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IRPT1061A

Power Module for 1 hp Motor Drives

IRPT1061A

PRELIMINARY

· 1 hp (0.75 kW) power output

Industrial rating at 150% overload for 1 minute

· 180-240V AC input, 50/60 Hz
· 3-phase rectifier bridge
· 3-phase ultrafast IGBT inverter
· HEXFRED ultrafast soft recovery freewheeling diodes
· Brake IGBT and diode
· Low inductance (current sense) shunts in positive

and negative DC rail

· NTC temperature sensor
· Pin-to-baseplate isolation 2500V rms
· Easy-to-mount two-screw package
· Case temperature range -25

C to 125

C operational

Figure 2. The IRPT1061C

within a motor

control system

Figure 1. IRPT1061A Power Module

IRPT1061A

Power

Module

IRPT1061D

Driver-

Plus

Board

PWM

generator

180-240V

3-phase input

PWM

variable

frequency

output

feedback
(non-isolated)

keyboard

feedback

processing

motor

IRPT1061C

PD 6.118

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IRPT1061A

System Description

The IRPT1061A Power Module

The IRPT1061A power module, shown in figure 1, is a chip

and wire epoxy encapsulated module. It houses input rectifiers,
brake IGBT and freewheeling diode, output inverter, current
sense shunts and NTC thermistor. The 3-phase input bridge
rectifiers are rated at 800V. The inverter section uses 600V,
short circuit rated, ultrafast IGBTs and ultrafast freewheeling
diodes. Current sensing is achieved through 75 m

low

inductance shunts provided in the positive and negative DC bus
rail. The NTC thermistor provides temperature sensing
capability. The lead spacing on the power module meets UL840
pollution level 3 requirements.

The power circuit and layout within the module are carefully

designed to minimize inductance in the power path, to reduce
noise during inverter operation and to improve the inverter
efficiency. The Driver-Plus Board required to run the inverter
can be soldered to the power module pins, thus minimizing
assembly and alignment. The power module is designed to be
mounted to a heat sink with two screw mount positions, in order
to insure good thermal contact between the module substrate and
the heat sink.

and Design Kit

The IRPT1061A

(Figure 3) provides the

complete power conversion function for a 1 hp (0.75 kW)
variable voltage, variable frequency AC motor controller. The

combines the Power Module (IRPT1061A)

with a Driver-Plus Board (IRPT1061D). The
Design Kit, IRPT1061E includes the following:

· Complete

integrated power stage

· Specification and operating instructions
· Bill of materials
· Electrical schematic
· Mechanical layout for Driver-Plus Board
· Software transferrable file for easy design integration
· Application information and layout considerations

Figure 3. IRPT1061C

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IRPT1061A

PARAMETERS

VALUES

CONDITIONS

Input Power

Voltage

220V, -15%, +10%, 3-phase

Frequency

50/60 Hz

Current

6.2A rms @ nominal output

= 40

C, R

thSA

= 1.24

C/W

FSM

150A

10 ms half-cycle, non-repetitive surge

Output Power

Voltage

0 - 230V rms

defined by external PWM control

Nominal motor hp (kW)

1 hp (0.75 kW) nominal full load power

= 220V AC, f

pwm

= 4 kHz,

150% overload for 1 minute

= 60 Hz,

Nominal motor current

4.4A rms nominal full load power

= 40

C, R

thSA

= 1.24

C/W

6.6A rms 150% overload for 1 minute

DC Link

DC link voltage

425V maximum

Brake

Current

7.9A

Sensor

Temp. sense resistance

50kOhms

@ T

NTC

= 25

3.1kOhms

10%

@ T

NTC

= 100

Current sense

75mOhms

@ T

SHUNT

= 25

Protection

IGBT short circuit time

DC bus = 425V, V

= 15V, line to line short

Recommended short circuit-

20A peak

shutdown current

Gate Drive

34 nC (typical)

= 15V, refer figure 5b

Recommended gate driver

IR2132J (refer figure 10)

refer to design kit IRPT1061E

Module

Isolation voltage

2500V rms

pin to baseplate, 60 Hz, 1 minute

Operating case temperature

-25

C to 125

95% RH max. (non-condensing)

Mounting torque

1 Nm

M4 screw type

Storage temperature range

-40

C to 125

Soldering temperature for 10 sec.

260

C maximum

at the pins (.06" from case)

Specifications

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IRPT1061A

NOTE: For Figures 4a and 4b: Operating Conditions: Vin = 230 Vrms, MI = 1.15, PF = 0.8, TA = 40

C, Z

thSA

limits

rise during 1 minute overload to 10

Figure 4a. 1 hp/4.4A Output Heat Sink Thermal Resistance and Power Dissipation vs. PWM Frequency

PWM Frequency (kHz) (Induction Motor Load)

Figure 4b. 0.75 hp/3.5A Output Heat Sink Thermal Resistance and Power Dissipation vs. PWM Frequency

PWM Frequency (kHz) (Induction Motor Load)

Total Power Dissipation (Watt)

Thermal Resistance(R

C/W)

Total Power Dissipation (Watt)

Power
150%

Thermal Resistance(R

C/W)

Power
100%

Power
150%

RthSA 100% load
(continuous)
10-60 Hz

Power
100%

RthSA 150% load
(1 min.)
down to 3 Hz

RthSA 100% load
(continuous)
10-60 Hz

RthSA 150% load
(1 min.)10-60 Hz

RthSA 150% load
(1 min.)
down to 3 Hz

RthSA 150% load
(1 min.)10-60 Hz

Part Number IRPT1061A