4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

4358

FEATURES:

500V, 25 Amp Capability at 110°C
Fully Isolated Bridge
Ultra Low Thermal Resistance
Integral Free Wheeling Fast Recovery Epitaxial Diode (FRED)
Self-Contained, Smart Lowside/Highside Drive Circuitry and Isolated Supply
Adjustable Deadtime
Capable of Switching Frequencies to 20KHz
Isolated Case Allows Direct Heat Sinking
Bolt-down Design Allows Superior Heat Dissipation

MIL-PRF-38534 CERTIFIED

25 AMP, 500 VOLT IGBT PLUS DIODE

FULLY ISOLATED

SMART POWER 3-PHASE MOTOR

DRIVE POWER HYBRID

EQUIVALENT SCHEMATIC

DESCRIPTION:

The MSK 4358 is a 25 Amp, 3 Phase Isolated Bridge Smart Power Motor Drive Hybrid with a 500 volt rating. The
output switches are Insulated Gate Bipolar Transistors (IGBT's) tailored for high switching speeds. The free-wheeling
diodes are Fast Recovery Epitaxial Diodes (FRED's) to provide matched current capabilities with the IGBT's and are
specified with excellent reverse recovery times at high current ratings. The bridge is optically isolated from the control
circuitry. This new smart power motor drive hybrid is compatible with 5v CMOS logic levels. The internal circuitry
prevents simultaneous turn-on of the in-line half bridge transistors with adjustable 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 isolated internal high-side power supply derived from the +15 volt supply completely eliminates the need for
3 floating independent power supplies for the high-side drive.

1
2
3
4
5
6
7
8
9

10
11

+15V
GND
AHI
ALO
BHI
BLO
+15V
GND
CHI
CLO
+15V

TYPICAL APPLICATIONS

ISO-9001 CERTIFIED BY DSCC

3 PHASE SIX STEP DC BRUSHLESS MOTOR DRIVE
OR 3 PHASE SINUSOIDAL INDUCTION MOTOR DRIVE

PIN-OUT INFORMATION

PRELIMINARY Rev. E 5/03

12
13
14
15
16
17
18
19
20
21
22

GND
RESET
R/C
+15V
GND
OSCOUT
N/C
N/C
N/C
N/C
N/C

23
24
25
26
27
28
29
30
31
32
33

N/C
N/C
RKELVIN+
RKELVIN-
RSENSE-
RSENSE+
CV-
N/C
CØ
CV+
N/C

34
35
36
37
38
39
40
41
42
43

N/C
BV-
N/C
BØ
BV+
N/C
AV-
N/C
AØ
AV+

Typ.

230

15.00

Typ.

230

170

230

15.00

TBD

PRELIMINARY Rev. E 5/03

Max.

2.2

1.7

TBD

180

150

330

15.25

0.8

TBD

Min.

14.75

3.65

TBD

Min.

14.75

3.65

TBD

=25A

Vt=270V, 25Amps @125°C

L=100µH, R=0.2

=25A,

di/dt

=400A/uS, Vr=350V

V+=500V

V+=400V

V+=500V

=15V

V+=270V, I

=25A

V+=270V, I

=25A

@2 Amps

OUTPUT CHARACTERISTICS

VC-E On Voltage (Each IGBT)

Instantaneous Forward Voltage

(FRED Flyback Diode)

Turn On Switching Energy

Turn Off Switching Energy

Reverse Recovery Time

Leakage Current (Each IGBT/Diode)

BIAS SUPPLY CHARACTERISTICS

Quiescent Bias Current

Supply Voltage

INPUT SIGNALS CHARACTERISTICS

Positive Trigger Threshold Voltage

Negative Trigger Threshold Voltage

SWITCHING CHARACTERISTICS

Upper Drive: Deadtime R/C=10K/47pF

Turn-On Propagation Delay

Turn-Off Propagation Delay

Turn-On

Turn-Off

Lower Drive: Deadtime R/C=10K/47pF

Turn-On Propagation Delay

Turn-Off Propagation Delay

Turn-On

Turn-Off

SENSE RESISTOR

Resistance

Storage Temperature Range
Lead Temperature Range

(10 Seconds)

Case Operating Temperature

MSK4358

MSK4358H/E

Junction Temperature

-65°C to +150°C

300°C

-40°C to +85°C

-55°C to +125°C

+150°C

All Ratings: Tc = +25°C Unless Otherwise Specified

High Voltage Supply
Logic Supply
Continuous Output Current
Peak Output Current

(1 pulse, 10µSec)

Thermal Resistance

(IGBT - Junction to Case)

Thermal Resistance

(Diode - Junction to Case)

Parameters

MSK 4358 2

ELECTRICAL SPECIFICATIONS

ABSOLUTE MAXIMUM RATING

Group A

Subgroup

1,2,3

500V

18V

25A
60A

0.66°C/W

MSK 4358H/E

Test Conditions

NOTES:

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

OUT

UNITS

µS

2 Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified.
3 Mil itary grade devices ("H" suffix) shall be 100% tested to subgroups 1,2,3 and 4.

