 01 — 12 December 2007 AN10436 . The two versions are RMS in SE configuration. DSon © NXP B.V. 2007. All rights reserved ...

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... MODULATOR MANAGER PWM CTRL MODULATOR MODE TDA8932B 9 1, 16, 17 SSA SSD(HW) Figure 2). The power stage consists out of a low side and a high side Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 28 29 DRIVER HIGH 27 DRIVER 26 LOW 21 20 DRIVER HIGH 22 ...

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... OUT2 15 IN2P describes the complete application design of the TDA8932B/33(B) and includes ) on HVPREF (pin 11) and two other buffers are for the two AC-couple HVPREF ) in series with the speaker. SE Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier PWM LP FILTER C SE PWM LP FILTER ...

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... V TEST DDP2 13 20 IN2N HVP2 14 19 IN2P DREF SSD(HW) SSD(HW Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Cvssp 100 nF HVP1 Cvddp Csn 100 nF 470 pF VP Rsn 10 (1) Cbo Llc 15 nF Clc Cse Cstab 100 nF Llc ...

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... VSSA IN2N HVP2 14 19 IN2P DREF SSD(HW) SSD(HW) VSSA 16 17 Section 4.4). Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier VSS VSSA Cvssp 100 nF Cvddp Csn 100 nF 470 pF VDD Rsn 10 (1) Cbo Llc 15 nF VSS Clc Cstab 100 nF ...

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... V TEST DDP2 100 IN2N HVP2 14 19 IN2P DREF SSD(HW) SSD(HW Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Chvp 100 nF Rhvp HVPREF 470 Cvddp Csn 100 nF 470 pF VP Rsn 10 (1) Cbo Llc 15 nF Rsn Clc 10 Csn ...

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... Cinref TEST 100 nF VSSA 13 20 IN2N 14 19 IN2P SSD(HW) VSSA 16 17 Table 3 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier V SSD(HW) VSS VSSA Cvssp OSCIO 100 nF HVP1 Cvddp Csn 100 nF 470 pF V DDP1 VDD Rsn BOOT1 10 (1) Cbo ...

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... POWERUP, ENGAGE and ) in series with the speaker. The power stage is enabled (starts SE 2.6) and as a consequence the DIAG (pin 4) is set to low. The internal pull-up shows an overview of the internal protections. Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier V (V) V (V) ...

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... DDA SSA I Figure 21). Section 2.6.6 ⋅ osc Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier − avoid pop noise. For DDA SSA for more detail) or the UVP threshold level sets the oscillator SSA © NXP B.V. 2007. All rights reserved. (1) ...

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... SSA MASTER L/R CHANNEL TDA8932B/33( OSCREF OSCIO SSA V SSA R osc C osc 39 k 100 nF Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier for noise osc 2.5). SLAVE SUBWOOFER CHANNEL TDA8932B/33( OSCREF OSCIO SSA V SSA 010aaa001 © NXP B.V. 2007. All rights reserved. ...

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... V - low [3] 29 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Remark Unique thermal limiting to avoid audio holes when the junction temperature exceeds 140 °C during normal operation. (See Section 2.6.1) Unique current limiting to avoid audio holes when the current exceeds the trigger level during normal operation ...

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... DD 11 ⋅ ----- - V DDA 32 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier …continued Remark Power stage becomes floating entering FAULT mode. (See Section 2.6.7) Power stage becomes floating entering FAULT mode ...

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... SSA with respect to the HVPREF voltage at pin 11. The UBP is triggered when the 8 ⋅ HVPREF 5 8 ⋅ HVPREF 3 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier (V). SSA − V DDA SSA (pin 8) referenced to DDA © NXP B.V. 2007. All rights reserved. (4) ), the DDA ...

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... V = SSA 3 = unbalance protection analog supply voltage. V (V), HVPREF is connected to GND. Equation 5 Section 4.4 for more detail. Section 2.6.2. Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier (V) SSA (pin 8) referenced to DDA (V) HVPREF and Equation 6 The HVPREF The DIAG © ...

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... ENGAGE 6 POWERUP CGND DDA TDA8932BT V 9 SSA TDA8933T 10 OSCREF 11 HVPREF INREF 12 TEST 13 IN2N 14 IN2P SSD(HW) 010aaa422 Rev. 01 — 12 December 2007 AN10436 Section 2.6. SSD(HW) 31 OSCIO 30 HVP1 29 V DDP1 28 BOOT1 27 OUT1 26 V SSP1 25 STAB1 24 STAB2 V 23 SSP2 22 OUT2 21 BOOT2 20 ...

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... TDA8933BTW OSCREF 10 HVPREF 11 INREF 12 13 TEST 14 IN2N IN2P SSD(HW) is connected to the supply ground. With a symmetrical supply, SSD(HW) is connected to the negative supply line SSA Rev. 01 — 12 December 2007 AN10436 32 V SSD(HW) 31 OSCIO 30 HVP1 29 V DDP1 28 BOOT1 27 OUT1 26 V SSP1 25 STAB1 24 STAB2 ...

