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NXP Semiconductors TDA8932B manual

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  • Page 1

    1. General description The TD A8932B is a high efficiency class-D amplifier with low po wer dissipation. The continuous time output pow er is 2 × 15 W in stereo half-br idge application (R L =4 Ω ) or 1 × 30 W in mono full-bridge application (R L =8 Ω ). Due to the low power dissipation the de vice can be used without any e xter nal heat si[...]

  • Page 2

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 2 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 4. Quic k reference data [1] Output power is measured indirectly; based on R DSon measurement. [2] T wo la yer application board (55 mm × 45 mm), 35 µ m copper , FR4 base material in [...]

  • Page 3

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 3 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 6. Bloc k diagram Fig 1. Block dia gram 001aaf597 2 10 31 8 28 29 27 3 12 TDA8932B OSCILLATOR 26 BOOT1 V DDP1 OUT1 V SSP1 PWM MODULATOR DRIVER HIGH DRIVER LOW CTRL MANAGER CTRL PWM MODU[...]

  • Page 4

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 4 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 7. Pinning inf ormation 7.1 Pinning 7.2 Pin description Fig 2. Pin configuration SO32 Fig 3. Pin configuration HTSSOP32 TD A8932BT V SSD(HW) V SSD(HW) IN1P OSCIO IN1N HVP1 DIAG V DDP1[...]

  • Page 5

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 5 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier [1] The exposed die pad has to be connected to V SSD(HW) . 8. Functional description 8.1 General The TD A8932B is a mono full-bridge or stereo half-br idge audio pow er amplifier using[...]

  • Page 6

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 6 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 8.2 Mode selection and interfacing The TD A8932B can be s witched in three operating modes using pins PO WER UP and ENGA GE: • Sleep mode: with low supply current. • Mute mode: the [...]

  • Page 7

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 7 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 8.3 Pulse width modulation frequency The output signal of the amplifier is a PWM signal with a carrier frequency of appro ximately 320 kHz. Using a 2nd-order low-pass filter in the ap[...]

  • Page 8

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 8 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier (1) Where: f osc = oscillator frequency (Hz) Rosc = oscillator resistor (on pin OSCREF) ( Ω ) T able 5 summarizes ho w to configure the TD A8932B in master or slav e configuration. [...]

  • Page 9

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 9 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 8.4.1 Thermal Foldback (TF) If the junction temperature of the TD A8932B e xceeds the threshold lev el (T j > 140 ° C) the gain of the amplifier is decreased gradually to a le v el[...]

  • Page 10

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 10 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier • When the amplifier is completely shut down due to activ ation of the OCP because a shor t-circuit to one of the supply lines is made, then during restar t (after 100 ms) the windo[...]

  • Page 11

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 11 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 8.5 Diagnostic input and output Whene ver a protection is triggered, e xcept for TF , pin DIAG is activ ated to LOW le vel (see T able 6 ). An internal reference supply will pull-up th[...]

  • Page 12

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 12 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier • Pins HVP1 and HVP2: The time required f or charging the SE capacitor depends on its v alue. The half supply voltage output is disab led when the TD A8932B is used in a symmetrical [...]

  • Page 13

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 13 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 5 ENGA GE 6 PO WERUP 7 CGND 8V DD A T able 7. Internal circuitry (Continued) Pin Symbol Equiv alent circuit 001aaf608 100 k Ω ± 20 % 2 k Ω ± 20 % I ref = 50 µ A 2.8 V 5 V SSA V [...]

  • Page 14

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 14 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 9V SSA 10 OSCREF 11 HVPREF 13 TEST 18 DREF T able 7. Internal circuitry (Continued) Pin Symbol Equiv alent circuit 001aad791 9 V SSD V DDA 001aad792 10 V SSA V DDA I ref 001aaf604 11 V[...]

  • Page 15

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 15 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 19 HVP2 30 HVP1 20 V DDP2 23 V SSP2 26 V SSP1 29 V DDP1 21 BOO T2 28 BOO T1 22 OUT2 27 OUT1 24 ST AB2 25 ST AB1 31 OSCIO T able 7. Internal circuitry (Continued) Pin Symbol Equiv alent[...]

  • Page 16

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 16 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 10. Limiting v alues [1] V P = V DDP1 − V SSP1 = V DDP2 − V SSP2 . [2] Measured with respect to pin INREF; V x < V DD + 0.3 V . [3] Measured with respect to pin V SSD(HW) ; V x [...]

