tfa9810t-n1

Manufacturer Part Numbertfa9810t-n1
DescriptionTfa9810 Stereo Full-bridge Audio Amplifier 2 X 12 W
ManufacturerNXP Semiconductors
tfa9810t-n1 datasheet
 
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TFA9810
Stereo full-bridge audio amplifier 2 x 12 W
Rev. 02 — 30 August 2007
1. General description
The TFA9810 is a two-channel power comparator for high-efficiency class D audio
amplifier systems. It contains two full-bridge Bridge-Tied Load (BTL) power stages, drive
logic, protection control logic and full differential input comparators. By using this power
comparator a compact closed-loop self-oscillating digital amplifier system or open-loop
system can be built. The TFA9810 does not require a heat sink and operates using an
asymmetrical supply voltage.
2. Features
I
Stereo full-bridge power comparator for class D audio amplifier applications
I
No external heat sink required
I
Operating voltage range: asymmetrical from 8 V to 20 V
I
Thermally protected
I
Zero dead-time switching
I
Current-limiting (no audible interruptions)
3. Applications
I
Self-oscillating or open-loop class D audio amplifier applications
I
Flat-panel television sets
I
Flat-panel monitors
I
Multimedia systems
I
Wireless speakers
I
High-end CRT television sets
4. Quick reference data
Table 1.
T
= 25 C; V
amb
Symbol
V
P
I
off
I
q
po
Quick reference data
= 12 V; f
= 550 kHz;
Figure 33
P
osc
Parameter
Condition
supply voltage
V
= V
P
DDPx
off-state current
Off mode
quiescent current
With load, filter and
snubbers connected
output power
Output power
efficiency
2 x 9 W into 8 ;
P
= P
o
o(nom)
Preliminary data sheet
unless otherwise specified
Min
Typ
V
8
12
SSPx
-
110
-
35
87
89
Max
Unit
20
V
200
A
45
mA
-
%

tfa9810t-n1 Summary of contents

  • Page 1

    TFA9810 Stereo full-bridge audio amplifi Rev. 02 — 30 August 2007 1. General description The TFA9810 is a two-channel power comparator for high-efficiency class D audio amplifier systems. It contains two full-bridge Bridge-Tied Load (BTL) power ...

  • Page 2

    ... NXP Semiconductors Table amb Symbol P o(RMS Ordering information Table 2. Ordering information Type number Package Name TFA9810T SO32 TFA9810_2 Preliminary data sheet Quick reference data …continued = 550 kHz; Figure 33 P osc Parameter Condition continuous RMS output power per 12 V ...

  • Page 3

    ... NXP Semiconductors 6. Block diagram TFA9810 V DDA1 4 IN1P 2 COMPARATOR 1 IN1N SSA1 10 DIAG PROTECTION OVP UVP OCP OTP ODP TEST 11 WP SO/OL 6 REFERENCE ENABLE 7 CDELAY DDA2 IN2P 15 COMPARATOR 2 IN2N SSA2 Fig 1. Block diagram TFA9810_2 Preliminary data sheet DRIVER HIGH CONTROL LOGIC ...

  • Page 4

    ... NXP Semiconductors 7. Pinning information 7.1 Pinning Fig 2. Pin configuration The SO32 package has four corner leads. These leads (1, 16, 17, and 32) are internally connected to the die pad and must be connected to V the applied copper area on the Printed Circuit Board (PCB) these leads determine the ambient temperature, which affects the thermal resistance of the junction ...

  • Page 5

    ... NXP Semiconductors Table 3. Symbol IN2N IN2P STAB2 V SSP2 BOOT2N OUT2N BOOT2P OUT2P V DDP2 V DDP1 OUT1P BOOT1P OUT1N BOOT1N V SSP1 STAB1 8. Functional description 8.1 General The TFA9810 is a dual-switching power comparator the main building block for a stereo high-efficiency Class D audio power amplifier system. It contains two full-bridge ...

  • Page 6

    ... NXP Semiconductors In SLEEP mode the TFA9810 is not biased and has a very low supply current. When the TFA9810 is set into OPERATING mode the device is started via the start-up sequence, which provides a pop-free start-up behavior. After start-up the reference voltages STAB are present and the outputs start switching. ...

