PWR-82520X
3-PHASE DC MOTOR TORQUE CONTROLLER
FEATURES
DESCRIPTION
The PWR-82520X is a high perfor-
mance current regulating torque
loop controller. It is designed to
accurately regulate the current in the
motor windings of 3-phase brush-
less DC and brush DC motors.
The PWR-82520X 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 signal that
controls the pulse width modulation
(PWM) duty cycle of the output, thus
controlling the motor current. The
PWR-82520X can be tuned by using
an external Proportional/Integral (PI)
regulator network in conjunction with
the internal error amplifier.
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Self-Contained 3-Phase Motor
Controller
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Operates as Current or Voltage
Controller
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1, 3 and 10 Amp Output Current
APPLICATIONS
Packaged in either a small DIP-style
or flat-pack hybrid package, the
PWR-82520X is ideal for applications
with limited printed circuit board area.
PWR-82520X is ideal for applica-
tions requiring current regulation
and/or holding torque at zero input
command. System applications
that can use the PWR-82520X are:
pumps, actuators, antenna posi-
tion, environmental control and
reaction/momentum wheel systems
using brushless and brush motors.
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1.5% Linearity
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3% Current Regulating Accuracy
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User-Programmable Compensation
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10 KHz - 100 KHz PWM Frequency
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Complementary Four-Quadrant
Operation
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Holding Torque through Zero Current
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Cycle-by-Cycle Current Limit
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Optional Radiation Tolerance to
100Krads
5.0V
10K 10K 10K
HALL A
HALL B
HALL C
COMMAND OUT
COMMAND IN +
COMMAND IN -
50K
-
HA
HB
HC
TACH OUT
COMMUTATION
LOGIC
TACH
CIRCUIT
DIR OUT
50K
100
DRIVE
A
PHASE A
VBUS+ A
50K
+
50K
COMMAND GND
SYNC IN
V
DR
V
CC
V
CC
RTN
V
DD
SUPPLY GND
V
EE
CASE GND
ENABLE
PWM IN
COMMAND
BUFFER
PHASE A
+15V
+5V
+5V RTN
+
+
VBUS+ B
PWM
LOGIC
CIRCUITRY
DRIVE
B
PHASE B
PHASE B
VBUS+ C
CASE
5.0V
10.0K
DRIVE
C
PHASE C
PHASE C
PWM OUT
ERROR AMP OUT
R
S
+
ERROR AMP IN
CURRENT
MONITOR OUT
-
+
100
ERROR
AMPLIFIER
-
+
CURRENT
AMP
Rsense
VBUS鈥?/div>
FIGURE 1. PWR-82520X BLOCK DIAGRAM
漏 2000 Data Device Corporation
PWR-82520N1-300相关型号PDF文件下载
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