PW-82520/21N
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TM
3-PHASE DC MOTOR
TORQUE CONTROLLER
FEATURES
•
Self-Contained 3-Phase Motor
Controller
•
Operates as Current or Voltage
Controller
•
1, 3 or 10 Amp Output Current
•
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
•
Optional Radiation Tolerance to
100Krads (see PW-82520R data
sheet)
DESCRIPTION
The PW-82520N (100Vdc) and PW-82521N (200Vdc) are high per-
formance current regulating torque loop controllers designed to accu-
rately regulate the current in the motor windings of 3-phase brushless
DC and brush DC motors.
The PW-82520/21N 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-82520/21N per-
formance can be tuned by utilizing the internal error amplifier and the
external Proportional/Integral (PI) regulator network components to
match motor characteristics.
APPLICATIONS
The PW-82520/21N is ideal for applications requiring current regula-
tion and/or holding torque at zero input command. System applica-
tions include: pumps, actuators, antenna position, environmental con-
trol, reaction/momentum wheel systems using brushless and brush
motors, flight surface control on aircrafts for horizontal stabilizers and
flaps, missile fin control, fuel and Hydraulic pumps, radar, and counter
measure systems.
Packaged in a small DIP-style hybrid package, the PW-82520/21N is
well suited for applications with limited printed circuit board area.
FOR MORE INFORMATION CONTACT:
Data Device Corporation
105 Wilbur Place
Bohemia, New York 11716
631-567-5600 Fax: 631-567-7358
www.ddc-web.com
Technical Support:
1-800-DDC-5757 ext. 7677 or 7381
©
2001 Data Device Corporation
Data Device Corporation
www.ddc-web.com
2
PW-82520/21N
A-11/01-1000
5.0V
10K 10K 10K
HALL A
HALL B
HALL C
COMMAND OUT
50K
COMMAND IN -
COMMAND IN +
50K
+
HA
HB
HC
100
TACH OUT
COMMUTATION
LOGIC
TACH
CIRCUIT
100
DIR OUT
50K
-
100
DRIVE
A
PHASE A
VBUS+ A
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
470pF
R
S
+
ERROR AMP IN
CURRENT
MONITOR OUT
-
+
100
ERROR
AMPLIFIER
-
+
CURRENT
AMP
Rsense
VBUS–
FIGURE 1. PW-82520/21N BLOCK DIAGRAM
TABLE 1. PW-82520/21N ABSOLUTE MAXIMUM RATINGS (TC = +25°C UNLESS OTHERWISE SPECIFIED)
PARAMETER
BUS VOLTAGE PW-82520N / (PW-82521N)
+15V SUPPLY
+5V TO +15V
+5V SUPPLY
-5V TO -15V
VBUS- TO GND
Voltage Differential
CONTINUOUS OUTPUT CURRENT
PW-82520N1
PW-82520N3
PW-82520N0 / PW-82521N0
PEAK OUTPUT CURRENT (PULSED t = 50µS)
PW-82520N1
PW-82520N3
PW-82520N0 / PW-82521N0
COMMAND INPUT +
COMMAND INPUT -
LOGIC INPUTS:
ENABLE, SYNC IN, HA, HB, HC, ERROR AMP IN, PWM IN
TACH OUT / DIR OUT
TACH OUT / DIR OUT
SYMBOL
VBUS+ A,B,C
V
DR
V
DD
V
CC
V
EE
V
GNDDIF
I
OC
I
OC
I
OC
I
OP
I
OP
I
OP
V
CMD
+
V
CMD
-
VIH
V
OH
I
OL
VALUE
100.0 (200.0)
+17.5
+17.5
+5.5
-17.5
0-V
DD
+1.0
1
3
