IRS20124S データシートの表示（PDF） - International Rectifier

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IRS20124S

DIGITAL AUDIO DRIVER WITHDISCRETE DEAD-TIME AND PROTECTION

International Rectifier 

IRS20124S(PbF)

Description

The IRS20124S is a high voltage, high speed power MOSFET driver with internal dead-time and shutdown

functions specially designed for Class D audio amplifier applications.

The internal dead time generation block provides accurate gate switch timing and enables tight dead-time

settings for better THD performances.

In order to maximize other audio performance characteristics, all switching times are designed for immunity

from external disturbances such as VCC perturbation and incoming switching noise on the DT pin. Logic

inputs are compatible with LSTTL output or standard CMOS down to 3.0V without speed degradation. The

output drivers feature high current buffers capable of sourcing 1.0A and sinking 1.2A. Internal delays are

optimized to achieve minimal dead-time variations. Proprietary HVIC and latch immune CMOS technologies

guarantee operation down to Vs= –4V, providing outstanding capabilities of latch and surge immunities with

rugged monolithic construction.

Absolute Maximum Ratings

Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters

are absolute voltages referenced to COM. All currents are defined positive into any lead. The thermal resistance and power

dissipation ratings are measured under board mounted and still air conditions.

Symbol

VB

Vs

VHO

VCC

VLO

VIN

VOC

VOCSET1

VOCSET2

dVs/dt

Pd

RthJA

TJ

TS

TL

Definition

High side floating supply voltage

High side floating supply voltage

High side floating output voltage

Low side fixed supply voltage

Low side output voltage

Input voltage

OC pin input voltage

OCSET1 pin input voltage

OCSET2 pin input voltage

Allowable Vs voltage slew rate

Maximum power dissipation

Thermal resistance, Junction to ambient

Junction Temperature

Storage Temperature

Lead temperature (Soldering, 10 seconds)

Min.

-0.3

VB-20

Vs-0.3

-0.3

-0.3

-0.3

-0.3

-0.3

-0.3

-

-

-

-

-55

-

Max.

220

VB+0.3

VB+0.3

20

Vcc+0.3

Vcc+0.3

Vcc+0.3

Vcc+0.3

Vcc+0.3

50

1.25

100

150

150

300

Units

V

V

V

V

V

V

V

V

V

V/ns

W

°C/W

°C

°C

°C

2

www.irf.com

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