IRSM836-044MA

12

www.irf.com

© 2012 International Rectifier

January 21, 2013

Typical Application Connection IRSM836-044MA

IRSM836-044MA

HVIC

VCC

HIN1

HIN2

HIN3

LIN1

LIN2

LIN3

FAULT

ITRIP

EN

VB1

VB2

VB3

U, VS1

V, VS2

W, VS3

RCIN

Power

Supply

PWMWH

PWMVH

PWMUH

PWMVL

PWMWL

GATEKILL

AIN1

IFB+

IFB-

IFBO

VSS

VDD

VDDCAP

XTAL0

XTAL1

AIN2

SPD-REF

VSS

COM

VBUS

IRMCK171

PWMUL

4.87k

2M

2M

1nF

0.5

6.04k

6.04k

7.68k

1.

Electrolytic bus capacitors should be mounted as close to the module bus terminals as possible to reduce

ringing and EMI problems. Additional high frequency ceramic capacitor mounted close to the module pins

will further improve performance.

2.

In order to provide good decoupling between VCC-VSS and VB1,2,3-VS1,2,3 terminals, the capacitors

shown connected between these terminals should be located very close to the module pins. Additional

high frequency capacitors, typically 0.1µF, are recommended.

3.

Value of the boot-strap capacitors depends upon the switching frequency. Their selection should be made

based on IR application note AN-1044.

4.

PWM generator must be disabled within Fault duration to guarantee shutdown of the system. Over-

current condition must be cleared before resuming operation.