ACT5026 AEROFLEX | Alldatasheet

Document overview

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Technical content

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 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 ±15Volts 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 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

(Optional) SYNC Cktry OSC PWM Logic H-Bridge MOSFET BLOCK DIAGRAM Direction Internal use Internal use ACT5026 10 AMP 3-PHASE BRUSHLESS DC MOTOR CONTROLLER PWM Input Preliminary

2Aeroflex Circuit Technology SCD5026 REV A 8/21/98 Plainview NY (516) 694-6700 Pinout Descriptions PIN Number FUNCTION 1 +15V OUTPUT

2 EXTERNAL CAP +

3 EXTERNAL CAP -

8 COMMUTATOR INPUT A

7 COMMUTATOR INPUT B

6 COMMUTATOR INPUT C

13 CURRENT MONITOR OUT

15 CURRENT COMMAND (+)

14 CURRENT COMMAND RETURN (-)

17 MOTOR DRIVE OUTPUT A

18 MOTOR DRIVE OUTPUT B

19 MOTOR DRIVE OUTPUT C

20 V SUPPLY

10 V RETURN SIGNAL

16 V RETURN PWR

5 CLOCK

12 LOOP COMPENSATION, ERROR AMP OUTPUT

9 LOOP COMPENSATION, ERROR AMP SUMMING NODE

11 PWM INPUT

Aeroflex Circuit Technology

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FAX: (516) 694-6715 Toll Free Inquiries: 1-(800) 843-1553 Telephone: (516) 694-6700 Specifications subject to change without notice ACT 5026 88379 MADE IN U.S.A. XXXX 1.300 1.700 2.200 1.125 .125 TYP .280 TYP 1.950 1.050 .287 ±.010 .250 ±.010 (9 Spaces at .125) Ø .125 (2 Holes) 1.550 ±.020 .045.600 ±.020 .155Ø .040 TYP .275 MAX Z Package Outline Drawing CIRCUIT TECHNOLOGY