75 volt 6 amp mosfet h-bridge pwm motor driver

MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
M.S.KENNEDY CORP.
75 VOLT 6 AMP MOSFET
H-BRIDGE PWM MOTOR
DRIVER/AMPLIFIER
4223
FEATURES:
Low Cost Complete H-Bridge
6 Amp Capability, 75 Volt Maximum Rating
Self-contained Smart Lowside/Highside Drive Circuitry
Internal PWM Generation, Shoot-through Protection
Isolated Case Allows Direct Heatsinking
Logic Level Disable Input
Logic Level High Side Enable Input for Special Modulation or Function
Available With Leads Bent Up, Down or Straight
DESCRIPTION:
The MSK4223 is a complete H-Bridge circuit to be used for DC brushed motor control or Class D switchmode amplification. All of the drive/control circuitry for the lowside and highside switches are internal to the circuit. 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 MSK4223 is constructed on a space efficient ceramic substrate that can be directly connected to
a heatsink.
EQUIVALENT SCHEMATIC
PIN-OUT INFORMATION
TYPICAL APPLICATIONS
1
2
3
4
5
6
7
8
9
10
1
HEN
DISABLE
INPUT
GROUND
VCC
OUTPUT A
RSENSE A
V+
RSENSE B
OUTPUT B
8548-140 Rev. J 10/14
3
ABSOLUTE MAXIMUM RATINGS
V+
VCC
IOUT
IPK
VOUT
θJC
High Voltage Supply 4
75V
Logic Supply
16V
Continuous Output Current
6A
Peak Output Current
9A
Output Voltage Range GND-2V min. To V+ max.
Thermal Resistance
4.6°C/W
(Output Switches)
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TST
TLD
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TC
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TJ
ELECTRICAL SPECIFICATIONS
Parameter
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Storage Temperature Range 5 -65°C to +150°C
Lead Temperature Range
200°C
(10 Seconds Lead Only)
Case Operating Temperature
-40°C to +125°C
MSK4223
+150°C
Junction Temperature
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All Ratings: Tc= +25°C Unless Otherwise Specified
Test Conditions 2
MSK4223
Units
Min.
Typ.
Max.
Each MOSFET ID=6A
-
0.75
1.5
Each MOSFET IS=6A Intrinsic Diode
-
1.1
1.8
V
Intrinsic Diode
-
-
260
nS
Each MOSFET V+=70V
-
1.0
25
uA
225
250
275
KHz
-
46
60
mA
9
12
16
V
Output A,B=50% Duty Cycle
5.5
6
6.5
V
Analog Input Voltage
Output A=100% Duty Cycle High
2.5
3
3.5
V
Analog Input Voltage
Output B=100% Duty Cycle High
8.5
9
9.5
V
Input Voltage LO
-
-
0.8
V
Input Voltage HI
2.7
-
-
V
Input Current (DISABLE=0V)
-
-
-135
uA
Input Voltage LO
-
-
0.8
V
Input Voltage HI
2.7
-
-
V
Input Current (HEN=0V)
-
-
-270
uA
56
84
nS
OUTPUT CHARACTERISTICS
VDS(ON) Voltage 1
Instantaneous Forward Voltage 1
Reverse Recovery Time 1
Leakage Current 1
PWM Frequency
VCC
V
SUPPLY CHARACTERISTICS
Quiescent Bias Current
Analog Input=6VDC RL=∞
VCC Voltage Range 1
INPUT SIGNAL CHARACTERISTICS
Analog Input Voltage
LOGIC CONTROL INPUTS 1
Disable Input
HEN Input
SWITCHING CHARACTERISTICS 1
RL=100Ω
Rise-Time
V+=75V
-
Fall-Time
V+=75V
-
33
50
nS
-
100
-
nS
Dead-Time
NOTES:
1
2
3
4
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
VCC=+12V, V+=28V, RL=1K AOUT to BOUT, unless otherwise specified.
Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle.
When applying power to the device, apply the low voltage followed by the high voltage or alternatively, apply both at the
same time. Do not apply high voltage without low voltage present.
5 Internal solder reflow temperature is 180°C, do not exceed.
2
8548-140 Rev. J 10/14
APPLICATION NOTES
TYPICAL SYSTEM OPERATION
MSK4223 PIN DESCRIPTIONS
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 by-passing 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 of the module as possible.
OUTPUT A - Is the output pin for one half of the bridge.
Decreasing the input voltage causes increasing duty cycles
at this output.
OUTPUT B - Is the output pin for the other half of the
bridge. Increasing the input voltage causes increasing duty
cycles at this output.
RSENSE A - Is the connection for the bottom of the A half
bridge. This can have a sense resistor connection 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.
This is a diagram of a typical application of the MSK4223.
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.
IN
RSENSE B - Is the connection for the bottom of the B half
bridge. This can have a sense resistor connection 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.
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 module 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 the capacitor as close to the
module 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.
GND - Is the return connection for the input logic and VCC
INPUT - Is an analog input for controlling the PWM pulse
width of the bridge. A voltage lower than VCC/2 will produce greater than 50% duty cycle pulses out of OUTPUT
A. A voltage higher than VCC/2 will produce greater than
50% duty cycle pulses out of OUTPUT B.
DISABLE - Is the connection for disabling all 4 output
switches. DISABLE high overrides all other inputs. When
taken low, everything functions normally. An internal pullup
to VCC will keep DISABLE high if left unconnected.
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 ground.
HEN - Is the connection for enabling the high side output switches. When taken low, HEN overrides other inputs and the high side switches remain off. When HEN is
high everything functions normally. An internal pullup to
VCC will keep HEN high if left unconnected.
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8548-140 Rev. J 10/14
TYPICAL PERFORMANCE CURVES
4
8548-140 Rev. J 10/14
MECHANICAL SPECIFICATIONS
WEIGHT=7.9 GRAMS TYPICAL
TORQUE SPECIFICATION 3-5 IN./LBS.
TEFLON SCREWS OR WASHERS ARE RECOMMENDED.
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ORDERING INFORMATION
MSK4223
U
LEAD CONFIGURATIONS
S= STRAIGHT; U= BENT UP; D= BENT DOWN
GENERAL PART NUMBER
5
8548-140 Rev. J 10/14
REVISION HISTORY
M.S. Kennedy Corp.
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.
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8548-140 Rev. J 10/14
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