MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
M.S.KENNEDY
CORP.
M.S.
KENNEDY
CORP.
10 AMP, 100 VOLT
RAD HARD MOSFET
POWER 3-PHASE
MOTOR DRIVE HYBRID
4304RH
FEATURES:
100V, 10 Amp Capability
Ultra Low Thermal Resistance - Junction to Case - 2.5°C/W (Each MOSFET)
Self-Contained, Lowside/Highside Drive Circuitry
Bootstrap High-Side Supplies
Under-Voltage Lockout
Capable of Switching Frequencies to 25KHz
Isolated Case Allows Direct Heat Sinking
Bolt-down Design Allows Superior Heat Dissipation
Total Dose Hardened to 300 Krads(Si) (Method 1019.7 Condition A)
DESCRIPTION:
The MSK4304RH is a radiation hardened 10 Amp, 3 Phase Bridge Power Motor Drive Hybrid with a 100 volt maximum
rating on the output switches. The internal components have been selected to provide total dose tolerance for military and
space applications. The output switches are MOSFETs. This new power motor drive hybrid is 5.0 volt input logic compatible. Under-voltage lockout prevents the bridge from starting before the supply voltage rises high enough for complete turnon of the output switches. The internal high-side bootstrap power supply derived from the +VB supply completely eliminates the need for 3 floating independent power supplies.
EQUIVALENT SCHEMATIC
PIN-OUT INFORMATION
TYPICAL APPLICATIONS
TYPICAL APPLICATIONSPIN-OUT INFORMATION
3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE
OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE
1
1
2
3
4
5
6
7
8
9
10
H INA
20 V+
L INA
19 N/C
+VCC
18 AVH INB
17 AØ
L INB
16 N/C
COM
15 BV+VDD
14 BØ
+VB
13 N/C
H INC
12 CVL INC
11 CØ
CASE=ISOLATED
8548-35 Rev. J 8/14
7
ABSOLUTE MAXIMUM RATINGS
V+
+VDD
VH/LIN
IH/LIN
+VCC
+VB
IOUT
θJC
High Voltage Supply 9
Logic Supply
Logic Input Voltage
Logic Input Current
Lowside Supply
Highside Supply
Continuous Output Current
Thermal Resistance @ 125°C
(Output Switches,Junction to Case)
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I PK
TsT
TLD
TC
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100V
18V
VDD
10mA
18V
18V
10A
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Peak Output Current
14A
Storage Temperature Range 10 -65° to +150°C
Lead Temperature Range
(10 Seconds)
300°C
Case Operating Temperature
MSK4304RH
-40°C to +85°C
MSK4304KE/HE RH
-40°C to +125°C
Junction Temperature
+150°C
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TJ
2.5°C/W
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ELECTRICAL SPECIFICATIONS
Parameters
Test Conditions 8
3
GROUP A
SUBGROUP MSK4304KE/HE RH
Min. Typ. Max.
5
2
MSK4304RH
UNITS
Min. Typ. Max.
OUTPUT CHARACTERISTICS
1
2
3
1
2
3
1
2
3
-
-
0.8
1.4
0.6
1
10
1
-
0.08
0.16
0.08
1.5
2.4
1.2
25
250
25
370
-
0.8
1
-
0.08
1.6
25
370
Ω
Ω
Ω
volts
volts
volts
μA
μA
μA
nS
1
1
1
-
-
1.2
250
850
-
-
1.2
250
850
V
ns
nC
+VDD=15V
1,3
2
1,3
2
1,2,3
-
0.02
0.02
4.5
2
6
2
6
9
-
0.02
0.02
4.5
2
6
2
6
9
mA
mA
mA
mA
mA
+VCC=15V
+VCC=15V
+VDD
VIN=+5V
All Inputs
VIN=0V
E(ON)
E(OFF)
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
4
4
0.8
8.0
-10
-
2.3
1.8
10
25
-1.2
TBD
TBD
3.0
12.0
75
-
0.8
8.0
-10
-
Drain-Source ON Resistance 1
(each MOSFET) (for thermal calculations only)
IDS=10A
Drain-Source Voltage (VDS(on))
(each MOSFET)
IDS=10A
Leakage Current (Each MOSFET)
1
1
V+ = 80V
V+ = 80V
V+ = 80V
ID=10A, di/dt=100A/μS
Reverse Recovery Time 1
BODY DIODE CHARACTERISTICS
VSD Diode Forward Voltage 1
IS=18A, VGS=0V
TRR Reverse Recovery Time 1
IF=18A
QRR Reverse Recovery Charge 1 di/dt<100A/us, VDD<25V
BIAS SUPPLY CHARACTERISTICS
+VCC Bias Current
+VB Bias Current
+VDD Bias Current
INPUT SIGNAL CHARACTERISTICS
Positive Trigger Threshold Voltage
Negative Trigger Threshold Voltage
Under-voltage Lockout 6
Logic Input Current
Switching Loss Inductive Load 1
+VCC=15V
+VB=15V
2.3 3.0
1.8
10 12.0
75
25
-1.2
TBD
TBD
volts
volts
volts
μA
μA
μJ
μJ
NOTES:
1
2
3
4
5
6
7
8
9
10
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 subgroups 1 unless otherwise specified.
Space and Military grade devices ("KE & HE" suffix) shall be 100% tested to subgroups 1, 2 and 3.
Subgroups 5 and 6 testing available upon request.
Subgroup 1, 4 TA=TC=+25°C
2, 5 TA=TC=+125°C
3, 6 TA=TC=-40°C for 'KE' and 'HE' SUFFIXES
See UVLO paragraph in the application notes section.
Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle.
