IRS20955STRPBF electronic devices and integrated circuits PROTECTED DIGITAL AUDIO DRIVER
PROTECTED DIGITAL AUDIO DRIVER
Features
· Floating PWM input enables easy half-bridge implementation
· Programmable bidirectional over-current protection
with self-reset function
· Programmable preset deadtime for improved THD performances
· High noise immunity · ±100 V ratings deliver
up to 500 W in output power
· 3.3 V/5 V logic compatible input
· Operates up to 800 kHz
· RoHS compliant
Description
The IRS20955 is a high voltage, high speed MOSFET driver with a floating PWM input designed for Class D audio amplifier applications.
Bi-directional current sensing detects over-current conditions during positive and negative load currents without any external shunt resistors. A built-in protection control block provides a secure protection sequence against overcurrent conditions and a programmable reset timer.
The internal deadtime generation block enables accurate gate switching and optimum deadtime setting for better audio performance, such as lower THD and lower audio noise floor.
| VOFFSET (max) | ± 100 V |
|
Gate driver Io+ Io- |
1.0 A 1.2 A |
| Selectable deadtime |
15 ns, 25 ns 35 ns, 45ns |
| Propagation delay | 90 ns |
| OC protection delay | 500 ns (max) |
| Shutdown propagation delay | 250 ns (max) |
Typical Connection
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