  • Page 17

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 17 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier [1] Measured on a JEDEC high K-factor test board (standard EIA/JESD 51-7) in free air with natur al conv ection. [2] T wo la yer application board (55 mm × 45 mm), 35 µ m copper , FR[...]

  • Page 18

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 18 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier Diagnostic output: pin DIA G [1] V O output voltage protection activ ated; see T able 6 - - 0.8 V Operating mode 2 2.5 3.3 V Bias v oltage for inputs: pin INREF V O(bias) bias output v[...]

  • Page 19

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 19 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier [1] Measured with respect to pin CGND . [2] Measured with respect to pin V SSD(HW) . 13. Dynamic characteristics T act(th_fold) thermal f oldback activ ation temperature 140 - 150 ° C[...]

  • Page 20

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 20 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier [1] R s is the series resistance of inductor and capacitor of low-pass LC filter in the application. [2] THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17 brick wall. [3] Max[...]

  • Page 21

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 21 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier [1] R s is the series resistance of inductor and capacitor of low-pass LC filter in the application. [2] THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17 brick wall. [3] Max[...]

  • Page 22

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 22 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 14. Application inf ormation 14.1 Output power estimation The output power P o at THD+N = 0.5 %, just bef ore clipping, for the SE and BTL configuration can be estimated using Equatio[...]

  • Page 23

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 23 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier a. THD+N = 0.5 % b . THD+N = 10 % Fig 8. SE output power as a function of suppl y voltage V P (V) 10 40 30 20 20 10 30 40 P o (W) 0 R L = 4 Ω 6 Ω 8 Ω 001aad768 V P (V) 10 40 30 2[...]

  • Page 24

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 24 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 14.2 Output current limiting The peak output current I O(max) is internally limited above a le v el of 4 A (minimum). During nor mal operation the output current should not e xceed thi[...]

  • Page 25

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 25 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier The 3 dB cut-off frequency is equal to: (7) Where: f -3dB = 3 dB cut-off frequency (Hz) R L = load impedance ( Ω ) Cse = single-ended capacitance (F); see Figure 36 T able 15 sho ws [...]

  • Page 26

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 26 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier (9) Where: R EQ = equiv alent resistance ( Ω) R3 = parallel resistor ( Ω ) Z i = internal input impedance ( Ω ) Example: Substituting R1 = R2 = 4.7 k Ω ,Z i = 100 k Ω a n dR [...]

  • Page 27

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 27 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier The HTSSOP32 package has an e xposed die-pad that reduces significantly the over all R th(j-a) . Theref ore it is required to solder the exposed die-pad (at V SSD le vel) to a copper [...]

  • Page 28

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 28 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier Fig 12. SE application for reducing pumping eff ects 001aad763 IN1P OUT1 audio in1 IN1N IN2N audio in2 IN2P OUT2[...]

  • Page 29

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 29 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 14.9 SE curves measured in reference design a. V P =2 2V ; R L =2 × 4 Ω b. V P =3 0V ; R L =2 × 8 Ω (1) f i = 6 kHz (2) f i = 100 Hz (3) f i = 1 kHz Fig 13. T otal harmonic disto[...]

  • Page 30

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 30 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier V i = 100 mV (RMS); R i =0 Ω ; Cse = 1000 µ F (1) V P = 30 V; R L =2 × 8 Ω (2) V P = 22 V; R L =2 × 4 Ω V ripple = 500 mV (RMS) referenced to ground; R i =0 Ω (shor ted inpu[...]

  • Page 31

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 31 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier f i = 1 kHz (shor t time P O ); dashed line will require heat sink for contin uous time output power (1) R L =2 × 4 Ω ; THD+N = 10 % (2) R L =2 × 4 Ω ; THD+N = 0.5 % (3) R L =2 ?[...]

  • Page 32

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 32 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier a. R L =2 × 4 Ω ; f i = 1 kHz; 2 la yer SO32 application board (55 mm × 45 mm) without heat sink b. R L =2 × 8 Ω ; f i = 1 kHz; 2 la yer SO32 application board (55 mm × 45 mm) [...]

