TFA9815
1. General description
The TFA9815 is a 2-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 audio amplifier system or
open-loop system can be built. The continuous output power is 2 ´17 W in a full-bridge
BTL application. The TFA9815 does not require a heat sink and operates using an
asymmetrical supply voltage.
2. Features
n Stereo full-bridge audio amplifier for class D 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