5 Subgroup 1,4 T

=+25°C

4 Subgroups 5 and 6 testing available upon request.

+15V

2,5 T

=+125°C

3,6 T

=-55°C

0.89°C/W

Max.

2.0

1.7

TBD

1.7

1.3

TBD

180

150

2.5

150

300

250

300

15.25

0.8

TBD

+15V - is the low voltage supply for all the internal logic and
isolated supplies which provide power to the gate drivers. A
0.1µF ceramic capacitor in parallel with a 22µF tantalum capaci-
tor is recommended for bypassing the low voltage supply to
GND.

GND - is the low voltage supply return for the +15V. All
bypassing of the +15V should return here. Since the output
section of the hybrid is completely isolated, there are no restric-
tions for potential differences between this GND and any hi-
voltage returns, up to 500V.

AHI,BHI,CHI - are the logic inputs for controlling the switching
of the corresponding hi-side bridge outputs. A logic high will
turn on the corresponding hi-side output. The input levels are
5V CMOS compatible. If one of these inputs are active at the
same time as the corresponding low-side bridge outputs, neither
output will be allowed to turn on until one of the inputs is
switched low. There will be a deadtime inserted before the
corresponding bridge output is switched in all cases. This pre-
vents simultaneous conduction of the output, shorting high
voltage supply and destroying the bridge.

ALO,BLO,CLO - are the logic inputs for controlling the switching
of the corresponding low-side bridge outputs. A logic high will
turn on the corresponding low-side output. The input levels are
5V CMOS compatible. If one of these inputs are active at the
same time as the corresponding hi-side bridge outputs, neither
output will be allowed to turn on until one of the inputs is
switched low. There will be a deadtime inserted before the
corresponding bridge output is switched in all cases. This pre-
vents simultaneous conduction of the output, shorting the high
voltage supply and destroying the bridge.

RESET - is an active low logic input for causing all switching to
cease. The input level is 5V CMOS compatible. Upon releasing
RESET, the outputs will resume after the dead time.

R/C - is the input pin for setting the deadtime of the bridge.
Connecting a resistor between this input and OSC OUT, and a
capacitor to ground will create the time for an internal oscillator.

OSC OUT - is a pin that brings the deadtime oscillator out to be
connected through the timing resistor to R/C. This is not an
output to be used externally, but just for the timing circuit.

AV+,BV+,CV+ - are pins for connecting the tops of each half
bridge to the high voltage supply. Each pin must be connected
individually, as there is no internal connection across the three
half bridges. Proper power supply bypassing must be connected
to these pins and the V- pins as close to the hybrid as possible
for proper filtering.

AV-,BV-,CV- - are pins for connecting the bottoms of each half
bridge to the high voltage supply return. Each pin must be
connected individually, as there is no internal connection across
the three half bridges. Proper power supply bypassing must be
connected to these pins and the V+ pins as close to the hybrid
as possible for proper filtering.

AØ, BØ, CØ - are the pins connecting the 3 phase bridge switch
outputs.

APPLICATION NOTES

DEADTIME SELECTION

MSK4358 PIN DESCRIPTION

The amount of deadtime required is based on the propagation
delay of the input to actual completion of switching of the
output transistors. Not taking all this into account can possi-
bly allow the opposite transistor in a half bridge to turn on
before the active transistor can turn off. Excessive current will
flow through the half bridge because this creates a momentary
short across the power supply.

Once all these factors are taken into account, the deadtime can
be determined. Allow sufficient safety facor for changes in
components over temperature, and variations from system to
system in production.

Deadtime is exactly 8 R/C clock periods. Use the formula:

Max. Clock = 8/Min. Deadtime

For clock operation below 1MHz:

Clock Frequency =

For clock operation above 1MHz:

Clock Frequency =

As an alternative, the R/C pin can be driven directly with an
HCMOS compatible clock up to 24MHz.

PRELIMINARY Rev. E 5/03

0.95

OSC

x R

OSC

0.95

OSC

+ 30) + 3x 10

RSENSE+ - is the pin for connecting to the internal sense resistor.
It has a value of 0.010 ohms, 20 watts. AV-,BV- and CV- should
connect to this point for sensing the current at the bottom of the
bridge.

RSENSE- - is the pin for connecting the internal sense resistor to
the high voltage return.

RKELVIN+ - is the pin for connecting to the sense resistor +KELVIN
connection. This is on the same side of the resistor as RSENSE+.

RKELVIN- - is the pin for connecting to the sense resistor -KELVIN
connection. This is on the same side of the resistor as RSENSE-.

TYPICAL SYSTEM OPERATION

The MSK4358 is designed to be used with a +270 volt high voltage bus, +15 volt low power bus, and +5 volt logic signals.
Proper derating should be applied when designing the MSK4358 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 two sections of the hybrid are
completely isolated, and can float relative to each other without referencing one to the other. An RC filter will filter out the current
spikes and keep the detected noise for that circuit down to a minimum.

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 MSK4358 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 high side controller output.

PRELIMINARY Rev. E 5/03

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