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ISO 9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
100 VOLT 10 AMP RAD-HARD H-BRIDGE PWM MOTOR DRIVER/AMPLIFIER
4204RH
(315) 701-6751
4707 Dey Road Liverpool, N.Y. 13088
FEATURES:
100 Volt, 10 Amp Capability Self-Contained Smart Lowside/Highside Drive Circuitry Internal PWM Generation, Shoot-through Protection Isolated Case Allows Direct Heatsinking Available Fully Screened To MIL-PRF-38534 Class K and Class H Total Dose Tested To 300K RAD Logic Level Shutdown Input Output Stage Includes Blocking Diodes
MIL-PRF-38534 CERTIFIED
DESCRIPTION:
The MSK 4204RH is a radiation hardened complete H-Bridge microcircuit intended for use in DC brushed motor control applications or Class D switchmode amplification in space or other severe operating environments. The internal components have been selected to provide total dose up to 300K RAD for military and space applications. All of the drive/control circuitry for the lowside and highside switches are internal to the device. 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 4204RH is packaged in a space efficient isolated power package, available in three lead form configurations that can be directly connected to a heatsink.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
1 2 3 4 5 6 7
1
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8 9 10 11 12 13 14
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15 16 17 18 19 20 21
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22 23 24 25 26 27 28
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PRELIMINARY Rev. - 10/05
ELECTRICAL SPECIFICATIONS
Parameter
Test Conditions 1
Subgroup Group A
4
MSK 4204RH 3 Min. Typ. Max.
Units
OUTPUT CHARACTERISTICS VDS(ON) Voltage (Diode plus MOSFET) 2 ID=10A 1 2 3 Instantaneous Forward Voltage
2
40
TBD TBD TBD TBD TBD TBD 0.06 25 100 25 45
TBD TBD TBD TBD TBD TBD 0.1 200 800 200 50
V V V V V V uA uA uA KHz
1 IS=10A 2 3
RDS (ON) each mosfet 2 6 Leakage Current, Each MOSFET 2
ID =10A TC =25C
1
V+=100V
2 3
PWM Frequency Vcc SUPPLY CHARACTERISTICS VIN=7.5V
4,5,6
Quiescent Current OUTPUT DUTY CYCLE
1,2,3
-
TBD
TBD
mA
VIN=7.5V Both Outputs Tested VIN=15V Output A=100% Duty Cycle High Output B = 0% Duty Cycle Low VIN=OV SWITCHING CHARACTERISTICS Rise-Time Fall-Time Dead-Time RL=1K A to B RL=1K A to B RL=50 A upper to A lower RL=50 B upper to B lower LOGIC CONTROL INPUTS Shutdown Input Input Voltage LO Input Voltage HI Input Current (High or Low) Output A=0% Duty Cycle Low Output B = 100% Duty Cycle High
4,5,6 7
40 -
50 Verify
60 -
% P/F
7
-
Verify
-
P/F
4 4 4 4
-
20 20 TBD TBD
100 100 TBD TBD
nS nS nS nS
1,2,3 1,2,3 1,2,3
2.0 -
100
0.8 250
V V uA
NOTES:
VCC=15V, V+=28V, RSENSE A,B=Ground, Shutdown=OV unless otherwise specified. Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only. Devices shall be 100% tested to subgroups 1,2,3,4, and 7. Subgroup 5 and 6 testing available upon request. Subgroup 1,4,7 TA=TC= +25C 2,5 TA=TC= +125C 3,6 TA=TC= -55C 5 Industrial grade and "E" suffix devices shall be 100% tested at 25C only. 6 The internal on resistance is for the die only. This should be used for thermal calculations only. 7 Consult factory for post radiation limits. 1 2 3 4
2
PRELIMINARY Rev. - 10/05
ABSOLUTE MAXIMUM RATINGS

1
-55C to +125C +175C 3.5C/W TBDC/W

NOTE:
1 Continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle.
APPLICATION NOTES MSK 4204RH 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. Optimum operation occurs with VCC set at 15V. 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 higher than 7.5V will produce greater than 50% duty cycle pulses out of OUTPUT A. A voltage lower than 7.5V will produce greater than 50% duty cycle pulses out of OUTPUT B. SHUTDOWN - Is the connection for disabling all 4 output switches. SHUTDOWN high overrides all other inputs. When taken low, everything functions normally. An internal pullup to Vcc will keep SHUTDOWN high if left unconnected. This pin should be grounded if not used.
AV+, BV+ - Are the high voltage H-bridge supply pins. The MOSFETS obtain the drive current from these supply pins. The voltage 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 ensure removal of any drooping during switching, should be done as close to the pins on the hybrid as possible. AO - Are the output pins for one half of the bridge. Increasing the input voltage causes increasing duty cycles at this output.
BO - Are the output pins for the other half of the bridge. Decreasing the input voltage causes increasing duty cycles at this output.
AV- - Are the connections 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 these pins is 5 volts with respect to GND. BV- - Are the connections 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 these pins is 5 volts with respect to GND.
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PRELIMINARY Rev. - 10/05

V+ VCC IOUT IPK VOUT VIN VL
High Voltage Supply 100V Logic Supply 16.5V Continuous Output Current 10A Peak Output Current 23A Output Voltage Range GND-5V min. to V+ max. Input Voltage Vcc Logic Input Voltage (Shutdown) OV to VCC
TST Storage Temperature Range TLD Lead Temperature Range (10 Seconds) TC Case Operating Temperature TJ Junction Temperature Jc Thermal Resistance (Output FETS @ 125C) (Ouput Diodes @ 125C)
-65C to +150C 300C
RADIATION PERFORMANCE CURVES
TBD
4
PRELIMINARY Rev. - 10/05
TYPICAL SYSTEM OPERATION
This is a diagram of a typical application of the MSK 4204RH. The design Vcc voltage is +15 volts and should have a good low ESR bypass capacitor such as a tantalum. 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 100V and negative spikes below -4V with respect to GROUND. 5 PRELIMINARY Rev. - 10/05
MECHANICAL SPECIFICATIONS
WEIGHT= TBD GRAMS TYPICAL ESD Triangle indicates Pin 1. ALL DIMENSIONS ARE 0.01 INCHES UNLESS OTHERWISE LABELED
ORDERING INFORMATION
MSK4204 H RH U
LEAD CONFIGURATIONS S= STRAIGHT; U= BENT UP; D= BENT DOWN RADIATION HARDENED SCREENING BLANK= INDUSTRIAL; E=EXTENDED RELIABILITY H=MIL-PRF-38534 CLASS H; K= MIL-PRF-38534 CLASS K GENERAL PART NUMBER The above example is a Military grade class H hybrid with leads bent up.
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, N.Y. 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. Contact MSK for MIL-PRF-38534 Class H, Class K and Appendix G (radiation) status.
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PRELIMINARY Rev. - 10/05

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