SSM1004MA

Description

The SSM1004MA inverter power module (IPM) device

provides 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 25 A (continuous)

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

(IGBT breakdown voltage).

TheSSM1000MseriesemploysanewproprietaryDIPpackage.

The IC itself consists of all of the necessary power elements

(six IGBTs), pre-driver ICs (four), and flyback diodes (six),

needed to configure the main circuit of an inverter, as well as

a shunt resistor. This enables the main circuit of the inverter to

be configured with fewer external components than traditional

designs.

Applications include residential white goods (home

applications) and commercial appliance motor control:

• Air conditioner compressor

• Washing machine main drum

Features and Benefits

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

is completely independent from the others

▪ 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

▪ UVLO protection with auto restart

▪ Overcurrent protection with off-time period adjustable by

an external capacitor

▪ Fault (FO indicator) signal output at

protection activation: UVLO (low

side only), OCP, and STP

▪ Proprietary power DIP

package

High Voltage 3-Phase Motor Driver

Functional Block Diagram

Package: Power DIP

Not to scale

Low-Side Driver

DELA Y

DELA Y

DELA Y

VC C

LIN1

UV

DETEC T

OC P

BLANK

TIMER

and

HOLD

LIN2

LIN3

LS

LO 1

LO 2

LO 3

CO M

RC

CO M P

VTRIP

RB

PU LSE

FILTER

UV

DETEC T

R

R

S

Q

PU LSE

PU LSE

GEN ER A TO R

VB

HO

HS

CO M

VC C

HIN

HV

LEV EL

SHIFT

High-Side Driver

Figure 1. Driver block diagrams.

28300.004