TDA8954

Manufacturer Part NumberTDA8954
DescriptionThe TDA8954 is a stereo or mono high–efficiency Class D audio power amplifier in asingle IC featuring low power dissipation
ManufacturerNXP Semiconductors
TDA8954 datasheet
 
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TDA8954
2 × 210 W class-D power amplifier
Rev. 01 — 24 December 2009
1. General description
The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a
single IC featuring low power dissipation. It is designed to deliver up to 2 × 210 W into a
4 Ω load in a stereo Single-Ended (SE) application, or 1 × 420 W into an 8 Ω load in a
mono Bridge-Tied Load (BTL) application.
It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile
sound quality comparable to that associated with Class AB amplification.
The amplifier operates over a wide supply voltage range from ±12.5 V to ±42.5 V and
features low quiescent current consumption.
The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal
Fold Back (TFB), Over Current Protection (OCP) and other protection circuits.
2. Features
High output power in typical applications:
SE 2 × 210 W, R
SE 2 × 235 W, R
SE 2 × 150 W, R
BTL 1 × 420 W, R
Symmetrical operating supply voltage range from ±12.5 V to ±42.5 V
Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier
Low noise
Smooth pop noise-free start-up and switch off
2-pin diagnostics for protection circuits
Fixed frequency internal or external clock
High efficiency ≈93 %
Zero dead time switching
Low quiescent current
Advanced protection strategy: voltage protection and output current limiting
Thermal FoldBack (TFB) with disable functionality
Fixed gain of 30 dB in SE and 36 dB in BTL applications
Fully short-circuit proof across load
BD modulation in BTL configuration
Clock protection
= 4 Ω (V
= −41 V)
= 41 V; V
L
DD
SS
= 3 Ω (V
= −39 V)
= 39 V; V
L
DD
SS
= 6 Ω (V
= −41 V)
= 41 V; V
L
DD
SS
= 8 Ω (V
= −41 V)
= 41 V; V
L
DD
SS
Product data sheet

TDA8954 Summary of contents

  • Page 1

    ... Rev. 01 — 24 December 2009 1. General description The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a single IC featuring low power dissipation designed to deliver × 210 W into a 4 Ω load in a stereo Single-Ended (SE) application × 420 W into an 8 Ω load in a mono Bridge-Tied Load (BTL) application. It combines the benefits of Class D efficiency (≈ ...

  • Page 2

    ... Ω; THD + Figure 13 − measurement; see Section 14.3. DSon Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Home Theater In A Box (HTIAB) system High-power speaker system Public Address (PA) system Min Typ Max [1] 12.5 41 42.5 −12.5 −41 −42.5 V ...

  • Page 3

    ... MODE MODE 2 (19) SGND mute 5 (22) IN2P INPUT 4 (21) STAGE IN2M 1 (18) 12 (6) VSSA DIAG2 Pin numbers in brackets refer to type number TDA8954J. Fig 1. Block diagram TDA8954_1 Product data sheet STABI PROT 18 (12) 13 (7) PWM SWITCH1 CONTROL MODULATOR AND HANDSHAKE STABI ...

  • Page 4

    ... VSSA 2 SGND 3 VDDA 4 IN2M 5 IN2P 6 MODE 7 OSC 8 IN1P 9 IN1M 10 DIAG1 11 OSCREF 12 DIAG2 010aaa557 Fig 3. Pin configuration TDA8954J Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier OSC 1 2 IN1P 3 IN1M DIAG1 4 OSCREF 5 DIAG2 6 7 PROT 8 VDDP1 BOOT1 9 OUT1 10 VSSP1 11 TDA8954J ...

  • Page 5

    ... VSSA 8. Functional description 8.1 General The TDA8954 is a two-channel audio power amplifier that uses Class D technology. For each channel, the audio input signal is converted into a digital Pulse Width Modulation (PWM) signal using an analog input stage and a PWM modulator; see the output power transistors, the digital PWM signal is fed to a control and handshake block and to high- and low-side driver circuits ...

  • Page 6

    ... Each of the two audio channels contains a PWM modulator, an analog feedback loop and a differential input stage. The TDA8954 also contains circuits common to both channels such as the oscillator, all reference sources, the mode interface and a digital timing manager ...

