IR2238Q 데이터 시트보기 (PDF) - Infineon Technologies

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IR2238Q

3-PHASE AC Motor Controller IC

Infineon Technologies 

IR2238Q

Gate Drive Circuit

Block Diagram

Gate

ONE SHOT

UV Detect

3usec

Blanking

Shutdown

Voltage

Feedback

6usec

One Shot

1usec

filter

Figure 2 Driver Output Circuit Block Diagram

Soft Shutdown

Impedence =

500 ohms

8V

VB

HOP

HOQ

HON

DSH

VS

HIN1

LIN1

VFH1

LIN2

LIN3

FAULT

VSS

VCC

SCHMITT

TRIGGER

INPUT &

SHOOT

THROUGH

PREVENTION

100nsec

deadtime

Input

Latch

HOLD

CLEAR

LOGIC

HOLD LATCH

ONESHOT 6us

HARD

SHUTDOWN

Q SET S

QR

CLR

UV

DETECT

VFL1

To Low Side Logic

LEVEL

SHIFTERS

HIN1

SHUTDOWN

VFB

LATCH

LOCAL DESAT

PROTECTION

SOFT

SHUTDOWN

VOLTAGE

FEEDBACK

UV DETECT

HIN1

di/dt control

DRIVER

VB1

HOQ1

HOP1

HON1

VS1

DSH1

FAULT

LOGIC

HIN2 SHUTDOWN ONESHOT

HIN3 SHUTDOWN ONESHOT

LIN3 SHUTDOWN ONESHOT

LIN2 SHUTDOWN ONESHOT

SHUTDOWN

ONESHOT

SOFT

SHUTDOWN

LOCAL DESAT

PROTECTION

SOFT SHUTDOWN

VOLTAGE

FEEDBACK

LIN1

di/dt control

DRIVER

LOQ1

LOP1

LON1

DSL1

BRIN

8

HARD SHUTDOWN

Figure 3 Fault Logic Diagram

DESAT

DETECTION

VOLTAGE

FEEDBACK

BRAKE

DRIVER

BR

DSB

COM

www.irf.com

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