MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
600V/150A
THREE PHASE BRIDGE
PEM WITH BRAKE
4853
FEATURES:
Replaces MSK4850
Full Three Phase Bridge Configuration with SCR/IGBT Brake
600V Rated Voltage
150A Continuous Output Current
Internal Zener Clamps on Gates
Proprietary Encapsulation Provides Near Hermetic Performance
HI-REL Screening Available (Modified 38534)
Light Weight Domed ALSIC Baseplate
Robust Mechanical Design for Hi-Rel Applications
Ultra-Low Inductance Internal Layout
Withstands 96 Hours HAST and Thermal Cycling (-55°C to +125°C)
DESCRIPTION:
The MSK4853 is one of a family of plastic encapsulated modules (PEM) developed specifically for use in military, aerospace
and other severe environment applications. The Three Phase Bridge configuration along with the SCR/IGBT brake circuit and
600 volt/150 Amp rating make it ideal for use in high current motor drive and inverter applications. The Aluminum Silicon Carbide
(AlSiC) baseplate offers superior flatness and light weight; far better than the copper or copper alloys found in most high power
plastic modules. The high thermal conductivity materials used to construct the MSK4853 allow high power outputs at elevated
baseplate temperatures. Our proprietary coating, SEES™ - Severe Environment Encapsulation System - protects the internal
circuitry of MSK PEM's from moisture and contamination, allowing them to pass the rugged environmental screening requirements of military and aerospace applications. MSK PEM's are also available with industry standard silicone gel coatings for a
lower cost option.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Motor Drives
Inverters
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8548-20 Rev. F 12/14
8
ABSOLUTE MAXIMUM RATING
VCE
VGE
IOUT
IOUTP
VCASE
Collector to Emitter Voltage
Gate to Emitter Voltage
Current (Continuous)
Current Pulsed (1mS)
Case Isolation Voltage
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TST
TJ
TC
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600V
±20V
150A
300A
2500 V
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Storage Temperature Range 9 -55°C to +125°C
150°C
Junction Temperature
Case Operating Temperature Range
-55°C to +125°C
MSK4853H
-40°C to +85°C
MSK4853
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ELECTRICAL SPECIFICATIONS
NOTES:
1
2
3
4
5
6
7
8
9
Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade devices shall be tested to subgroup 1 unless otherwise specified.
HI-REL grade devices ("H" suffix) shall be 100% tested to subgroups 1, 2 and sample tested to subgroup 3.
Subgroup 4 testing available upon request.
Subgroup 1, 4 T A = +25°C
2, 5 T A = +125°C
3
TA = -55°C
All specifications apply to both the upper and lower sections of the half bridge.
V GE =15V unless otherwise specified.
Continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle.
Internal solder reflow temperature is 180°C, do not exceed.
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8548-20 Rev. F 12/14
APPLICATION NOTES
THERMAL CALCULATIONS
Power dissipation and maximum allowable temperature rise involve many variables working together. Collector current,
PWM duty cycle and switching frequency all factor into power dissipation. DC losses or "ON-TIME" losses are simply
VCE(SAT) x Collector Current x PWM duty cycle. For the MSK4853, VCE(SAT)=1.9V max., and at 150 amps and a PWM duty
cycle of 30%, DC losses equal 86 watts. Switching losses, in milli-joules, vary proportionally with switching frequency. The
MSK4853 typical switching losses at VCE=300V and ICE=150A are about 9mJ, which is simply the sum of the turn-on switching
loss and the turn-off switching loss. Multiplying the switching frequency times the switching losses will result in a power
dissipation number for switching. The MSK4853, at 15KHz, will exhibit switching power dissipation of 135 watts. The total
losses are the sum of DC losses plus switching losses, or in this case, 221 watts total.
221 watts x 0.26°C/W thermal resistance equals 57.5 degrees of temperature rise between the case and the junction.
Subtracting 57.5°C from the maximum junction temperature of 150°C equals 92.5°C maximum case temperature for this
example.
VCE(SAT) x IC x PWM duty cycle = 1.9V x 150 amps x 30% = 86 watts DC losses
Turn-on switching loss + Turn-off switching loss = Total switching losses = 2.5mJ + 6.5mJ = 9mJ
Total switching loss x PWM frequency = Total switching power dissipation = 9mJ x 15KHz = 135 watts
Total power dissipation = DC losses + switching losses = 86 + 135 = 221 watts
Junction temperature rise above case = Total power dissipation x thermal resistance
221 watts x 0.26°C/W = 57.5°C temperature rise above case
Maximum junction temperature - junction temperature rise = maximum baseplate temperature
150°C - 57.5°C = 92.5°C
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8548-20 Rev. F 12/14
TYPICAL PERFORMANCE CURVES
4
8548-20 Rev. F 12/14
TYPICAL PERFORMANCE CURVES CONT'D
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8548-20 Rev. F 12/14
SCREENING CHART
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8548-20 Rev. F 12/14
MECHANICAL SPECIFICATIONS
WEIGHT = 410 GRAMS MAX.
ALL DIMENSIONS ARE SPECIFIED IN INCHES
FOR CONVEX BASEPLATE PROFILE SEE SHEET 8
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8548-20 Rev. F 12/14
MECHANICAL SPECIFICATIONS CONT'D
ORDERING INFORMATION
MSK4853 H
SCREENING
BLANK=INDUSTRIAL
H=HI-REL (MODIFIED 38534)
GENERAL PART NUMBER
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8548-20 Rev. F 12/14
REVISION HISTORY
MSK
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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8548-20 Rev. F 12/14