ACT5026 10 AMP 3-PHASE BRUSHLESS DC MOTOR CONTROLLER Preliminary Features ■ ■ ■ ■ ■ ■ ■ ■ ■ V Supply 28V to 40V 10 Amps Continuous Current (Up to 85°C) Package Size 1.7" x 1.3" x 0.275" 4 Quadrant Control 3 Phase Commutational Logic ±15VDC Regulators for External & Internal Use Military Processing Available MIL-PRF-38534 Compliant Circuits Available Full Military (-55°C to +125°C) Temperature Range CIRCUIT TECHNOLOGY www.aeroflex.com 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: • Fully Differential Input Amplifier • A Pulse Width Modulator Internally clocked at 16.7KHz (Has external Sync pin) • ± 15 Volt regulated outputs derived from main supply • Internal Current Sense Resistor • External Loop Compensation pins to tailor to specific motors • Current Monitor Output with Scale Factor of 1.67 Volts/Amp 16.7 KHz Clock SYNC Cktry (Optional) BLOCK DIAGRAM V Supply OSC Hall Inputs PWM PWM Input Logic External Loop Comp 3Ø MOSFET H-Bridge Brushless Motor Internal use Direction + Current Command Inputs - +15V Reg FW Rect +15V ≤ 70mA DC/DC Conv Internal use Current Monitor FW Rect Current Sense -15V Reg -15V ≤ 20mA V RTN eroflex Circuit Technology – Motor Driver Modules For The Future © SCD5026 REV A 8/21/98 Z CIRCUIT TECHNOLOGY Package Outline Drawing .275 MAX 2.200 1.950 .600 ±.020 1.700 .250 ±.010 Ø.125 (2 Holes) ACT 5026 88379 1.300 .045 1.050 MADE IN U.S.A. 1.550 ±.020 XXXX .280 TYP .287 ±.010 .125 TYP 1.125 (9 Spaces at .125) Ø.040 TYP .155 Pinout Descriptions PIN Number 1 2 3 4 8 7 6 13 15 14 17 18 19 20 10 16 5 12 9 11 FUNCTION +15V OUTPUT EXTERNAL CAP + EXTERNAL CAP -15V OUTPUT COMMUTATOR INPUT A COMMUTATOR INPUT B COMMUTATOR INPUT C CURRENT MONITOR OUT CURRENT COMMAND (+) CURRENT COMMAND RETURN (-) MOTOR DRIVE OUTPUT A MOTOR DRIVE OUTPUT B MOTOR DRIVE OUTPUT C V SUPPLY V RETURN SIGNAL V RETURN PWR CLOCK LOOP COMPENSATION, ERROR AMP OUTPUT LOOP COMPENSATION, ERROR AMP SUMMING NODE PWM INPUT Aeroflex Circuit Technology 35 South Service Road Plainview New York 11830 Specifications subject to change without notice Aeroflex Circuit Technology Telephone: (516) 694-6700 FAX: (516) 694-6715 Toll Free Inquiries: 1-(800) 843-1553 2 SCD5026 REV A 8/21/98 Plainview NY (516) 694-6700