ISO 9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
75 VOLT 5 AMP MOSFET
H-BRIDGE PWM MOTOR
DRIVER/AMPLIFIER
4200
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 CERTIFIED
FEATURES:
Low Cost Complete H-Bridge
28 Volt, 5 Amp Capability, 75 Volt Maximum Rating
Self-contained Smart Lowside/Highside Drive Circuitry
Internal PWM Generation, Shoot-through Protection
Isolated Case Allows Direct Heatsinking
Four Quadrant Operation, Torque Control Capability
Available Fully Screened To MIL-PRF-38534
Replaces SA-50
DESCRIPTION:
The MSK 4200 is a complete H-Bridge hybrid to be used for DC brushed motor control or Class D switchmode
amplifier. All of the drive/control circuitry for the lowside and highside switches are internal to the hybrid. The PWM
circuitry is internal as well, leaving the user to only provide an analog signal for the motor speed/direction, or audio
signal for switchmode audio amplification. The MSK 4200 is packaged in a space efficient isolated 8 pin TO-3 that can
be directly connected to a heatsink.
EQUIVALENT SCHEMATIC
PIN-OUT INFORMATION
TYPICAL APPLICATIONS
1
2
3
4
1
RSENSE B
MOTOR B
V+
MOTOR A
5
6
7
8
RSENSE A
VCC
GND
INPUT
Rev. B 7/02
ABSOLUTE MAXIMUM RATINGS
V+
VCC
IOUT
IPK
VOUT
θJC
High Voltage Supply
75V
Logic Supply
16V
Continuous Output Current
5A
Peak Output Current
37A
Output Voltage Range
GND-2V min. To V+ max.
Thermal Resistance @ 125°C
2.3°C/W
(Output Switches)
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Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Case Operating Temperature
MSK4200
MSK4200B/E
Junction Temperature
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TC
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ELECTRICAL SPECIFICATIONS
Parameter
TST
TLD
TJ
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-65°C to +150°C
300°C
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-40°C to +85°C
-55°C to +125°C
+175°C
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All Ratings: Tc= +25°C Unless Otherwise Specified
Test Conditions
Subgroup
Group A
ID=5A
MSK 4200B/E 3
MSK 4200 2
Units
5
Min.
Typ.
Max.
Min.
Typ.
Max.
1
-
1.5
1.8
-
1.5
2.16
V
-
V
OUTPUT CHARACTERISTICS
VDS(ON) Voltage (Each MOSFET)
Instantaneous Forward Voltage, Each MOSFET IS=5A
1
(Intrinsic Diode)
PWM Frequency
-
2.2
2.4
-
-
3
-
1.1
1.2
-
-
-
V
1
-
1.0
2.1
-
1.0
2.2
V
2
-
0.9
2.0
-
-
-
V
-
V
3
-
1.1
2.2
-
-
-
-
-
240
-
-
240
nS
V+=70V
1
-
1.0
25
-
1.0
30
uA
V+=70V
2
-
2.0
250
-
-
-
uA
V+=70V
3
-
0.5
25
-
-
-
uA
VCC=12V
4
40
45
50
40
45
50
KHz
VCC=12V
1
-
15
20
-
15
20
mA
@ 50% Duty Cycle Output
2
-
15
20
-
-
-
mA
3
-
15
20
-
-
-
mA
-
6
-
-
6
-
V
-
V
Reverse Recovery Time (Intrinsic Diode)
Leakage Current, Each MOSFET
2
1
Vcc SUPPLY CHARACTERISTICS
Quiescent Bias Current
INPUT SIGNALS CHARACTERISTICS
Analog Input Voltage
VCC=12V, Motor A,B=50% Duty Cycle
-
Analog Input Voltage
VCC=12V, Motor A=100% Duty Cycle High
-
-
8
-
-
8
Analog Input Voltage
VCC=12V, Motor B=100% Duty Cycle High
-
-
4
-
-
4
-
V
-
36
54
-
36
-
nS
-
nS
-
nS
SWITCHING CHARACTERISTICS 1
V+=28V, VCC=12V, I C=2A
Rise-Time
-
Fall-Time
-
-
170
255
-
170
Dead-Time
-
-
100
-
-
100
30
NOTES:
1
2
3
4
5
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ("B" suffix) shall be 100% tested to subgroups 1,2,3 and 4.
