REFOUT

13 E/A -

25+REG IN

37 BØ

HALL A

14 GND

26 LGND

38 BV+

HALL B

15 +Current Command

27 RTN

39 AVS

HALL C

16 -Current Command

28 RTN

40 AVS

60 /120

17 +15 VIN

29 CVS

41 AØ

BRAKE

18 Current Monitor Out

30 CVS

42 AØ

CLOCK SYNC 19 -15 VIN

31 CØ

43 AV+

DIS

20 -REG IN

32 CØ

GND

21 L1

33 CV+

10 N/C

22 -15 VOUT

34 BVS

11 N/C

23 GND

35 BVS

12 E/A OUT

24 +15 VOUT

36 BØ

75 Volt Motor Supply Voltage
30 Amp Output Switch Capability
100% Duty Cycle High Side Conduction Capable
Shoot-Through/Cross Conduction Protection
Hall Sensing and Commutation Circuitry on Board
"Real" Four Quadrant Torque Control Capability
Good Accuracy Around the Null Torque Point
Isolated Package Design for High Voltage Isolation Plus Good Thermal Transfer
60°/ 120º Phasing Selectable
Plus and Minus 15 Volt Regulated Voltage Outputs are available for Powering Other Circuitry.

4707 Dey Road Liverpool, N.Y. 13088

(315) 701-6751

M.S.KENNEDY CORP.

4362

30 AMP, 75V, 3 PHASE

MOSFET BRUSHLESS

MOTOR CONTROLLER

BLOCK DIAGRAM

DESCRIPTION:

The MSK 4362 is a complete 3 Phase MOSFET Bridge Brushless Motor Control System in a convenient isolated
hermetic package. The hybrid is capable of 30 amps of output current and 75 volts of DC bus voltage. It has the
normal features for protecting the bridge. Included is all the bridge drive circuitry, hall sensing circuitry, commutation
circuitry and all the current sensing and analog circuitry necessary for closed loop current mode (torque) control.
When PWM'ing, the transistors are modulated in locked anti-phase mode for the tightest control and the most
bandwidth. Provisions for applying different compensation schemes are included. The MSK 4362 has good thermal
conductivity of the MOSFET's due to isolated package design that allows direct heat sinking of the hybrid without
insulators.

FEATURES:

Rev. G 2/05

TYPICAL APPLICATIONS

3 Phase Brushless DC Motor Control
Servo Control
Fin Actuator Control
Gimbal Control
AZ-EL Control

PIN-OUT INFORMATION

MIL-PRF-38534 CERTIFIED

ISO 9001 CERTIFIED BY DSCC

Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.
Industrial grade devices and "E" suffix shall be tested to subgroups 1 and 4 unless otherwise specified.
Military grade devices ("H" 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, 5 TA

= TC =+125°C

3, 6 TA

= TC =

-55°C

Maximum power dissipation must be limited according to voltage regulator power dissipation.
Hybrid powered by external ±15V supplies.
Measurements do not include offset current at 0V current command.
Continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle.

5,6

1,2,3

5,6

2,3

5,6

INPUT CURRENT

+15 VIN

-15 VIN

PWM

CLOCK SYNC INPUT

VIL

VIH

Duty Cycle

SYNC Frequency

REGULATORS

+15 VOUT

-15 VOUT

REFOUT

-15 VOUT Ripple

LOGIC INPUTS

(Hall A,B,C,Brake,60°/120°,DIS)

VIL

VIH

ANALOG SECTION

Current Command Input Range

Current Command Input Current

Current Monitor Voltage Swing

ERROR AMP

E/A OUT Swing

Slew Rate

Gain Bandwidth Product

Large Signal Voltage Gain

OUTPUT SECTION

Voltage Drop Across Bridge (1 Upper & 1 Lower)

Leakage Current

Diode VSD

trr

Dead Time

Output PWM'ing

Current Command=0 Volts

25mA Load

15mA Load

50mA Load

5mA Load

30 AMPS

30 AMPS @ 150°c Junction

All switches off, V+=60V, 150°C Junction

High Voltage Supply (internal regulators disabled)
High Voltage Supply (using internal regulators)
Current Command Input
Logic Inputs
±15VOUT External Load
REFOUT External Load
E/A OUT External Load
Clock SYNC Input
Continuous Output Current
Peak Output Current

75V
55V

±13.5V

-0.2V to REFOUT

±25 mA

15 mA

5 mA

-0.2V to +15V

30 Amps
41 Amps

Rev. G 2/05

ELECTRICAL SPECIFICATIONS

ABSOLUTE MAXIMUM RATINGS

Thermal Resistance (Output Switches)
Thermal Resistance (Regulator)
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Case Operating Temperature
MSK4362
MSK4362H/E
Junction Temperature

1.5°C/W

9°C/W

-65°C to +150°C

+300°C

-40°C to +125°C
-55°C to +125°C

+150°C

Parameter

Units

MSK 4362

Test Conditions

KHz
KHz

VOLTS

KHz

VOLTS

A/V

V/A

VOLTS

V/µSec

MHz

V/mV

VOLTS

µA

VOLTS

nSec

µSec

Min.

