The MSK 4422 is a 200 V, 20 A MOSFET smart, power three-phase motor drive hybrid. The device's output switches are power MOSFETs with intrinsic fast-recovery diodes for the freewheeling 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 supplies for the high-side drive. Current sense circuitry is provided to sense current from an external resistor to shut down the bridge for overcurrent.
Features
- 200V, 20 Amp Capability
- Self-Contained, Smart Lowside/Highside Drive Circuitry
- Under-Voltage Lockout, Internal 2μS Deadtime
- Capable of Switching Frequencies to 25KHz
- Non-Hermetic Isolated Case Allows Direct Heat Sinking
- Case Bolt-down Design Allows Superior Heat Dissipation
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