CIRCUIT TECHNOLOGY

www.aeroflex.com

eroflex Circuit T

Features

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V Supply 28V to 40V

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Package Size 1.7" x 1.3" x 0.275"

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4 Quadrant Control

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3 Phase Commutational Logic

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±15VDC Regulators for External & Internal Use

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Military Processing Available

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MIL-PRF-38534 Compliant Circuits Available

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Full Military (-55°C to +125°C) Temperature Range

General Description

The ACT5026 combines a high power MOSFET 3 phase H-bridge output stage with all of the control circuitry

required to form a closed loop motor controller. The input command voltage linearly controls the motor

current with a scale-factor of 2 Amps per volt and a small-signal bandwidth of 2KHz.

Input command

polarity determines Motor direction. Only one supply is necessary due to the internal regulators and

converter which provide

±15 Volts for internal as well as external use.

The circuitry includes:

V Supply

Hall

Brushless

Motor

Inputs

+15V

-15V

≤ 70mA

≤ 20mA

V RTN

+15V

Reg

-15V

Reg

DC/DC

Conv

FW

Rect

Current

Sense

Current

Monitor

Current

Command

Inputs

External

Loop

Comp

FW

Rect

16.7 KHz

Clock

(Optional)

SYNC

Cktry

OSC

PWM

Logic

3Ø

H-Bridge

MOSFET

BLOCK DIAGRAM

Direction

Internal use

Internal use

ACT5026 10 AMP 3-PHASE

BRUSHLESS DC MOTOR CONTROLLER

PWM

Input

Preliminary

+

-