Typ.

Max.

MSK 4362H/E

Min.

Typ.

Max.

Group A

Subgroup

18.7

12.5

Clock +0

14.25

-14.25

5.82

3.0

-13.5

2.70

2.55

-25

-50

0.300

0.280

-12

6.5

175

25.3

2.5

Clock +3

15.75

-15.75

6.57

250

0.8

+13.5

1.5

3.30

3.45

0.367

0.380

+12

-
-

1.83

750

2.6

-
-

12.5

Clock +0

14.25

-14.25

5.82

3.0

-13.5

2.55

-50

0.280

-12

6.5

175

68
30

0.33

6.5

275

280

2.5

Clock +3

15.75

-15.75

6.57

250

0.8

+13.5

1.5

3.45

0.380

+12

-
-

1.83

750

2.6

-
-

Transconductance

Offset Current

Current Monitor

Clock Free Running Frequency

1
2
3
4
5

6
7
8
9

NOTES:

Current Command=0Volts

22
22

-
-

3
0

0.33

6.5

275

-
-

280

APPLICATION NOTES

MSK 4362 PIN DESCRIPTIONS

AV+, BV+, CV+ - are the power connections from the hy-
brid to the bus. The pins for each phase are brought out
separately and must be connected together to the V+ source
externally. The external wiring to these pins should be sized
according to the RMS current required by the motor. These
pins should be bypassed by a high quality monolithic ceramic
capacitor for high frequencies and enough bulk capacitance
for keeping the V+ supply from drooping. 78 µF of ceramic
capacitance and 6200 µF of bulk capacitance was used in
the test circuit. The voltage range on these pins is from 16
volts up to 75 volts.

AØ, BØ & CØ- are the connections to the motor phase wind-
ings from the bridge output. The wiring to these pins should
be sized according to the required current by the motor. There
are no short circuit provisions for these outputs. Shorts to
V+ or gound from these pins must be avoided or the bridge
will be destroyed.

AVS, BVS, CVS - are the return pins on the bottom of each
half bridge. They are brought out separately and should be
connected together externally to allow the current from each
half bridge to flow through the sense resistor. The wiring on
these pins should be sized according to the current require-
ments of the motor.

RTN - is the power return connection from the module to the
bus. All ground returns connect to this point from internal to
the module in a star fashion. All external ground connections
to this point should also be made in a similar fashion. The
V+ capacitors should be returned to this pin as close as
possible. Wire sizing to this pin connection should be made
according to the required current.

LGND - is an isolated ground connection to the RTN pin of
the hybrid that is connected internally. For any circuitry that
needs to be connected to the RTN pin without the influence
of current flow through RTN should be connected at this
point.

GND - is a ground pin that connects to the ground plane for
all low powered circuitry inside the hybrid.

+REG IN - is the input pin for applying power to the internal
+15V regulator. To use the regulator, connect the +REG IN
pin to the motor bus (V+). See regulator app. note for more
info on input voltage. If the +15V regulator is not needed,
no connection should be made to +REG IN and +15 VOUT.
+15 volts will have to be supplied from an external source to
+15VIN. Absolute maximum voltage on this pin is 55 volts.
See voltage regulator portion of app. note for additional infor-
mation.

+15 VOUT- is a regulated +15 volt output available for ex-
ternal uses. Up to 25 mA is available at this pin. A 100
microfarad capacitor should be connected as close to this pin
as possible and returned to GND along with a 0.22 micro-
farad monolithic ceramic capacitor. CAUTION: See Voltage
Regulator Power Dissipation.

+15 VIN - is the input for applying +15 volts to run the low
power section of the hybrid. This pin should be connected to
+15 VOUT if running off of the internal regulator. The re-
quired bypassing of the +15 VOUT pin is sufficient in this
case. For bringing in external +15 volts, this pin should be
bypassed with a 10 µF capacitor and a 0.1 µF capacitor as
close to this pin as possible.

-REF IN - is the input pin for applying power to the internal
-15V DC - DC converter. To use the converter, connect the
-REG IN pin to +15 VOUT pin. If the -15V converter is not
needed, no connection should be made to -REG IN and -15
VOUT. -15 volts will have to be supplied from an external
source to -15VIN. Also, L1 can be left open. See voltage
regulator portion of app. note for additional information.

L1 - is a pin for connecting an external inductor to the DC -
DC converter for generating -15 volts. A 47 µH inductor
capable of running at 250 KHz and about 1 amp of DC cur-
rent shall be used. Connect the inductor between L1 and
GND.

