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NXP Semiconductors TFA9810 Manuel d'utilisateur

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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
n Stereo full-bridge power comparator for class D audio amplifier applications
n No external heat sink required
n Operating voltage range: asymmetrical from 8 V to 20 V
n Thermally protected
n Zero dead-time switching
n Current-limiting (no audible interruptions)
3. Applications
n Self-oscillating or open-loop class D audio amplifier applications
n Flat-panel television sets
n Flat-panel monitors
n Multimedia systems
n Wireless speakers
n High-end CRT television sets
4. Quick reference data
TFA9810
Stereo full-bridge audio amplifier 2 x 12 W
Rev. 03 — 20 February 2008 Product data sheet
Table 1. Quick reference data
T
amb
= 25
°
C; V
P
= 12 V; f
osc
= 550 kHz; Figure 33 unless otherwise specified
Symbol Parameter Condition Min Typ Max Unit
V
P
supply voltage V
P
= V
DDPx
− V
SSPx
81220V
I
off
off-state current off mode - 110 200 µA
I
q
quiescent current with load, filter and
snubbers connected
-3545mA
η
po
output power
efficiency
output power
2 x 9 W into 8 Ω;
P
o
=P
o(nom)
87 89 - %
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Résumé du contenu

Page 1 - 4. Quick reference data

1. General descriptionThe TFA9810 is a two-channel power comparator for high-efficiency class D audioamplifier systems. It contains two full-bridge Brid

Page 2 - 5. Ordering information

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 10 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WF

Page 3 - 6. Block diagram

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 11 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WF

Page 4 - 7. Pinning information

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 12 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WF

Page 5 - 8. Functional description

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 13 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WF

Page 6 - ENABLE > 3 V OPERATING

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 14 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 7 - • Window Protection (WP)

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 15 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 8 - 9. Internal circuitry

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 16 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W[

Page 9

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 17 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W[

Page 10 - NXP Semiconductors

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 18 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W[

Page 11

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 19 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 12

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 2 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W5.

Page 13

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 20 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W•

Page 14 - 10. Limiting values

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 21 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 15 - 12. Characteristics

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 22 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 16 - 12.2 Dynamic characteristics

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Page 17

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Page 18 - 14. Application information

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 25 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 19 - 14.2 Output current limiting

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 26 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 20 - 010aaa021

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 27 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 21

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 28 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W1

Page 22

NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W© NXP B.V. 2008. All rights reserved.For more information, please visit: http://www.nxp.comFor sales o

Page 23

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 3 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W6.

Page 24

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 4 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W7.

Page 25 - 15. Test information

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 5 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W8.

Page 26 - 16. Package outline

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 6 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WIn

Page 27 - 17. Revision history

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 7 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W•

Page 28 - 19. Contact information

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 8 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 W8.

Page 29 - 20. Contents

TFA9810_3 © NXP B.V. 2008. All rights reserved.Product data sheet Rev. 03 — 20 February 2008 9 of 29NXP SemiconductorsTFA9810Audio amplifier 2 x 12 WFi

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