irs20954s International Rectifier Corp., irs20954s Datasheet

irs20954s

Manufacturer Part Number

irs20954s

Description

Protected Digital Audio Driver

Manufacturer

International Rectifier Corp.

Datasheet

1.IRS20954S.pdf (25 pages)

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Typical Connection

Features

Description

The IRS20954 is a high voltage, high speed MOSFET driver

with floating PWM input, specially designed for Class D audio

amplifier applications. The bi-directional current sensing

requires no external shunt resistors. It can capture over-current

conditions at either positive or negative load current direction. A

built-in control block provides secure protection sequence

against over-current conditions, including a programmable reset

timer.

accurate gate switch timing and enables optimum deadtime

settings for better audio performances, such as THD and audio

noise floor.

(Please refer to Lead

Assignments for correct

pin configuration. This

diagram shows

electrical connections

only)

Floating PWM input enables easy half bridge

implementation

Integrated programmable bi-directional over-current

protection with self-reset function

Programmable compensated preset deadtime for

improved THD performances

High noise immunity

power

3.3 V / 5 V logic compatible input

Operates up to 800 kHz

RoHS compliant

100 V high voltage ratings deliver up to 500 W output

The internal deadtime generation block provides

PWM

CSD

VDD

VSS

VREF

OCSET

IRS 20954 S

COM

CSH

VCC

Protected Digital Audio Driver

Product Summary

Package

Gate driver

Selectable Deadtime

Propagation delay

OC protection delay

OFFSET

(max)

16-Lead SOIC (narrow body

Data Sheet No. PD60276

IRS20954S

Io+

Io -

12 V

Vcc

-B

1.0 A

1.2 A

15 ns, 25 ns,

35 ns, 45 ns

90 ns

1 µs (max)

100 V

)

Speaker

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