IR6226

Preliminary Data Sheet 6.051

INTELLIGENT HIGH SIDE MOSFET POWER SWITCH

General Description:

The IR6226 is a 5 terminal monolithic HIGH SIDE SWITCH

with built in short circuit, over- temperature, ESD, inductive load

turn off capability and diagnostic feedback.

The on-chip protection circuit goes into PWM mode, limiting the

average current during short circuit if the drain current exceeds

5A. The protection circuit latches off the high side switch if the

junction temperature exceeds 170°C and latches on after the junc-

tion temperature falls by 10°C. The drain to source voltage is

actively clamped at 55V, improving its performance during turn

off with inductive loads.

The on-chip charge pump high side driver stage is floating and ref-

erenced to the source of the power MOSFET. Thus the logic to

power ground isolation can be as high as 50V. This allows opera-

tion with larger offset as well as controlling the switch during

load energy recirculation or regeneration.

A diagnostic pin is provided for status feedback of short circuit,

over temperature and open load detection.

Applications

•

Solenoid Driver

•

DC Motor Driver

5v-50v

20A

170°C

200mJ

Condition

In

Out

Dg

Normal

H

H

H

Normal

L

L

L

OutputOpen

H

H

H

OutputOpen

L

H

H

ShortedOutput

H Current-Limiting

L

ShortedOutput

L

L

L

Over-Temperature

H

L

L

Over-Temperature

L

L

L

Truth Table

Available Packages

Block Diagram

IR6226

TO-220

(5-lead)

Features

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