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... DSon s ESR = ----------------------------------------------------------------------------------------------------------------------------------- ⋅ Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier into 4 Ω without a heat sink. The P into 4 Ω V). RMS P into 8 Ω without a heat sink. The P into 8 Ω V). RMS P 2 ⎞ ...

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... ( THD Fig 11. SE output power as a function of supply voltage Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 2 ⎞ ⋅ ⋅ – f ⎠ min osc P Section 3.2). show the estimated output power for the ...

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... V ( THD Fig 13. BTL output power as a function of supply voltage and Figure 13 are calculated with R = 4.0 A (minimum). O(ocp) Figure 15, Figure 16, and Figure 17 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier = 0.15 Ω ( °C), DSon j 001aad771 ( 0.15 Ω ...

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... ( THD Fig 17. TDA8933(B): BTL output power as a function of supply voltage and Figure 17 are calculated with R = 2.0 A (minimum). O(ocp) Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 010aaa108 0.39 Ω (at T DSon ...

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... DSon s ESR V ≤ p --------------------------------------------------- - ) ⋅ DSon DDP SSP = 4 A minimum): O(ocp) Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier = 2 A minimum (TDA8933(B)) because it will © NXP B.V. 2007. All rights reserved. (12) (13 ...

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... POWERUP circuits to control SLEEP mode OPEN-DRAIN OUTPUT 6 POWERUP 7 CGND 010aaa007 Fig 20. Sleep control open-drain output OPTIONAL CIRCUIT FOR MUTE CONTROL 10 k SLEEP OPERATING GND Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier DDA POWERUP CGND 010aaa006 3 ...

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... OPTIONAL CIRCUIT TO DISABLE POWER STAGE ERROR FAULT OPERATING GND Figure 23). AC-couple capacitors are required for DC-blocking C5 R2 4.7 k 470 4.7 k 470 nF Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 2 DIAG 1 k 100 k 7 CGND 010aaa010 IN1P 100 k 330 pF ...

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... ⎝ ⎠ ⋅ results in a cut-off frequency of 6 Hz, well below 20 Hz. 25). Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier = 100 kΩ. A low pass i f 3dB(h) 010aaa012 Equation 15 results in a cut-off © NXP B.V. 2007. All rights reserved. (14) (15) (16) ...

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... EQ ⋅ kΩ 26.3 dB. v(tot) − V DDA Figure 35 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier IN1P 100 k 330 pF IN1N 3 010aaa013 Equation 17 and Equation the reference for the output. The SSA for more information. © NXP B.V. 2007. All rights reserved. ...

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... A. AN10436_1 Application note Filter component values Impedance (Ω for BTL configuration. = 0.15 Ω and R = 0.05 Ω and R s Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier (μH) C14 / C23 (nF) 22 680 33 470 47 330 10 1500 15 1000 22 680 ...

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... Figure 26 R and C ). Filter resonance will occur due to the inductive the speaker voice coil. E PWM Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Output power (W per channel − DDP SSP voice coil equivalent ...

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... Ω Ω = 100 Ω = 150 Ω = 220 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier < (nF) C (nF) R (Ω 680 100 39 - 150 ...

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... PWM cl1 = 100 V) can be used for this purpose. The reverse voltage of the diode R 1 ⋅ ⋅ C15 L Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier = 40 kHz) of the filter, the o ) the LC Figure 28). voice coil equivalent circuit ...

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... This because the voltage at the SE capacitor can be is equal to: rated ⋅ − DDP SSP Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier −3dB −3dB 1000 2200 680 1500 470 1000 ). In these situations the peak voltage at ...

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... DDP SSP = 22 V and f P osc shows a proposed floor plan of the critical components that contribute to a good Section 3.9.2. Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier − V (forward voltage drop STAB1 F 3.10) reduces the voltage ringing at the Figure 33). = 320 kHz in Equation ...

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... Large signal supply and output C15 C24 C14 C23 Audio outputs Supply I/O CONNECTORS AT ONE SIDE 30). Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Small signal input U1 SOLID “CLEAN” GND Audio inputs Figure Figure Figure 33). Figure © NXP B.V. 2007. All rights reserved. 010aaa056 31) ...

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... Fig 31. HF decoupling STAB1/2 C17 010aaa057 Fig 33. RC output snubber network C4 C10 C17 R12 C18 C31 C30 Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier C10 C17 24 23 C25 R12 C18 ...

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... Increasing the area of the thermal copper planes, the number of planes, or the copper thickness will further reduce the thermal resistance R AN10436_1 Application note TDA8932B/33(B) Class-D audio amplifier ) when soldered to a thermal copper plane th(j-a) Section 5.3. th(j-a) Rev. 01 — 12 December 2007 AN10436 th(j-a) level (thermal resistance is SSA of both packages. © NXP B.V. 2007. All rights reserved ...

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... Figure 47 °C and R amb 22), staying below the TF threshold level of 140 ° × Ω the TF becomes active. The TF will gradually reduce the gain Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Section 3.12). Equation 22 can be used: or Figure ...