  • Page 7

    ... NXP Semiconductors • OverVoltage Protection (OVP) When the supply voltage applied to the TFA9810 exceeds the maximum supply voltage threshold level the device will shut down. The device will restart when the supply voltage is within the operating range. • UnderVoltage Protection (UVP) When the supply voltage applied to the TFA9810 falls below the minimum supply voltage threshold level the device will shut down ...

  • Page 8

    ... NXP Semiconductors 8.6 Start-up sequence V P ENABLE STAB1 CDELAY FLOATING OUT x AUDIO DIAG SLEEP START-UP Fig 3. Start-up sequence 9. Internal circuitry Fig 4. Internal circuitry 0001 TFA9810_2 Preliminary data sheet FLOATING PWM AUDIO OPERATING FAULT RESTART 1,16, 17, 32 Rev. 02 — 30 August 2007 TFA9810 Audio amplifi ...

  • Page 9

    ... NXP Semiconductors Fig 5. Internal circuitry 0002 Fig 6. Internal circuitry 0003 Fig 7. Internal circuitry 0004 TFA9810_2 Preliminary data sheet 2 135 k 5 hvp SSA 135 k 5 010aaa026 V V DDA1 110 SSA1 V Rev. 02 — 30 August 2007 TFA9810 Audio amplifi ...

  • Page 10

    ... NXP Semiconductors Fig 8. Internal circuitry 0005 Fig 9. Internal circuitry 0006 Fig 10. Internal circuitry 0007 TFA9810_2 Preliminary data sheet V DDA1 DDA1 200 nA V DDA1 10 V SSA1 Rev. 02 — 30 August 2007 TFA9810 Audio amplifi 250 nA V SSA ...

  • Page 11

    ... NXP Semiconductors Fig 11. Internal circuitry 0008 Fig 12. Internal circuitry 0009 Fig 13. Internal circuitry 0010 Fig 14. Internal circuitry 0011 TFA9810_2 Preliminary data sheet V DDA1 130 k hvp V SSA2 130 DDA2 100 SSD 010aaa034 Rev. 02 — 30 August 2007 TFA9810 Audio amplifi ...

  • Page 12

    ... NXP Semiconductors Fig 15. Internal circuitry 0012 Fig 16. Internal circuitry 0013 Fig 17. Internal circuitry 0014 Fig 18. Internal circuitry 0015 TFA9810_2 Preliminary data sheet 24 23 010aaa035 OUT2N 010aaa036 V DDP2 21 V SSP2 010aaa037 OUT2P 010aaa038 Rev. 02 — 30 August 2007 TFA9810 Audio amplifi © ...

  • Page 13

    ... NXP Semiconductors Fig 19. Internal circuitry 0016 Fig 20. Internal circuitry 0017 Fig 21. Internal circuitry 0018 Fig 22. Internal circuitry 0019 TFA9810_2 Preliminary data sheet V DDP2 23 V SSP2 010aaa039 25 23 010aaa040 V DDP1 26 V SSP1 010aaa041 Rev. 02 — 30 August 2007 TFA9810 Audio amplifi © ...

  • Page 14

    ... NXP Semiconductors Fig 23. Internal circuitry 0020 Fig 24. Internal circuitry 0021 Fig 25. Internal circuitry 0022 10. Limiting values Table 7. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter ORM stg T amb P max TFA9810_2 Preliminary data sheet DDA1 ...

  • Page 15

    ... NXP Semiconductors Table 7. In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter esd 11. Thermal characteristics Table 8. Characteristics Symbol Parameter R thermal resistance th(j-a) from junction to ambient thermal j-lead characterization parameter from junction to lead thermal j-top characterization parameter from junction to top of ...

  • Page 16

    ... NXP Semiconductors Table 9. Static characteristics 550 kHz; amb P osc Symbol Parameter I input current I SO/OL input V LOW-level input voltage IL V HIGH-level input voltage with respect STABI V voltage on pin STABI STABI Comparator full-differential input stage V equivalent input offset offset(i)(eq) voltage ...

