SANKEN ELECTRIC CO., LTD.

SCM1240M

Features and Benefits

▪ Each half-bridge circuit consists of a pre-driver circuit that

is completely independent from the others

▪ 10 to 30 A continuous output IPM in a small-footprint

package

▪ Protection against simultaneous high- and low-side turning on

▪ Bootstrap diodes with series resistors for suppressing

inrush current are incorporated

▪ CMOS compatible input (3.3 to 5 V)

▪ Designed to minimize simultaneous current through both

high- and low-side IGBTs by optimizing gate drive resistors

▪ Integrated Fast Recovery Diode (FRD) as freewheeling

diode for each IGBT

▪ UVLO protection with auto restart

▪ Thermal shutdown (TSD) with auto restart

▪ Fault (¯F¯¯¯O¯ indicator) signal output at protection activation:

UVLO (low side only), OCP, STP, and TSD

▪ Proprietary power DIP package

▪ UL Recognized Component (File No.: E118037)

High Voltage, High Current 3-Phase Motor Drivers

Functional Block Diagram

Packages: Power DIP

Not to scale

Fully molded

LF 2551

Heatsink pad

LF2552

Level

Shift

UV

Detect

Drive

Circuit

Drive

Circuit

Input Logic

O.C.

Protect

Thermal

Protect

UV

Detect

BootDi

FRD

FRD

COM

LIN

HIN

VB

HS

VCC

LS

OCP

MIC

SCM1240M

FO

VBB

U,V,W

STP

One of three phases

Figure 1. Diagram of one of three phases in the device.

Description

The SCM1240M inverter power module (IPM) devices provide

a robust, highly-integrated solution for optimally controlling

3-phase motor power inverter systems and variable speed

control systems used in energy-conserving designs to drive

motors of residential and commercial appliances. These ICs

take 85 to 253 VAC input voltage, and 10 to 30 A (continuous)

output current. They can withstand voltages of up to 600 V

(IGBT breakdown voltage).

The high current SCM1240M employs a new, small-footprint

proprietary DIP package. The IC itself consists of all of the

necessary power elements (six IGBTs), pre-drive ICs (three),

and freewheeling diodes (six), needed to configure the main

circuit of an inverter, as well as a bootstrap circuit (three

bootstrap diodes and three boot resistors) as a high-side drive

power supply. This enables the main circuit of the inverter to

be configured with fewer external components than traditional

designs.

Applications include residential white goods (home appliances)

and commercial appliance motor control, such as:

▪ Air conditioner compressor motor

▪ Air conditioner fan motor

▪ Refrigerator compressor motor

▪ Washing machine main motor

http://www.sanken-ele.co.jp/en/

SCM1240MDS-Rev. 5