  • Page 7

    ... V (SGND) 100 ⁄ 1 pulse down. 4 Table 9), but not earlier than 150 ms after switching to Mute. To start-up Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Figure 5. audio output modulated PWM operating time > 350 ms audio output modulated PWM operating time > ...

  • Page 8

    ... NXP Semiconductors 8.2 Diagnostics The TDA8954 provides two diagnostic signals on pins DIAG1 and DIAG2. Both are open-drain outputs that can be pulled up via a resistor (10 kΩ recommended maximum relative to the GND pin. The maximum input current on these pins is 1 mA. Pin DIAG1 provides a TFB warning signal. Pin DIAG2 can be used to monitor the OCP status and the protection status (whether one of the protection circuits has switched off the amplifier) ...

  • Page 9

    ... How the device reacts to a fault condition depends on which protection circuit has been activated. 8.4.1 Thermal protection The TDA8954 employes an advanced thermal protection strategy. A TFB function gradually reduces the output power within a defined temperature range. If the temperature continues to rise, OTP is activated to shut the device down completely. ...

  • Page 10

    ... V LOAD V DIAG1 T T act(th_fold) T act(warn)th_fold < T < act(th_prot) for the TDA8954 is approximately 145 °C; see act(th_fold) (see Figure 8). act(th_prot) . The amplifier will resume switching approximately 100 ms act(th_prot) act(th_prot) Figure Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Thermal foldback activated ...

  • Page 11

    ... Behavior of TFB, OTP and signal on pin DIAG1 8.4.2 OverCurrent Protection (OCP) In order to guarantee the robustness of the TDA8954, the maximum output current delivered at the output stages is limited. OCP is built in for each output power switch. OCP is activated when the current in one of the power transistors exceeds the OCP threshold (I load ...

  • Page 12

    ... C switch-off. C frequency-dependent impedance drops at the speakers. The amplifier will switch on, and remain in Operating mode, once the overcurrent condition has been removed. OCP ensures the TDA8954 amplifier is fully protected against short-circuit conditions while avoiding audio holes. Table 4. Type TDA8954 +41/− ...

  • Page 13

    ... During the start-up sequence, when the TDA8954 is switching from Standby to Mute. Start-up will be interrupted if a short-circuit is detected between one of the output terminals and one of the supply pins. The TDA8954 will wait until the short-circuit to the supply lines has been removed before resuming start-up. The short circuit will not generate large currents because the short-circuit check is carried out before the power stages are enabled ...

  • Page 14

    ... Mono BTL operation: the inputs must be connected in anti-parallel. The output of one channel is inverted and the speaker load is connected between the two outputs of the TDA8954. In practice (because of the OCP threshold) the maximum output power in the BTL configuration can be boosted to twice the maximum output power available in the single-ended configuration ...

  • Page 15

    ... NXP Semiconductors Fig 10. TDA8954_1 Product data sheet IN1P IN1M V in IN2P IN2M Input configuration for mono BTL application Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier OUT1 SGND OUT2 power stage mbl466 © NXP B.V. 2009. All rights reserved ...

  • Page 16

    ... TDA8954_1 Product data sheet [1] Equivalent circuit ( (5) 10 (7) Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 150 μA open: external clock closed: internal clock 010aaa589 2 Ω 010aaa590 SGND 010aaa591 50 μA current limiting OCP 28 μ ...

  • Page 17

    ... VSSP1 18 12 STABI 20 13 VSSP2 21 14 OUT2 22 15 BOOT2 23 16 VDDP2 [1] Pin numbers in brackets are for the TDA8954J TDA8954_1 Product data sheet [1] Equivalent circuit 2 kΩ (22, 2) SGND 2 kΩ (21 (23) SGND (20) 2 (19 (18) Rev. 01 — ...

  • Page 18

    ... C; unless otherwise specified. amb Conditions Operating mode Operating mode Standby, Mute modes − Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Min Max - −55 +150 −40 +85 - 150 0 SGND + 6 ...