10
3
8
18
±15.0
±15.0
7.0
40
20
UNITS
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
A
A
A
A
A
Vdc
Vdc
Vdc
Vdc
mA
TABLE 2. PW-82520/21N SPECIFICATIONS
(UNLESS OTHERWISE SPECIFIED, VBUS = 28VDC, V
DR
= +15V, V
CC
= +5V, V
DD
= +5V, V
EE
= -5V, TC = 25°C, LL = 500 µH,
PWM IN = PWM OUT AT ½ FREE RUNNING FREQUENCY)
PARAMETER
OUTPUT (PW-82520N1)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Diode Forward Voltage Drop
OUTPUT (PW-82520N3)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Diode Forward Voltage Drop
OUTPUT (PW-82520N0)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Diode Forward Voltage Drop
OUTPUT PW-82521N0
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Diode Forward Voltage Drop
SYMBOL
I
OC
I
OP
I
CL
I
OFFSET
R
ON
R
C
V
F
I
OC
I
OP
I
CL
I
OFFSET
R
ON
R
C
V
F
I
OC
I
OP
I
CL
I
OFFSET
R
ON
R
C
V
F
I
OC
I
OP
I
CL
I
OFFSET
R
ON
R
C
V
F
TEST CONDITIONS
MIN
TYP
MAX
1
3
1.8
+20
0.055
0.075
0.080
1.5
3
8
4.5
+20
0.055
0.075
0.080
1.8
10
18
15.4
+100
0.055
0.075
0.080
1.9
10
18
15.4
+0.3
0.100
0.140
0.080
1.9
UNITS
A
A
A
mA
Ω
Ω
Ω
V
A
A
A
mA
Ω
Ω
Ω
V
A
A
A
mA
Ω
Ω
Ω
V
A
A
A
A
Ω
Ω
Ω
V
Pulse Width
≤
50µsec
FIGURE 7, V
CMD
= 0V
+25°C
+85°C
+85°C
I
D
= 1A
1.3
-20
1.5
Pulse Width
≤
50µsec
FIGURE 7, V
CMD
= 0V
+25°C
+85°C
+85°C
I
D
= 3A
3.4
-20
4
Pulse Width
≤
50µsec
FIGURE 7, V
CMD
= 0V
+25°C
+85°C
+85°C
I
D
= 10A
12.0
-100
14.0
0
Pulse Width
≤
50µsec
FIGURE 7, V
CMD
= 0V
+25°C
+85°C
+85°C
I
D
= 10A
12.0
-0.3
14.0
0
Data Device Corporation
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3
PW-82520/21N
A-11/01-1000
TABLE 2. PW-82520/21N SPECIFICATIONS (CONTINUED)
(UNLESS OTHERWISE SPECIFIED, VBUS = 28VDC, V
DR
= +15V, V
CC
= +5V, V
DD
= +5V, V
EE
= -5V, TC = 25°C, LL = 500 µH,
PWM IN = PWM OUT AT ½ FREE RUNNING FREQUENCY)
PARAMETER
PROPAGATION DELAY
SYMBOL
Td (on)
Td (off)
SWITCHING CHARACTERISTICS
PW-82520N1
Upper Drive
Turn-on Rise Time
Turn-off Fall Time
Lower Drive
Turn-on Rise Time
Turn-off Fall Time
PW-82520N3
Upper Drive
Turn-on Rise Time
Turn-off Fall Time
Lower Drive
Turn-on Rise Time
Turn-off Fall Time
PW-82520N0/21N0
Upper Drive
Turn-on Rise Time
Turn-off Fall Time
Lower Drive
Turn-on Rise Time
Turn-off Fall Time
CURRENT MONITOR AMP
(ALL MODELS)
Current Monitor Offset
Output Current
Output Resistance
CURRENT MONITOR AMP
(PW-82520N1)
Current Monitor Gain
CURRENT MONITOR AMP
(PW-82520N3)
Current Monitor Gain
CURRENT MONITOR AMP
(PW-82520/82521N0)
Current Monitor Gain
CURRENT COMMAND
Transconductance Ratio
PW-82520N1
PW-82520N3
PW-82520/82521N0
Non-Linearity
Temperature Coefficient of G
PW-82520N1/N3
PW-82520/82521N0
VBUS+ SUPPLY
Nominal Operating Voltage
PW-82520N1/N3/N0
PW-82521N0
+15V SUPPLY
Voltage
Current
Current
N1
N3
N0
FIGURE 7
G
Io = 1A
Io = 3A
Io = 10A
0.24
0.73
2.37
-1.5
0.25
0.75