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... INREF BOOT2 13 20 TEST V DDP2 14 19 IN2N HVP2 15 18 IN2P C30 16 17 100 SSD/HW SSD/HW Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier C4 100 nF HVP1 C9 C8 100 nF 470 OUT1 C12 C14 100 nF 680 nF R8 ...

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... SMD 0805 47 k SMD 0805 12 k SMD 0805 22 R SMD 2512 39 k SMD 0805 PCB switch 090320901 / Secme TDA8932BT SOT287-1 (SO32) / NXP Semiconductors TDA8933(B)T SOT287-1 (SO32) / NXP Semiconductors Rev. 01 — 12 December 2007 AN10436 © NXP B.V. 2007. All rights reserved ...

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... NXP Semiconductors Fig 36. Top view, copper and silk screen top Fig 37. Top view, copper and silk screen bottom AN10436_1 Application note TDA8932B/33(B) Class-D audio amplifier Rev. 01 — 12 December 2007 AN10436 010aaa078 010aaa110 © NXP B.V. 2007. All rights reserved ...

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... Two 100 nF SMD capacitors (C8 and C25) and an V pin 8 DDA TDA8932B/33( ohm CURRENTS 29 L1 FERRITE C8 BEAD C25 20 Rev. 01 — 12 December 2007 AN10436 ) of the DDA 27 OUT 1 LP C15 FILTER 22 OUT 2 LP C24 FILTER 010aaa063 © NXP B.V. 2007. All rights reserved ...

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... Application note SOUND PROCESSOR OUT DAC GND GND FERRITE BEAD GND Figure 40). Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier DIFFERENTIAL INPUT AMPLIFIER TDA8932B/33(B) SPEAKER LP FILTER 100nF GND STAR GROUND SOLID GROUND PLANE AMPLIFIER SIDE 010aaa079 © NXP B.V. 2007. All rights reserved. ...

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... Application note TDA8932B/33(B) IN1P 2 27 OUT1 3 IN1N IN2N 14 22 OUT2 15 IN2P ⋅ ------------------- η ⋅ ------------------- η ⋅ Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier LP FILTER C15 LP FILTER C24 010aaa064 © NXP B.V. 2007. All rights reserved. (23) (24 ...

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... Ω Ω Ω kHz 4.7 kΩ, no load RMS × Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier = 25 °C unless specified = 1 kHz amb Min Typ Max [1] [ ...

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... THD N (%) (W/channel × 8 Ω ( kHz ( kHz (3) = 100 Hz Fig 42. THD function of output power Rev. 01 — 12 December 2007 AN10436 Min Typ Max Unit μ μV - 100 - - 45,000 - ...

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... V ripple × 4 Ω ( × 8 Ω Fig 46. SVRR as a function of frequency Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 001aad775 2 1 (1) ( × 8 Ω SE ...

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... P (W/channel ( × 4 Ω ( × 8 Ω Remark: Power dissipation in junction only. o Fig 50. Power dissipation as a function of output power Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 001aad779 0 (1) ( μ ...

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... Ω Ω Ω Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 001aaf886 (1) (2) ( °C unless specified = 1 kHz, T amb Min Typ Max Unit ...

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... THD N (%) 10 10 (1) ( (1) 6 kHz (2) 1 kHz (3) 100 Hz Fig 53. THD function of output power Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier Min Typ Max Unit - 35 305 - - 25 - 100 - - 104 - RMS 0 to 45,000 - ...

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... SVRR (dB) 20 (2) ( 100 (Hz 500 mV ripple input, R (1) 4 Ω BTL @ V (2) 8 Ω BTL @ V Fig 57. SVRR as a function of frequency Rev. 01 — 12 December 2007 AN10436 001aae115 (1) ( (Hz) i 001aae117 (1) ( (Hz) ...

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... P ( kHz i (1) 4 Ω BTL @ V (2) 8 Ω BTL @ V Remark: Power dissipation in junction only Fig 61. Power dissipation as a function of output power Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier 001aaf893 (3) (1) (4) ( 001aae120 (2) (1) 2 ...

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... R board (55 mm × 45 mm) without heat sink. (1) V (2) V Fig 63. SE output power as a function of time and Figure 65 show the TDA8932BT output power as a function of time at Rev. 01 — 12 December 2007 AN10436 TDA8932B/33(B) Class-D audio amplifier , because the (2) 16 (1) ...

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... REF 50 010aaa102 DL DISPLAY LINE 50.0 50 BATTERY STOP 30.00 MHz START 30 MHz SWP 750 msec RES BW 100 kHz Fig 67. 30 MHz to 300 MHz Rev. 01 — 12 December 2007 AN10436 001aaf899 (2) (1) 120 240 360 480 600 t ( kHz; 2 layer SO32 application board i . rated ...

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... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Rev. 01 — 12 December 2007 AN10436 © NXP B.V. 2007. All rights reserved ...

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... 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. 2007. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 12 December 2007 AN10436 All rights reserved. Document identifier: AN10436_1 ...