  • Page 17

    ... NXP Semiconductors 12.2 Dynamic characteristics Table 10. Dynamic characteristics amb P L Symbol Parameter PWM Output t rise time r t fall time f t response time resp t minimum pulse width w(min) R drain-source on-state DSon resistance output power po efficiency [1] High-side and low-side power switch have the same series resistance. ...

  • Page 18

    ... NXP Semiconductors Table 11. AC characteristics measured in typical application amb P L Symbol Parameter THD+N total harmonic distortion-plus-noise output power po efficiency G closed-loop voltage v(cl) gain V noise output voltage n(o) S/N signal-to-noise ratio SVRR supply voltage ripple rejection channel separation cs [1] Minimum value determined by R5, R10, R17, R22 equalling +1 % and R7, R14, R18, R20 equalling 1 %. 13. Quality specifi ...

  • Page 19

    ... NXP Semiconductors P o (W) Fig 26. BTL output power as function of supply voltage: THD = 0 (W) Fig 27. BTL output power as function of supply voltage: THD = TFA9810_2 Preliminary data sheet ( ( ( ( ( (1) R ...

  • Page 20

    ... NXP Semiconductors 14.2 Output current limiting The peak output current is internally limited above a level minimum. During normal operation the output current should not exceed this threshold level otherwise the output signal will be distorted. The peak output current in BTL can be estimated using ...

  • Page 21

    ... NXP Semiconductors Fig 28. Input configuration for differential input 14.5 Single-ended input When using an audio source with a single-ended ‘out’ important to connect the IN1N from the application board to the VSS/GND of the audio source (e.g. Audio DSP). The input configuration for single-ended ‘in’ application is illustrated in Fig 29. Input confi ...

  • Page 22

    ... NXP Semiconductors 14.6 Curves measured in a typical application G (dB) Fig 30. Gain as a function of frequency THD+N Fig 31. Total harmonic distortion + noise as a function of frequency TFA9810_2 Preliminary data sheet +30 v +25 +20 (1) (2) +15 + 100 (1) OUT1 (2) OUT2 10 (%) ...

  • Page 23

    ... NXP Semiconductors THD+N Fig 32. Total harmonic distortion as a function of output power 14.7 Typical application diagram TFA9810 The typical application diagram with the TFA9810 supplied from an asymmetrical supply is shown in TFA9810_2 Preliminary data sheet 10 (%) kHz ...

  • Page 24

    C32 C33 220 F 100 100 nF GND GND OUT1 GND R5 100 R31 IN1P IN1 ...

  • Page 25

    ... 0. 100 for 20 dB 200 for 0 PCB switch TFA9810T Snubber network: bill of materials Quantity Reference 4 C27, C28, C29, C30 470 pF R27, R28, R29, R30 Rev. 02 — 30 August 2007 Audio amplifi ...

  • Page 26

    ... NXP Semiconductors 16. Package outline SO32: plastic small outline package; 32 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. 0.3 2.45 mm 2.65 0.25 0.1 2.25 0.012 0.096 inches 0.1 0.01 0.004 0.089 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. ...

  • Page 27

    ... NXP Semiconductors 17. Revision history Table 15. Revision history Document ID Release date TFA9810_2 20070830 • Modifications: Added legal statement on “Right to make changes” in TFA9810_1 20070815 TFA9810_2 Preliminary data sheet Data sheet status Change notice Preliminary data sheet - Preliminary data sheet - Rev. 02 — 30 August 2007 TFA9810 Audio amplifi ...

  • Page 28

    ... For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail ...

  • Page 29

    ... NXP Semiconductors 20. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Quick reference data . . . . . . . . . . . . . . . . . . . . . 1 5 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 6 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Pinning information . . . . . . . . . . . . . . . . . . . . . . 4 7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 8 Functional description . . . . . . . . . . . . . . . . . . . 5 8.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8.2 Interfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8.3 Input comparators 8.3.1 Operating in self-oscillating configuration . . . . . 6 8.3.2 Operating in open-loop configuration . . . . . . . . 6 8.4 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8 ...