Subgroups 5 and 6 testing available upon request.
Subgroup 1,4 TA=TC= +25°C
2
TA=TC= +125°C
3
TA=TC= -55°C
2
Rev. B 7/02
APPLICATION NOTES
MSK 4200 PIN DESCRIPTION
VCC - Is the low voltage supply for powering internal
logic and drivers for the lowside and highside MOSFETS.
The supplies for the highside drivers are derived from
this voltage.
V+ - Is the higher voltage H-bridge supply. The MOSFETS
obtain the drive current from this supply pin. The voltage
on this pin is limited by the drive IC. The MOSFETS are
rated at 100 volts. Proper bypassing to GND with sufficient capacitance to suppress any voltage transients, and
to ensure removing any drooping during switching, should
be done as close to the pins on the hybrid as possible.
MOTOR A - Is the output pin for one half of the bridge.
Increasing the input voltage causes increased duty cycles
at this output.
MOTOR B - Is the output pin for the other half of the
bridge. Decreasing the input voltage causes increased
duty cycles at this output.
IN
RSENSE A - This is the connection for the bottom of the A
half bridge. This can have a sense resistor connected to
the V+ return ground for current limit sensing, or can be
connected directly to ground. The maximum voltage on
this pin is ±2 volts with respect to GND.
GND - Is the return connection for the input logic and
Vcc.
RSENSE B - This is the connection for the bottom of the B
half bridge. This can have a sense resistor connected to
the V+ return ground for current limit sensing, or can be
connected directly to ground. The maximum voltage on
this pin is ±2 volts with respect to GND.
INPUT - Is an analog input for controlling the PWM pulse
width of the bridge. A voltage higher than Vcc/2 will
produce greater than 50% duty cycle pulses out of
MOTOR A. A voltage lower than Vcc/2 will produce
greater than 50% duty cycle pulses out of MOTOR B.
3
Rev. B 7/02
TYPICAL SYSTEM OPERATION
This is a diagram of a typical application of the MSK 4200. The design Vcc voltage is +12 volts and should have a good low
ESR bypass capacitor such as a tantalum electrolytic. The analog input can be an analog speed control voltage from a potentiometer,
other analog circuitry or by microprocessor and a D/A converter. This analog input gets pulled by the current control circuitry in the
proper direction to reduce the current flow in the bridge if it gets too high. The gain of the current control amplifier will have to be set
to obtain the proper amount of current limiting required by the system.
Current sensing is done in this case by a 0.1 ohm sense resistor to sense current from both legs of the bridge separately. It is
important to make the high current traces as big as possible to keep inductance down. The storage capacitor connected to the V+
and the hybrid should be large enough to provide the high energy pulse without the voltage sagging too far. A low ESR ceramic
capacitor or large polypropylene capacitor will be required. Mount capacitor as close to hybrid as possible. The connection between
GND and the V+ return should not be carrying any motor current. The sense resistor signal is common mode filtered as necessary
to feed the limiting circuitry for the microprocessor. This application will allow full four quadrant torque control for a closed loop
servo system.
A snubber network is usually required, due to the inductance in the power loop. It is important to design the snubber network
to suppress any positive spikes above 75V and negative spikes below -2V with respect to pin 5 (gnd).
4
Rev. B 7/02
MECHANICAL SPECIFICATIONS
ALL DIMENSIONS ARE ±0.01 INCHES UNLESS OTHERWISE LABELED
ORDERING INFORMATION
Part
Number
Screening Level
MSK4200
Industrial
MSK4200E
Extended Reliability
MSK4200B
Mil-PRF-38534 Class H
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make
changes to its products or specifications without notice, however, and assumes no liability for the use of its products.
Please visit our website for the most recent revision of this datasheet.
5
Rev. B 7/02