PW-82520/21N
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®
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
DESCRIPTION
The PW-82520N (100Vdc) and PW-82521N (200Vdc) are high
performance current regulating torque loop controllers designed to
accurately 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 signal
that controls the pulse width modulation (PWM) duty cycle of the
output, thus controlling the motor current. The PW-82520/21N perfor-
mance can be tuned by utilizing the internal error amplifier and the
external Proportional/Integral (PI) regulator network components to
match motor characteristics.
•
Holding Torque through Zero
Current
•
Cycle-by-Cycle Current Limit
•
Optional Radiation Tolerance to
100Krads (see PW-82520R data
sheet)
APPLICATIONS
The PW-82520/21N is ideal for applications requiring current regula-
tion and/or holding torque at zero input command. System
applications include: pumps, actuators, antenna position,
environmental control, 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. 7771
©
2001 Data Device Corporation
5.0V
10K 10K 10K
HA
HB
HC
HALL A
TACH OUT
HALL B
Data Device Corporation
www.ddc-web.com
HALL C
COMMUTATION
LOGIC
DIR OUT
COMMAND OUT
50K
-
COMMAND IN +
50K
+
50K
100
DRIVE
A
PHASE A
VBUS+ A
COMMAND IN
-
50K
COMMAND
BUFFER
PHASE A
COMMAND GND
SYNC IN
+15V
+5V
+5V RTN
+
+
VBUS+ C
CASE
10.0K
5.0V
DRIVE
C
PHASE C
DRIVE
B
PHASE B
VBUS+ B
V
DR
V
CC
V
CC
RTN
PHASE B
V
DD
PWM
LOGIC
CIRCUITRY
2
470pF
-
SUPPLY GND
V
EE
CASE GND
PHASE C
ENABLE
PWM IN
PWM OUT
ERROR AMP OUT
100
ERROR
AMPLIFIER
-
+
R
S
+
Rsense
+
ERROR AMP IN
CURRENT
MONITOR OUT
CURRENT
AMP
VBUS–
PW-82520/21N
K-8/08-0
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
10
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
Output Conductor Resistance Temp Coefficient
Diode Forward Voltage Drop
OUTPUT (PW-82520N3)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Output Conductor Resistance Temp Coefficient
Diode Forward Voltage Drop
OUTPUT (PW-82520N0)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Output Conductor Resistance Temp Coefficient
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
TEST CONDITIONS
MIN
TYP
MAX
1
3
1.8
+20
0.055
0.100
0.080
330
1.5
3
8
4.5
+20
0.055
0.100
0.080
330
1.8
10
18
15.4
+100
0.055
0.100
0.080
330
1.9
UNITS
A
A
A
mA
Ω
Ω
Ω
ppm/C
V
A
A
A
mA
Ω
Ω
Ω
ppm/C
V
A
A
A
mA
Ω
Ω
Ω
ppm/C
V
Pulse Width
≤
50µsec
FIGURE 7, V
cmd
= 0V
+25°C
+125°C
+25°C
I
d
= 1A
1.3
-20
1.5
Pulse Width
≤
50µsec
FIGURE 7, V
cmd
= 0V
+25°C
+125°C
+25°C
I
d
= 3A
3.4
-20
4
Pulse Width
≤
50µsec
FIGURE 7, V
cmd
= 0V
+25°C
+125°C
+25°C
I
d
= 10A
12.0
-100
14.0
0
Data Device Corporation
www.ddc-web.com
3
PW-82520/21N
K-8/08-0