  • Page 19

    ... Mute and Operating modes; with respect to VSSA V < 5.5 V MODE V < 5.5 V; gain = 24 dB MODE > 2 × > 2 × DDA SSA SSA DDA Figure 11. Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Min Typ Max Unit - μA - 490 650 [4] ...

  • Page 20

    ... C; unless otherwise specified. Conditions R = 30.0 kΩ OSC HIGH-level [1] [2] from SGND + SGND + 5 V (500 kHz minimum, 1000 kHz maximum) will result in a PWM frequency f track Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 4.2 5.5 6 [V] MODE 010aaa564 Min Typ Max ...

  • Page 21

    ... (RMS) i(CM Ω SE Ω SE Ω BTL measurement; see Section DSon Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier ° [ unless otherwise specified. amb Min Typ Max Unit = 85 °C [ Ω - 160 Ω ...

  • Page 22

    ... Operating mode; inputs shorted Mute mode kHz (RMS (RMS) i(CM) measurement; see Section DSon Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier ° [ unless otherwise specified. amb Min Typ Max Unit [2] = 680 Ω - ...

  • Page 23

    ... DSon hs : output power at the onset of clipping : high-side R of power stage output DMOS (temperature dependent) DSon should be less than 12 A o(peak) Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 2 ) × ( × ) – – 0 min ...

  • Page 24

    ... The noise generated by the internal oscillator is supply voltage dependent. An external low-noise oscillator is recommended for low-noise applications running at high supply voltages. 14.5 Heatsink requirements An external heatsink must be connected to the TDA8954. Equation 5 of TFB and total thermal resistance from junction to ambient. TDA8954_1 Product data sheet ...

  • Page 25

    ... NXP Semiconductors – Power dissipation (P) is determined by the efficiency of the TDA8954. (1) R (2) R (3) R (4) R (5) R Fig 12. Derating curves for power dissipation as a function of maximum ambient temperature In the following example, a heatsink calculation is made for an 4 Ω SE application with a ±30 V supply: The audio signal has a crest factor of 10 (the ratio between peak power and average power (20 dB) ...

  • Page 26

    ... Amplifier malfunction due to the pumping effect can trigger UVP, OVP or UBP. The most effective way to avoid pumping effects is to connect the TDA8954 in a mono full-bridge configuration. In the case of stereo single-ended applications advised to connect the inputs in anti-phase (see be adapted ...

  • Page 27

    ... control C VDDP1 C VP1 C VSSP1 R PU2 R OSC 10 kΩ 30 kΩ 100 nF 100 nF 100 OUT1 10 BOOT1 9 TDA8954J BOOT2 15 OUT2 VDDP2 C VP2 C VSSP2 (1) C PROT C STAB 100 nF 100 nF 100 nF 470 ...

  • Page 28

    ... NXP Semiconductors 14.8 Curves measured in reference design (demo board TDA8954J) 10 THD+N (%) −1 10 − (1) f (2) f (3) f Fig 14. THD + function of output power, SE configuration with 2 × 4 Ω load 10 THD+N (%) −1 10 − (1) f (2) f (3) f Fig 15. THD + function of output power, SE configuration with 2 × 3 Ω load ...

  • Page 29

    ... SE configuration osc = 100 W. o Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa600 (2) ( (W) 010aaa655 (3) ( (Hz) © NXP B.V. 2009. All rights reserved. ...

  • Page 30

    ... BTL configuration osc = 100 W. o Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa656 (3) ( (Hz) 010aaa629 (3) ( (Hz) © ...

  • Page 31

    ... DD SS osc −39 325 kHz (external 650 kHz oscillator), 2 × 3 Ω SE configuration osc Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa604 (Hz 010aaa605 (Hz) © NXP B.V. 2009. All rights reserved. ...

  • Page 32

    ... SS ( 100 = 1 kHz 325 kHz (external 650 kHz oscillator). i osc = Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa606 (1) (2) ( (W/channel − − −41 V. 010aaa607 (2) (3) 150 200 ...

  • Page 33

    ... Product data sheet 0 12.5 17.5 22 kHz 325 kHz (external 650 kHz oscillator). i osc 0 12.5 17.5 22 kHz 325 kHz (external 650 kHz oscillator). i osc Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa608 (1) (2) (3) (4) 27.5 32.5 37.5 Vp ±(V) 010aaa609 (1) (2) 27.5 32.5 37.5 Vp ±(V) © NXP B.V. 2009. All rights reserved. ...

