Datasheet MSK4322HD, MSK4322HS, MSK4322HU, MSK4322S, MSK4322U Datasheet (MSK)

ISO-9001 CERTIFIED BY DSCC

20 AMP, 200 VOLT MOSFET

SMART POWER 3-PHASE MOTOR

4322

M.S.KENNEDY CORP.

M.S. KENNEDY CORP.

4707 Dey Road Liverpool, N.Y. 13088 [phone]

FEATURES:

200V, 20 Amp Capability

Ultra Low Thermal Resistance - Junction to Case - 1.0°C/W (Each MOSFET)

Self-Contained, Smart Lowside/Highside Drive Circuitry

Under-Voltage Lockout, Internal 2µS Deadtime

Capable of Switching Frequencies to 25KHz

Isolated Case Allows Direct Heat Sinking

Case Bolt-down Design Allows Superior Heat Dissipation

DESCRIPTION:

The MSK 4322 is a 20 Amp, 3 Phase Bridge Smart Power Motor Drive Hybrid with a 200 volt rating on the

output switches. The output switches are power MOSFETs with intrinsic fast-recovery diodes for the free-

wheeling currents of motor drives. This new smart power motor drive hybrid is compatible with 5V CMOS or

TTL logic levels. The internal circuitry prevents simultaneous turn-on of the in-line half bridge transistors with a

built-in 2µS deadtime to prevent shoot-through. Undervoltage lockout shuts down the bridge when the supply

voltage gets to a point of incomplete turn-on of the output switches. The internal high-side boot strap power

supply derived from the +15 volt supply completely eliminates the need for 3 floating independent power sup-

plies for the high-side drive. Current sense circuitry is provided to sense current from an external resistor to shut

down the bridge for overcurrent.

DRIVE POWER HYBRID

MIL-PRF-38534 QUALIFIED

EQUIVALENT SCHEMATIC

TYPICAL APPLICATIONS PIN-OUT INFORMATION

TYPICAL APPLICATIONSPIN-OUT INFORMATION

3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE

OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE

1

2

3

4

5

6

7

8

9

10

VCC

AØHIN

BØHIN

CØHIN

AØLIN

FAULT

CØLIN

BØLIN

VSS

ITRIP

20

19

18

17

16

15

14

13

12

11

N/C

AØ

V+

N/C

N/C

BØ

N/C

N/C

CØ

COM

1

PRELIMINARY Rev. A 6/00

ABSOLUTE MAXIMUM RAT-

V+ High Voltage Supply. . . . . . . 200V

INGS

VCC Logic Supply . . . . . . . . . . 18V

IOUT Continuous Output Current . . . 20A

IPK Peak Output Current. . . . . . . 30A

θJC Thermal Resistance . . . . . . 1.0°C/W

(Output Switches) (Junction to Case)

ELECTRICAL SPECIFICATIONS

Storage Temperature Range

TsT

Lead Temperature Range(10 Seconds)

TLD

Case Operating Temperature

TC

MSK 4322

MSK 4322H

Junction Temperature

TJ

○○○○○○○○○○○○○○○○○

○○○○○○○○○○○○○○○○○

○○○○○○○○○○○○○○○○○

○○○○○○○○○

○○○○○○○○○

-65° to +150°C

300°C

-40°C to +85°C

-55°C to +125°C

+175°C

Parameters

OUTPUT CHARACTERISTICS

VDS(ON) (Each Transistor)

Instantaneous Forward Voltage

(Intrinsic Diode)

Reverse Recovery Time 1

Leakage Current

BIAS SUPPLY CHARACTERISTICS

Quiescent Bias Current

INPUT SIGNAL CHARACTERISTICS

Positive Trigger Threshold Voltage

Negative Trigger Threshold Voltage

SWITCHING CHARACTERISTICS

Upper Drive:

Turn-On Propagation Delay

Turn-Off Propagation Delay

Turn-On

Turn-Off

Lower Drive:

Turn-On Propagation Delay

Turn-Off Propagation Delay

Turn-On

Turn-Off

Dead Time 1

Minimum Pulse Width 1

Test Conditions

V+ = 200V

V+ = 160V

V+ = 200V

(non-switching)

V

CC = 15V

V

CC = 15V

1

V+ = 100V, V

V+ = 100V, V

ID = 20A

IS = 20A

VCC = 15V

CC = 15V, ID = 20A

CC = 15V, ID = 20A

GROUP A

SUBGROUP

5

1

2

3

1

2

3

-

1

2

3

1

2

3

1,2,3

1,2,3

-

-

-

-

-

-

-

-

-

-

MSK 4322H

Min. Typ. Max.

-

-

-

-

-

-

-

-

-

-

-

-

-

2.2

-

2.0

-

5.0

-

TBD

-

2.0

-

TBD

-

TBD

-

600

-

750

-

3.0

-

TBD

-

-

-

-

-

-

6

12

TBD

-

0.8

-

-

-

-

-

TBD

-

TBD

-

45

-

350

-

-

-

-

-

-

300

TBD

-

TBD

-

45

-

350

-

2

-

-

-

3

MSK 4322

Min. Typ. Max.

-

-

-

-

-

-

-

-

-

-

-

-

-

2.2

-

-

-

-

-

-

-

-

-

-

300

2

UNITS

2.0

-

-

-

2.0

-

-

-

600

-

750

-

-

-

-

-

-

-

0.8

-

TBD

-

TBD

-

45

-

350

-

TBD

-

TBD

-

45

-

350

-

2

-

V

-

V

-

V

V

-

V

-

V

nS

µA

-

mA

-

µA

6

mA

-

mA

-

mA

-

V

V

nS

nS

nS

nS

nS

nS

nS

nS

-

µS

-

nS

NOTES:

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

2 Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise specified.

3 Military grade devices ("H" suffix) shall be 100% tested to subgroups 1, 2, 3 and 4.

4 Subgroups 5 and 6 testing available upon request.

5 Subgroup 1, 4 TA =TC = +25°C

2, 5 TA = TC =+125°C

3, 6 TA = TC =-55°C

2

PRELIMINARY Rev. A 6/00

TYPICAL PERFORMANCE CURVES

3

PRELIMINARY Rev. A 6/00

APPLICATION NOTES

MSK 4322 PIN DESCRIPTION

VCC - Is the low voltage supply for all the internal logic

and drivers. A 0.1 µF ceramic capacitor in parallel with

a 10µF tantalum capacitor is recommended bypassing

for the VCC-VSS pins.

VSS - Is the low voltage supply return pin and the input

logic return reference. All logic input and logic output

is referenced to this pin. This pin can vary ±5V from

the COM power return pin without affecting any of the

logic functions.

AØHIN, BØHIN, CØHIN - Are low active logic inputs for

signalling the corresponding phase high-side switch to

turn on. The input levels are 5V CMOS or TTL compat-

ible. Typical propagation delays are around 600nS.

AØLIN, BØLIN, CØLIN - Are low active inputs for sig-

nalling the corresponding phase low-side switch to turn

on. The input levels are 5V CMOS or TTL compatible.

Typical propagation delays are around 600nS.

FAULT - Is an open drain logic output pin that gets

enabled any time the VCC level goes below the cutoff

point, or an overcurrent condition occurs. Bringing VCC

back to normal levels will reset FAULT. Removing the

overcurrent condition and allowing the low-side logic

inputs to remain high(off) for 10µS will restore opera-

tion.

PROTECTION

- All logic inputs use a 300nS filter. A pulse width

below this will get ignored.

- VCC voltage below the cutoff level of 8.65 volts

will reset all switch outputs off and ignore subse-

quent logic inputs until VCC is restored.

- Undervoltage lockout of the internal drivers for the

high-side switches also occurs at 8.65 volts, but will

not flag with the FAULT output. This may occur if

the high-side output gets switched without switch

ing the low-side. The internal boot strap power

supply for the high-side switch will sag too low for

adequate switching. The boot strap supply depends

on PWMing of the low-side switches for proper

operation.