2.50
0.038
0.05
V
NOM
18
36
V
DR
I
DR
I
DR
I
DR
I
DR
+13.5
ENABLE = high
ENABLE = low
ENABLE = low
ENABLE = low
28
56
+15.0
100
9
18
30
70
140
+16.5
15
25
45
Vdc
Vdc
Vdc
µA
mA
mA
mA
0.26
0.76
2.63
+1.5
A/V
A/V
A/V
% FSR
%FSR/°C
%FSR/°C
TEST CONDITIONS
From 1.5V on ENABLE to
90% of VBUS
From 3.5V on ENABLE to
10% of VBUS
MIN
TYP
40
20
MAX
UNITS
µs
µs
t
r
t
f
t
r
t
f
t
r
t
f
t
r
t
f
t
r
t
f
t
r
t
f
Rise Time =
90% to 10% of V
BUS
Fall Time =
10% to 90% of V
BUS
I
O
= 1A
Rise Time =
90% to 10% of V
BUS
Fall Time =
10% to 90% of V
BUS
I
O
= 3A
Rise Time =
90% to 10% of V
BUS
Fall Time =
10% to 90% of V
BUS
I
O
= 10A
75
30
50
60
150
150
160
130
200
200
200
200
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Io
C
= 0A
R
OUT
-10
-10
+10
+10
1
mVdc
mA
Ω
4
V/A
1.33
V/A
0.40
V/A
Data Device Corporation
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4
PW-82520/21N
A-11/01-1000
TABLE 2. PW-82520/21N SPECIFICATIONS (CONTINUED)
(UNLESS OTHERWISE SPECIFIED, VBUS = 28VDC, V
DR
= +15V, V
CC
= +5V, V
DD
= +5V, V
EE
= -5V, TC = 25°C, LL = 500 µH,
PWM IN = PWM OUT AT ½ FREE RUNNING FREQUENCY)
PARAMETER
+5V SUPPLY
Voltage
Current
+5V TO +15V SUPPLY
Voltage
Current
-5V TO -15V SUPPLY
Voltage
Current
SYNC IN
Low
High
Duty Cycle
SYNC range as % of free-run frequency
PWM IN
+ Peak Voltage
- Peak Voltage
Frequency
Linearity Error
Duty Cycle
PWM OUT
Free Run Frequency
PW-82520N1/N3
PW-82520/82521N0
Stability, Temperature
HALL SIGNALS (HA,
HB, HC)
Logic 0
Logic 1
ENABLE
Enabled
Disabled
TACH OUT/ DIR OUT
Current Sink
ISOLATION
Case to Ground
COMMAND IN+/-
Differential Input
Input Offset
Input Offset Drift
COMMAND OUT
Internal Voltage Clamp
Slew Rate
Settling Time
THERMAL (ALL MODELS)
Junction Temperature
Case Operating Temperature
Case Storage Temperature
THERMAL (PW-82520N1)
Thermal Resistance
Junction-Case
Case-Air
THERMAL (PW-82520N3)
Thermal Resistance
Junction-Case
Case-Air
THERMAL (PW-82520N0/82521N0)
Thermal Resistance
Junction-Case
Case-Air
WEIGHT
N0, N1, N3
SYMBOL
V
CC
I
CC
V
DD
I
DD
V
EE
I
EE
V
IL
V
IH
D.C.
+15V
+15V
-15V
-15V
TEST CONDITIONS
MIN
+4.5
TYP
+5.0
10
MAX
+5.5
15
+16.5
50
-4.5
50
1.5
3.5
49
100
Vcc = 4.5 - 5.5V
2.3
-2.7
10
-2
49
50
51
120
2.7
-2.3
110
+2
51
UNITS
Vdc
mA
Vdc
mA
Vdc
mA
Vdc
Vdc
%
%
V
V
KHz
%
%
+4.5
35
-16.5
30
Vp+
Vp-
f
PWM
LIN
D.C.
f
PWM
2.5
-2.5
50
95
47.5
Full Temp Range
100
50
0.5
105
52.5
2.0
1.5
KHz
KHz
%
Vdc
Vdc
Vdc
Vdc
Vdc
MΩ
V
IL
V
IH
V
IL
V
IH
V
OL
Open Collector
@ 1mA
500 Vdc HIPOT
V
CMD
3.5
1.5
3.5
0.7
10
-4
2
+4
800
1.2
Vdc
µV
µV/°C
Vdc
V/µs
µs to 0.1%
°C
°C
°C
V
CLAMP
V
O
= 0.2 to 4.5V
Tj
T
C
T
CS
θj-c
θc-a
-5
3
1.4
+5
-55
-65
+150
+125
+150
25
10
°C/W
°C/W
θj-c
θc-a
θj-c
θc-a
9
10
°C/W
°C/W
4
5.5
1.7 (48)
°C/W
°C/W
oz (g)
Data Device Corporation
www.ddc-web.com
5
PW-82520/21N
A-11/01-1000