  • Page 33

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 33 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 14.10 BTL curves measured in reference design a. V P =1 2V ; R L =4 Ω b. V P =2 2V ; R L =8 Ω (1) f i = 6 kHz (2) f i = 1 kHz (3) f i = 100 Hz Fig 26. T otal harmonic distortion-pl[...]

  • Page 34

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 34 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier V i = 100 mV (RMS); R i =0 Ω (1) V P = 12 V; R L =4 Ω (2) V P = 22 V; R L =8 Ω V ripple = 500 mV (RMS) referenced to ground; R i =0 Ω (shor ted input) (1) V P =2 2V ; R L =8 ?[...]

  • Page 35

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 35 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier a. R L =4 Ω ; f i = 1 kHz; 2 la yer SO32 application board (55 mm × 45 mm) without heat sink b. R L =8 Ω ; f i = 1 kHz; 2 la yer SO32 application board (55 mm × 45 mm) without he[...]

  • Page 36

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 36 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier f i = 1 kHz; power dissipation in junction only; short time P o at THD+N = 10 %; dashed line will require heat sink for continuous time output pow er (1) R L =4 Ω (2) R L = 8 Ω Fig[...]

  • Page 37

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 37 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 14.11 T ypical application schematics (simplified) Fig 36. T ypical simplified application diagram for 2 × SE (asymmetrical supply) U1 TD A8932B V SSD(HW) 470 nF Cin Cen 470 nF Chvp[...]

  • Page 38

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 38 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier Fig 37. T ypical simplified application diagram for 1 × BTL (asymmetrical supply) U1 TD A8932B V SSD(HW) 1 µ F Cin Cen 470 nF Chvp 100 nF Cvddp 100 nF Csn 470 pF Csn 470 pF Rsn 10 ?[...]

  • Page 39

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 39 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier Fig 38. T ypical simplified application diagram for 2 × SE (symmetrical supply) U1 TD A8932B V SSD(HW) 470 nF Cin Cen 470 nF Cvddp 100 nF Csn 470 pF Csn 470 pF Rsn 10 Ω Rsn 10 Ω [...]

  • Page 40

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 40 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 15. T est information 15.1 Quality information The General Quality Specification f or Integrated Circuits , SNW -FQ-611 is applicable . Fig 39. T ypical simplified application diagra[...]

  • Page 41

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 41 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 16. P ac kage outline Fig 40. P ackage outline SO T287-1 (SO32) UNIT A max. A 1 A 2 A 3 b p cD (1) E (1) eH E LL p QZ y w v θ REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE[...]

  • Page 42

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 42 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier Fig 41. P ackage outline SO T549-1 (HTSSOP32) UNIT A 1 A 2 A 3 b p cD (1) E (2) eH E LL p Z y w v θ REFERENCES OUTLINE VERSION EUROPEAN PROJECTION ISSUE DATE IEC JEDEC JEITA mm 0.15 0[...]

  • Page 43

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 43 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 17. Soldering This te xt provides a v er y brief insight into a complex technology . A more in-depth account of soldering ICs can be found in Application Note AN10365 “Surf ace mount[...]

  • Page 44

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 44 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 17.4 Reflow soldering K ey char acter istics in reflo w solder ing are: • Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to higher minimum pea[...]

  • Page 45

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03— 21 June 2007 45 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier F or fur ther information on temperature profiles, ref er to Application Note AN10365 “Surf ace mount reflow soldering description” . 18. Abbreviations MSL: Moisture Sensitivity [...]

  • Page 46

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03 — 21 June 2007 46 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 19. Revision history T able 19. Revision history Document ID Release date Data sheet status Change notice Supersedes TD A8932B_3 20070621 Product data sheet - TD A8932B_2 Modificatio[...]

  • Page 47

    TDA8932B_3 © NXP B.V . 21 June 2007. All rights reserved. Product data sheet Rev . 03 — 21 June 2007 47 of 48 NXP Semiconductors TD A8932B Class-D audio amplifier 20. Legal inf ormation 20.1 Data sheet status [1] Please consult the most recently issued document before initiating or completing a design. [2] The ter m ‘short data sheet’ is ex[...]

  • Page 48

    NXP Semiconductors TD A8932B Class-D audio amplifier © NXP B.V . 21 June 2007. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 21 June 2007 Document identifier: TDA8932B_3 Please be aware that important notices concerning this [...]