- Switching a low-side logic input while the corre-

sponding phase high-side logic input is activated

will turn off both switches. The opposite condition

is also true. This is cross-conduction lockout and

will occur any time low and high-side inputs for a

phase are activated at the same time.

- A 2µS deadtime is automatically inserted between

high and low-side output switching to allow com-

plete turn-off of each switch so no overlap will

occur.

ITRIP - Is an analog input pin for sensing current flow-

ing from the COM pin through a sense resistor to the

high power ground. A 0.485 volt level at this pin with

respect to VSS will signal an overcurrent condition,

enable the FAULT pin and shut down all output switch-

ing. Bringing the voltage below this point (100 mV

hysteresis) will remove the FAULT output and leaving

the low-side logic inputs simultaneously high (de-acti-

vated) for 10µS will restore normal operation.

V+ - Is the high voltage positive rail for the bridge.

Proper bypassing to VSS with sufficient capacitance to

suppress any voltage transients and to ensure remov-

ing any drooping during switching, should be done as

close to the pins on the hybrid as possible.

COM - Is the return side of the bridge. A sense resistor

can be connected between this point and VSS, which

is the high voltage negative rail. COM can float above

and below the VSS pin up to 5 volts and proper opera-

tion will be maintained. Precautions should be taken

so as to not allow this voltage to get over ±5 volts

under any conditions.

AØ, BØ, CØ - Are the pins connecting the 3 phase

bridge switch outputs.

- An overcurrent condition detected by the ITRIP

pin will shut down all output switches until the

overcurrent condition is removed and all three

low-side logic inputs are held high for 10µS,

then normal operation will resume.

- ITRIP has a 100nS leading edge blanking time

after switching to ignore any switching current

transients.

TYPICAL OPERATION

4

PRELIMINARY Rev. A 6/00

TYPICAL SYSTEM OPERATION

The MSK 4322 is designed to be used with a +100 volt high voltage bus, +15 volt low power bus and +5 volt

logic signals. Proper derating should be applied when designing the MSK 4322 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 low power circuitry and high power circuitry should be kept separate. The connection

between the bottom of the current sense resistor, VSS pin and the high power ground are connected at this point.

This is a critical path and high currents should not be flowing between the current sense and VSS. Inductance in

this path should be kept to a minimum. An RC filter (shown in 2 places) will filter out the current spikes and keep

the detected noise for those circuits down to a minimum.

In the system shown, two types of current limit are implemented. The first limit is a PWM pulse by pulse limit

controlled by the motor controller. A second absolute maximum limit is set up for the MSK 4322 which will

completely shut off the bridge in the event that current limit is exceeded.

When controlling the motor speed by the PWM method, it is required that the low side switches be PWM pulsed

due to the charge pump power supplies used to power the high side switch drives. The higher the PWM speed the

higher the current load on the drive supply. PWM of the low side will prevent sagging of the high side supplies.

The logic signals coming from the typical motor controller IC are set up for driving N channel low side and P

channel high side switches directly and are usually 15 volt levels. Provision should be made for getting 5 volt logic

signals to the MSK 4322 of the correct assertion levels. Typically, the low side signals out of the controller are

high active and the high side are low active. Inverters are shown in the system schematic for the low side control-

ler output.

5

PRELIMINARY Rev. A 6/00

MECHANICAL SPECIFICATIONS

ESD Triangle Indicates Pin 1

All dimensions are ±0.01 inches unless otherwise specified.

MSK4322 H U

4707 Dey Road, Liverpool, New York 13088

ORDERING INFORMATION

LEAD CONFIGURATIONS

S = STRAIGHT; U = BENT UP; D = BENT DOWN

SCREENING

BLANK = INDUSTRIAL; H = MIL-PRF-38534

GENERAL PART NUMBER

M.S. Kennedy Corp.

Phone [phone]

FAX [phone]

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.

6

PRELIMINARY Rev. A 6/00