www.irf.com © 2008 International Rectifier
1
IRS20957S
Protected Digital Audio Driver
Features
• Floating PWM input enables easy half bridge
implementation
• Programmable bidirectional over-current protection with
self-reset function
• Programmable preset dead-time for improved THD
performances
• High noise immunity
• ±100V ratings deliver up to 500W in output power
• 3.3 V/ 5 V logic compatible input
• Operates up to 800kHz
Typical Applications
• Home theatre systems
• Mini component stereo systems
• Powered speaker systems
• General purpose audio power amplifiers
Product Summary
Topology Half-Bridge
V
OFFSET (max)
+/- 100 V
I
O+
& I
O-
(typical) 1.0 A & 1.2 A
Selectable deadtime 15/25/35/80ns
Ton & toff (typical) 95ns & 80ns
OC protection delay 500ns (max)
Shutdown
propagation delay
250ns (max)
Package
Typical Connection Diagram
Note: Please refer to Lead Assignments for correct pin configuration. This diagram shows
electrical connections only.
March 5, 2009
Datasheet No – PD97381
