High Voltage 3-Phase Motor Driver

SCM1101MF

5

Timing Diagrams

HIN

LIN

VB- HS

HO

LO

FO

UVHL

UVHH

*Start from positive edge

after UVLO release .

* No output at H-side UVLO

HIN

LIN

VCC

HO

LO

FO

UVLL

UVLH

*VB- HS =15 V

*Start from positive edge

after UVLO release

HIN

LIN

HO

LO

FO

*While both HIN and LIN are in high state

HO and LO turn off and FO signals out

VCC

LIN

VB- HS

LS

FO

VCC

BlankingTime

(2 μs typ.)

CFO

OCP Assist Timer

(2 μs min.)

(3.5 V typ.)

The slope depends on

* Off operation of all phases can be done by wired OR system

with the three FO pins short circuited

IGBT turns off softly after

overcurrent condition is detected

High-Side Driver Input/Output

Low-Side Driver Input/Output

Shoot-Through Prevention

Overcurrent Protection

Allegro MicroSystems, Inc.

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com