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Power Pems MSK 42250 pages
MIL-PRF-38534 CERTIFIED
M.S.KENNEDY CORP.
75 VOLT 20 AMP MOSFET
H-BRIDGE PWM MOTOR
DRIVER/AMPLIFIER
4225
(315)701-6751
4707 Dey Road Liverpool, N.Y. 13088
FEATURES:
• Low RDS(ON) 0.013Q Typical
• Low Cost, Non-Hermetic, Complete H-Bridge
•20 Amp Capability, 75 Volt Maximum Rating
• Self-contained Smart Lowside/Highside Drive Circuitry
• Internal 45KHz PWM Generation, Shoot-through Protection
• Isolated Case Allows Direct Heatsinking
• Logic Level Disable Input
• Logic Level High Side Enable Input for Special Modulation or Function
DESCRIPTION:
The MSK 4225 is a complete H-Bridge circuit to be used for DC brushed motor control or Class D switchmode amplifi-
cation. All of the drive/control circuitry for the lowside and highside switches are internal to the circuit. The 45KHz PWM
circuitry is internal as well, leaving the user to only provide an analog signal for the motor speed/direction, or audio signal for
switchmode audio amplification. The MSK 4225 is constructed in a space efficient plastic power package that can be
directly bolted to a heatsink.
EQUIVALENT SCHEMATIC
O-
Q-
0—
Q-
©-
CD-
CD—
©-
CD-
CD-
i—*»
45KHz
PWM
GENERATOR
H-BRIDGE
DRIVE
CIRCUITRY
V"—I
<5
-©
<5
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
MSK 4225
SPEAKER
NC
VCC
HEN
DIS
NC
INPUT
NC
8 GND
9 GND
10 NC
1
2
3
4
5
6
7
20
19
18
17
16
15
14
13
12
11
RSENSEA
RSENSEA
OUTPUT A
OUTPUT A
V +
V +
OUTPUT B
OUTPUT B
RSENSE B
RSENSE B
1
Rev. F 1/11
"
