IR2154 Просмотр технического описания (PDF) - International Rectifier

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IR2154

SELF-OSCILLATING HALF-BRIDGE DRIVER

International Rectifier 

Preliminary Data Sheet No. PD60063I

IR2154

SELF-OSCILLATING HALF-BRIDGE DRIVER

Features

• Integrated 600V half-bridge gate driver

• 15.6V zener clamp on Vcc

• True micropower start up

• Tighter initial deadtime control

• Low temperature coefficient deadtime

• Shutdown feature (1/6th Vcc) on CT pin

• Increased undervoltage lockout Hysteresis (1V)

• Lower power level-shifting circuit

• Constant LO, HO pulse widths at startup

• Lower di/dt gate driver for better noise immunity

• High side output in phase with RT

• Excellent latch immunity on all inputs and outputs

• ESD protection on all leads

Product Summary

VOFFSET

Duty Cycle

Tr/Tp

Vclamp

Deadtime (typ.)

600V max.

50%

80/40ns

15.6V

1.2 µs

Packages

Description

The IR2154 is an improved version of the popular

IR2152 gate driver IC, and incorporates a high voltage

half-bridge gate driver with a front end oscillator simi-

lar to the industry standard CMOS 555 timer. The

IR2154 provides more functionality and is easier to use

than previous ICs. A shutdown feature has been de-

signed into the CT pin, so that both gate driver outputs

can be disabled using a low voltage control signal. In

addition, the gate driver output pulse widths are the

same once the rising undervoltage lockout threshold

on VCC has been reached, resulting in a more stable

profile of frequency vs time at startup. Noise immu-

nity has been improved significantly, both by lowering

the peak di/dt of the gate drivers, and by increasing the

undervoltage lockout hysteresis to 1V. Finally, special

attention has been payed to maximizing the latch

immunity of the device, and providing comprehensive

ESD protection on all pins.

8 Lead PDIP

Typical Connection

VCC VB

HO

RT

VS

8 Lead SOIC

600V

MAX

Shutdown

CT

LO

COM

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