
TM
Data Device Corporation
105 Wilbur Place
Bohemia, New York 11716
631-567-5600 Fax: 631-567-7358
www.ddc-web.com
FOR MORE INFORMATION CONTACT:
Technical Support:
1-800-DDC-5757 ext. 7677 or 7381
FEATURES
Self-Contained 3-Phase Motor
Controller
Operates as Current or Voltage
Controller
1, 3 and 10 Amp Output Current
Radiation Tolerant to 100Krads
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 Tolerance also
available (see PWR-82520/21N data
sheet)
DESCRIPTION
The PWR-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 PWR-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 PWR-82520R can be
tuned by using an external Proportional/Integral (PI) regulator net-
work in conjunction with the internal error amplifier.
APPLICATIONS
The PWR-82520R is ideal for space and radiation tolerant applica-
tions requiring current regulation and/or holding torque at zero input
command. System applications that can use the PWR-82520R are:
pumps, actuators, antenna position, environmental control and reac-
tion/momentum wheel systems using brushless and brush motors.
Available in a 1 and 3 amp small DIP-style or a 10 amp flat-pack
hybrid package, the PWR-82520R is suitable for applications with lim-
ited printed circuit board area.
2001 Data Device Corporation
Make sure the next
Card you purchase
has...
PWR-82520R
RADIATION TOLERANT 3-PHASE DC
MOTOR TORQUE CONTROLLER
Preliminary