Pre and post irradiation limits at 25°C, up to 300Krad TID, are identical unless otherwise specified.
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.
Internal solder reflow temperature is 180°C, do not exceed.
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8548-35 Rev. J 8/14
TYPICAL PERFORMANCE CURVE
3
8548-35 Rev. J 8/14
APPLICATION NOTES
MSK 4304RH PIN DESCRIPTIONS
+VCC - Is the low voltage supply for the lowside drivers. A 0.1 μF ceramic capacitor in parallel with a 10μF
tantalum capacitor is the recommended bypassing from
the +VCC pin to the COM pin.
+VDD - Is the low voltage supply for the input logic to
the hybrid. A 0.1 μF ceramic capacitor in parallel with
a 4.7μF tantalum capacitor is the recommended bypassing to the COM pin.
+VB - Is the connection used to provide power to the
floating high-side bootstrap supplies in the gate drive
circuitry.
V+ - Is the high voltage positive rail connection to the
tops of the three half bridges. Proper power supply
bypassing must be connected from this pin to the COM
pin for good filtering. This bypassing must be done as
close to the hybrid as possible. +VCC, +VDD and +VB
should be present and stable whenever V+ is present.
H INA, H INB, H INC - Are active high logic inputs for
signalling the corresponding phase high-side switch to
turn on. The logic inputs are compatible with standard
LSTTL/CMOS outputs. These inputs are clamped to VDD
and COM, they must be limited to less than 10mA if
they are allowed to exceed those limits.
L INA, L INB, L INC - Are active high inputs for signalling the corresponding phase low-side switch to turn
on. The logic inputs are compatible with standard
LSTTL/CMOS outputs. These inputs are clamped to VDD
and COM, they must be limited to less than 10mA if
they are allowed to exceed those limits.
AØ, BØ, CØ - Are the pins connecting the 3 phase
bridge switch outputs.
AV-, BV-, CV- - Are the connections from the bottoms
of the three half bridges. These pins get connected to
the COM pin. If current sensing is desired they may be
connected to the COM pin through a low value sense
resistor.
UVLO - The under voltage lockout function of the MSK4304RH
prevents the device from starting before sufficient bias voltage is available. The UVLO feature monitors the VDD supply
and holds the outputs low until the voltage level rises above
the threshold during start up. After start up the UVLO circuit
will hold the low side switches off if VDD falls below the threshold but the high side switches will not be controlled by UVLO
after start up.
MAXIMUM DUTY CYCLE AND HIGH SIDE BIAS - The
MSK4304RH uses three independent bootstrap circuits to
power each of the high side switches. When the switches are
turned on the high side drivers are powered by the charge
in the bootstrap capacitors. The voltage on the bootstrap
capacitors has an initial 1.2V drop and decays at a rate of
approximately 0.5V every 100μS. The voltage can be approximated by the equation:
VBS = +VB - 1.2V - 5 x TON
TON is the switch on time in mS
VBS is the bootstrap capacitor voltage
VBS should be greater than or equal to 10 volts for maximum gate drive. If VBS falls too low loss of high side control my result.
The lowside switches must be activate every cycle or held
active during static operation to provide a return path for
charging the highside bootstrap capacitor and prevent loss
of highside control.
TOTAL DOSE RADIATION TEST
PERFORMANCE
Radiation performance curves for TID testing have been
generated for all radiation testing performed by MS Kennedy.
These curves show performance trends throughout the TID
test process and can be located in the MSK4304RH radiation
test report. The complete radiation test report is available in
the RAD HARD PRODUCTS section on the MSK website.
http://www.mskennedy.com/store.asp?pid=9951&catid=19680
COM - Is the connection that all hybrid power supply
connections are returned to and bypassed to.
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8548-35 Rev. J 8/14
TYPICAL SYSTEM OPERATION
The MSK4304RH is designed to be used with a +28 volt high voltage bus, +15 volt low power bus and +5 volt logic
signals. Proper derating should be applied when designing the MSK4304RH into a system. High frequency layout techniques with ground planes on a printed circuit board is the only method that should be used for circuit construction. This will
prevent pulse jitter caused by excessive noise pickup on the current sense signal or the error amp signal.
Ground planes for the lower power circuitry and the high power circuitry should be kept separate. The connection
between the bottom of the current sense resistor, COM pin and the high power ground, AV-, BV- and CV- pins are
connected at this point. This is a critical path and high currents should not be flowing between the current sense and
COM. Inductance in this path should be kept to a minimum. An RC filter will filter out the current spikes and keep the
detected noise for those circuits down to a minimum.
In the system shown a PWM pulse by pulse current limit scheme controlled by the motor controller is implemented.
When controlling the motor speed by the PWM method, it is required that the low side switches be PWM pulsed to
ensure sufficient bootstrap capacitor charge to power the high side switch drives. The higher the PWM speed the
higher the current load on the drive supply.
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8548-35 Rev. J 8/14
MECHANICAL SPECIFICATIONS
CONTAINS INTERNAL BeO (BERYLLIUM OXIDE)
ALL DIMENSIONS ARE SPECIFIED IN INCHES
ESD TRIANGLE INDICATES PIN 1
WEIGHT=42 GRAMS TYPICAL
ORDERING INFORMATION
MSK4304
RH U
LEAD CONFIGURATIONS
S=STRAIGHT; U=BENT UP; D=BENT DOWN
SCREENING
BLANK=INDUSTRIAL; HE=MIL-PRF-38534 CLASS H (REDUCED TEMP);
KE=MIL-PRF-38534 CLASS K (REDUCED TEMP);
GENERAL PART NUMBER
6
8548-35 Rev. J 8/14
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 version of this datasheet.
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8548-35 Rev. J 8/14