NXP Semiconductors TFA9810 Product Data Sheet

1. General description

2. Features

3. Applications

4. Quick reference data

TFA9810
Stereo full-bridge audio amplifier 2 x 12 W
Rev. 03 — 20 February 2008
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.
I
Stereo full-bridge power comparator for class D audio amplifier applications
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No external heat sink required
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Operating voltage range: asymmetrical from 8 V to 20 V
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Thermally protected
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Zero dead-time switching
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Current-limiting (no audible interruptions)
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Self-oscillating or open-loop class D audio amplifier applications
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Flat-panel television sets
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Flat-panel monitors
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Multimedia systems
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Wireless speakers
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High-end CRT television sets
Table 1. Quick reference data
T = 25 C; V = 12 V; f
amb P
Symbol Parameter
V supply voltage
P
I off-state current
off
I quiescent current
q
output power
po
efficiency
= 550 kHz; Figure 33
osc
Condition
V = V
P DDPx
off mode
with load, filter and
snubbers connected
output power
2 x 9 W into 8 ;
P = P
o o(nom)
unless otherwise specified
Min
V 8
SSPx
-
-
87
Product data sheet
Typ Max Unit
12 20 V
110 200 A
35 45 mA
89 - %