  • Page 34

    ... μ 680 nF (1) ( − (p-p), 2 × 4 Ω SE configuration ripple Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa610 (1) (2) ( (Hz) = 100 mV − − − ...

  • Page 35

    ... V (p-p), 2 × 4 Ω SE configuration ripple − 100 mV osc Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa612 (Hz) SS 010aaa657 (V) MODE = 325 kHz (external 650 kHz oscillator), f © NXP B.V. 2009. All rights reserved. ...

  • Page 36

    ... osc − 325 kHz (external 650 kHz oscillator osc Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa614 (Hz (RMS). i 010aaa615 (Hz (RMS) ...

  • Page 37

    ... osc 0 0 100 200 = − 325 kHz (external 650 kHz oscillator), 2 × 4 Ω SE configuration = osc Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier 010aaa630 (1) 300 400 500 T (sec) 010aaa631 (3) (1) (4) (2) 300 400 ...

  • Page 38

    ... 12.2 10.15 6.2 1. 2.54 1.27 5.08 11.8 9.85 5.8 1.65 REFERENCES JEDEC JEITA Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier view B: mounting base side ...

  • Page 39

    ... scale (2) ( 16.0 13.0 1.1 11.1 6.2 2.9 1 15.8 12.6 0.9 10.9 5.8 2.5 REFERENCES JEDEC JEITA Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier detail 14.5 1.1 1.7 0.25 0.25 0.03 0.07 13.9 0.8 1.5 EUROPEAN ISSUE DATE ...

  • Page 40

    ... Solder bath specifications, including temperature and impurities TDA8954_1 Product data sheet 2 × 210 W class-D power amplifier Rev. 01 — 24 December 2009 TDA8954 © NXP B.V. 2009. All rights reserved ...

  • Page 41

    ... Lead-free process (from J-STD-020C) Package reflow temperature (°C) 3 Volume (mm ) < 350 260 260 250 Figure 36. Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Figure 36) than a SnPb process, thus ≥ 350 220 220 350 to 2 000 > 2 000 260 260 250 ...

  • Page 42

    ... TDA8954_1 Product data sheet 2 × 210 W class-D power amplifier maximum peak temperature = MSL limit, damage level minimum peak temperature = minimum soldering temperature Rev. 01 — 24 December 2009 TDA8954 peak temperature time 001aac844 ). If the stg(max) © NXP B.V. 2009. All rights reserved ...

  • Page 43

    ... For PMFP packages hot bar soldering or manual soldering is suitable. TDA8954_1 Product data sheet Suitability of through-hole mount IC packages for dipping and wave soldering Soldering method Dipping - suitable - Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Wave suitable [1] suitable not suitable © NXP B.V. 2009. All rights reserved ...

  • Page 44

    ... NXP Semiconductors 18. Revision history Table 16. Revision history Document ID Release date TDA8954_1 20091224 TDA8954_1 Product data sheet Data sheet status Change notice Product data sheet - Rev. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier Supersedes - © NXP B.V. 2009. All rights reserved ...

  • Page 45

    ... 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. 01 — 24 December 2009 TDA8954 2 × 210 W class-D power amplifier © NXP B.V. 2009. All rights reserved ...

  • Page 46

    ... Single-Ended (SE 14.3.2 Bridge-Tied Load (BTL 14.4 External clock . . . . . . . . . . . . . . . . . . . . . . . . . 24 14.5 Heatsink requirements . . . . . . . . . . . . . . . . . . 24 14.6 Pumping effects . . . . . . . . . . . . . . . . . . . . . . . 26 14.7 Application schematic . . . . . . . . . . . . . . . . . . . 26 14.8 Curves measured in reference design (demo board TDA8954J Package outline . . . . . . . . . . . . . . . . . . . . . . . . 38 16 Soldering of SMD packages . . . . . . . . . . . . . . 40 2 × 210 W class-D power amplifier 16.1 Introduction to soldering 16.2 Wave and reflow soldering 16.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 40 16.4 Reflow soldering ...