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
OUTPUT (PW-82521N0)
Output Current Continuous
Output Current Pulsed
Current Limit
Current Offset
Output On-Resistance
Output Conductor Resistance
Output Conductor Resistance Temp Coefficient
Diode Forward Voltage Drop
PROPAGATION DELAY
SYMBOL
I
oc
I
op
I
cl
I
offset
R
on
R
c
V
f
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
(PW-82520N1/N3/N0, PW-82521N0)
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
TEST CONDITIONS
MIN
TYP
MAX
10
18
15.4
+0.3
0.100
0.170
0.080
330
1.9
40
20
UNITS
A
A
A
A
Ω
Ω
Ω
ppm/C
V
µs
µs
Pulse Width
≤
50µsec
FIGURE 7, V
cmd
= 0V
+25°C
+125°C
+25°C
I
d
= 10A
From 1.5V on ENABLE to
90% of VBUS
From 3.5V on ENABLE to
10% of VBUS
12.0
-0.3
14.0
0
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
G
Tested using circuit
shown in FIGURE 7
Io = 1A
Io = 3A
Io = 10A
V/A
0.24
0.73
2.37
-2.5
0.25
0.75
2.50
0.038
0.05
0.26
0.76
2.63
+2.5
A/V
A/V
A/V
% FSR
%FSR/°C
%FSR/°C
V
nom
18
36
28
56
70
140
Vdc
Vdc
Data Device Corporation
www.ddc-web.com
4
PW-82520/21N
K-8/08-0
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
+15V SUPPLY
Voltage
Current
Disabled
(PW-82520N1/N3/N0, PW-82521N0)
Enabled
(PW-82520N1/N3/N0, PW-82521N0)
+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
Input Impedance
PWM IN
+ Peak Voltage
- Peak Voltage
Frequency,
PW-82520N1/N3
Frequency,
PW-82520/82521N0
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
Output Voltage
Imax
ISOLATION
Case to Ground
COMMAND IN+/-
Differential Input
Input Offset
Input Offset Drift
COMMAND OUT
Internal Voltage Clamp
Slew Rate
Settling Time
ThERMAL (PW-82520N1/N3/N0, PW-82521N0)
Thermal Resistance
Junction-Case
Case-Air
Junction Temperature
Case Operating Temperature
Case Storage Temperature
LEAD SOLDER
WEIGhT
PW-82520N1/N3/N0, PW-82521N0
SYMBOL
V
dr
I
dr
I
dr
V
cc
I
cc
V
dd
I
dd
V
ee
I
ee
V
Il
V
IH
d.c.
R
In
Vp+
Vp-
f
pwm
f
pwm
LIN
D.C.
f
pwm
Full Temp Range
V
Il
V
IH
V
Il
V
IH
V
ol
I
o
@ 1mA
Vcc = 4.5 - 5.5V
Vcc = 4.5 - 5.5V
2.3
-2.8
10
10
-2
49
+15V
+15V
-15V
-15V
ENABLE = high
ENABLE = low
+4.5
TEST CONDITIONS
MIN
+13.5
TYP
+15.0
300
30
+5.0
10
MAX
+16.5
40
+5.5
15
+16.5
50
-4.5
50
1.5
3.5
49
110
50
10
2.5
-2.5
2.8
-2.3
110
55
+2
51
51
UNITS
Vdc
µA
mA
Vdc
mA
Vdc
mA
Vdc
mA
Vdc
Vdc
%
%
KΩ
V
V
KHz
KHz
%
%
+4.5
35
-16.5
30
50
95
47.5
100
50
0.5
105
52.5
2.0
1.5
KHz
KHz
%
Vdc
Vdc
Vdc
Vdc
Vdc
mA
MΩ
3.5
1.5
3.5
0.4
10
10
-4
2
+4
800
500 Vdc HIPOT
V
cmd
Vdc
µV
µV/°C
Vdc
V/µs
µs to 0.1%
V
clamp
V
o
= 0.2 to 4.5V
-5.8
3
1.4
+5.8
θj-c
θc-a
Tj
T
c
T
cs
-55
-65
4
5.5
+150
+125
+150
10sec
@300°C
1.7 (48)
°C/W
°C/W
°C
°C
°C
oz (g)
Data Device Corporation
www.ddc-web.com
5
PW-82520/21N
K-8/08-0
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