MSK MSK4470D, MSK4470S, MSK4470U Datasheet

ISO 9001 CERTIFIED BY DSCC

10 AMP, 500V, 3 PHASE

IGBT BRUSHLESS

M.S.KENNEDY CORP.

MOTOR CONTROLLER

4707 Dey Road Liverpool, N.Y. 13088 (315) 701-6751

FEATURES:

MIL-PRF-38534 QUALIFIED

500 Volt Motor Supply Voltage

10 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

DESCRIPTION:

The MSK 4470 is a complete 3 Phase IGBT Bridge Brushless Motor Control System in a convenient isolated baseplate

package. The hybrid is capable of 10 amps of output current and 500 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 transis-

tors are modulated in locked anti-phase (complementary) mode for the tightest control and the most bandwidth. Provisions

for applying different compensation schemes are included. The MSK 4470 has good thermal conductivity of the MOSFET's

due to isolated package design that allows direct heat sinking of the hybrid without insulators.

4470

BLOCK DIAGRAM

TYPICAL APPLICATIONS

3 Phase Brushless DC Motor Control

Servo Control

Fin Actuator Control

Gimbal Control

AZ-EL Control

N/C

REFOUT

HALL A

HALL B

HALL C

60/120

BRAKE

CLOCK SYNC

DIS

GND

N/C

PIN-OUT INFORMATION

E/A OUT

E/A-

GND

+Current Command

-Current Command

+15 VIN

Current Monitor Out

-15 VIN

N/C

GND

N/C

LGND

N/C

RTN

N/C

CVS

N/C

CV+

N/C

BVS

N/C

BV+

N/C

AVS

N/C

AV+

Rev. B 10/00

ABSOLUTE MAXIMUM RATINGS

High Voltage Supply

Current Command Input

Logic Inputs

REFOUT External Load

E/A OUT External Load

Clock SYNC Input

Continuous Output Current

Peak Output Current

○○○○○○○○○○○○○○○○○

○○○○○○○○○○○○

○○○○○○○○○○○○○

○○○○○○○○○○○○○○

○○○○○○○○○○○

○○○○○○○○○

○○○○○○○○○○○○○

-0.2V to REFOUT

ELECTRICAL SPECIFICATIONS

500V

±13.5V

15 mA

5 mA

-0.2V to +15V

10 Amps

15 Amps

RθJC

Thermal Resistance (Output Switches)

TST

Storage Temperature Range

TLD

Lead Temperature Range

○○○○○○○○○○○○○

(10 Seconds)

Case Operating Temperature

Junction Temperature

○○○○○○○○○○○○○○○

○○○○○

0.6°C/W

-40°C to +150°C

+300°C

-40°C to +125°C

+150°C

Parameter

INPUT CURRENT

+15 VIN

-15 VIN

PWM

Clock Free Running Frequency

CLOCK SYNC INPUT

VIL

VIH

Duty Cycle

SYNC Frequency

LOGIC INPUTS

(Hall A,B,C,Brake,60°/120°,DIS)

VIL

VIH

ANALOG SECTION

Current Command Input Range

Current Command Input Current

Transconductance

Offset Current

Current Monitor

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

Test Conditions

Output PWM'ing

Current Command=0 Volts

Current Command=0Volts

5mA Load

10 AMPS @ 150°C Junction

All switches off, V+=270V, 150°C Junction

10 AMPS

Min.

12.5

Clock +0

3.0

2.55

0.280

6.5

175

MSK 4470

Typ. Max.

0.33

6.5

275

2.5

Clock +3

0.8

±13.5

1.5

3.45

±50

0.380

±12

7.5

2.6

Units

KHz

VOLTS

KHz

VOLTS

A/V

V/A

VOLTS

V/µSec

MHz

V/mV

VOLTS

nSec

µSec

NOTES:

Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only.

Maximum power dissipation must be limited according to voltage regulator power dissipation.

Measurements do not include offset current at 0V current command.

Rev. B 10/00

APPLICATION NOTES

MSK 4470PIN 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.

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 current required by the motor. There

are no short circuit provisions for these outputs. Shorts to

V+ or ground from these pins must be avoided or the bridge

will be destroyed.

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.

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.

+15 VIN - is the input for applying +15 volts to run the low

power section of the hybrid. This pin should be bypassed

with a 10 µF capacitor and a 0.1 µF capacitor as close to this

pin as possible.

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.

BRAKE - is a pin for commanding the output bridge into a

motor BRAKE mode. When pulled low, normal operation com-

mences. When pulled high, the 3 high side bridge switches

turn off and the 3 low side bridge switches turn on, causing

rapid deceleration of the motor and will cease motor opera-

tion 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 fpr selecting the orientation of the commuta-

tion sheme of the motor. A high state will produce 60/300

degree commutation, whereas a low state will produce 120/

240 degree commutation. Logic levels for this input are TTL

compatible. It is internally pulled high.

-15 VIN - is the input for applying -15 volts to run the low

power section of the hybrid. 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 ±1 amp 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 ±10 amps of motor current.

CURRENT MONITOR- is a pin providing a current viewing sig-

nal for external monitoring purposes. This is scaled at ±1

amp of motor current per volt output, up to a maximum of

±10 volts, or ±10 amps. As ±10 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 ±12.5 amps of current peaks.

Rev. B 10/00

+ 4 hidden pages

MSK MSK4470D, MSK4470S, MSK4470U Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual