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Radiation Tolerant 3-Phase DC Motor Torque Controller

Discontinued Product. Please contact the factory for the latest replacement.


Part Number(s): PW-82520R
Lead Free Information: C

The PW-82520R (100Vdc) is a high performance, radiation tolerant, current regulating torque loop controller designed to accurately regu-late the current in the motor windings of 3-phase brushless DC and brush DC motors.

The PW-82520R is a completely self-contained motor controller that converts an analog input command signal into motor current and uses the signals from Hall-effect sensors in the motor to commutate the current in the motor windings. The motor current is internally sensed and processed into an analog signal. The current signal is summed together with the command signal to produce an error sig-nal that controls the pulse width modulation (PWM) duty cycle of the output, thus controlling the motor current. The PW-82520R perform-ance can be tuned by utilizing the internal error amplifier and the external Proportional/Integral (PI) regulator network components to match motor characteristics.


  • Self-Contained 3-Phase Motor Controller
  • Operates as Current or Voltage Controller
  • 1, 3 and 10 Amp Output Current
  • Radiation Tolerant Total Dose: 100 Krads SEU: > 100 MeV/mg/cm 2
  • 1.5% Linearity
  • 3% Current Regulating Accuracy
  • User-Programmable Compensation
  • 10 KHz - 100 KHz PWM Frequency
  • Complementary Four-Quadrant Operation
  • Holding Torque through Zero Current
  • Cycle-by-Cycle Current Limit
  • Non-Radiation Tolerant versions of this product are also available (see PW-82520/21N data sheet)




Radiation Tolerant 3 Phase DC Motor Torque Controller

 Application Note

PW-3 Universal 3-Phase Drive for Closed-Loop Speed Control

PW-4 Smart-Power H-Bridges Control the Speed and Torque of DC Brush Motors


BLDC Motor Control in Demanding Environments

 Generic Document

DDC Corporate Overview

DDC Product Catalog

DDC Custom Solutions Brochure


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