-15 VOUT - is a regulated -15 volt output available for exter-
nal uses. Up to 25 mA is available at this pin. A 100 micro-
farad capacitor should be connected as close to this pin as
possible and returned to GND along with a 0.22 microfarad
monolithic ceramic capacitor. CAUTION: See Voltage Regu-
lator Power Dissipation

-15 VIN - is the input for applying -15 volts to run the low
power section of the hybrid. This pin should be connected to
-15 VOUT if running off of the internal regulator. The re-
quired bypassing of the -15 VOUT pin is sufficient in this
case. For bringing in -15 volts, this pin should be bypassed
with a 10 µF capacitor and a 0.1 µF capacitor as close to this
pin as possible.

CURRENT COMMAND (+,-) - are differential inputs for con-
trolling the module in current mode. Scaled at ±3 amps per
volt of input command, the bipolar input allows both forward
and reverse current control capability regardless of motor com-
mutation direction. The maximum operational command volt-
age should be ±10 volts for ±30 amps of motor current.

CURRENT MONITOR- is a pin providing a current viewing sig-
nal for external monitoring purposes. This is scaled at ±3
amps of motor current per volt output, up to a maximum of
±10 volts, or ±30 amps. As ±30 amps is exceeded, the
peaks of the waveform may become clipped as the rails of
the amplifiers are reached. This voltage is typically ±12.5
volts, equating to ±37 amps of current peaks.

E/A OUT - is the current loop error amp output connection.
It is brought out for allowing various loop compensation cir-
cuits to be connected between this and E/A-.

E/A- -is the current loop error amp inverting input connec-
tion. It is brought out for allowing various loop compensa-
tion circuits to be connected between this and E/A OUT.

CLOCK SYNC- is an input for synchronizing to an external
clock. The sync circuit will trigger on the edges of the ap-
plied clock and effectively shorten the period of the internal
oscillator on each cycle. The frequency can be increased
from a free running 22 KHz to 25 KHz maximum. The clock
applied shall be 15 volts amplitude with at least a 10% duty
cycle.

REFOUT - is a 6.25 volt regulated output to be used for pow-
ering the hall devices in various motors. Up to 15 mA of
output current is available.

HALL A, B & C - are the hall input pins from the hall devices
in the motor. These pins are internally pulled up to 6.25
volts. The halls can reflect a 120/240 degree commutation
scheme or a 60/300 degree scheme.

Rev. G 2/05

BRAKE - is a pin for commanding the output bridge
into a motor BRAKE mode. When pulled low, nor-
mal operation commences. When pulled high, the
3 high side bridge switches turn off and the 3 low
side bridge switches turn on, causing rapid decel-
eration of the motor and will cease motor operation
until pulled high again. Logic levels for this input
are TTL compatible. It is internally pulled high.

DIS - is a pin for externally disabling the output
bridge. A TTL logic low will enable the bridge and a
TTL logic high will disable it. It is internally pulled
up by a 100 µAmp pullup.

60/120- is a pin for selecting the orientation of the
commutation scheme of the motor. A high state
will produce 60/300 degree commutation, whereas
a low state will produce 120/240 degree commuta-
tion. Logic levels for this input are TTL compatible.
It is internally pulled high.

APPLICATION NOTES CONTINUED

VOLTAGE REGULATOR POWER DISSIPATION - To figure volt-
age regulator power dissipation and junction temperature, use
the following as an example:

Given:
V+ = 28V, MSK 4362 +15V IQ = 85mA, -15V IQ = 40mA.
External Loads: +15V = 25 mA, -15V = 25 mA
-15V Converter Efficiency = 50%
P

DISS

due to +15V IQ, 85 mA x 13V = 1.11 W

DISS

due to -15V IQ, (40 mA / 0.5) x 13V = 1.04 W

DISS

due to +15V Ext load, 25 mA x 13V = 325 mW

DISS

due to -15V Ext load, (25 mA / 0.5) x 13V = 650 mW

DISS

Total = 1.11 W + 1.04 W + 325 mW+650 mW=3.13W

3.13 W x 9°C/W = 28.1°C RISE above case temperature
Maximum Case Temperature = 150°C - 28.1°C = 121.9°C

To lower power dissipation in the regulator, a dropping resistor
can be added in series from V+ to the +REG IN pin. Using the
above example, if V+ = 39V and there is no dropping resistor,
total power dissipation rises to about 5.76 watts. Temperature
rise is now 51.8°C above case temperature, limiting maximum
case temperature to 98.2°C. By adding a dropping resistor to
lower the +REG IN pin voltage to 24.1V, the regulator power
dissipation is lowered to 2.19 watts. Temperature rise is now
19.7°C above case temperature, allowing a maximum case tem-
perature all the way to +125°C.

Rev. G 2/05

ALTERNATE REGULATOR CONNECTION OPTIONS

By connecting the regulators in different ways, various capabilities can be obtained.

Higher than 55 volt operation -
For operation at higher than 55 volt motor bus voltages, there are three options available:

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