Motor drive device

Details Motor drive device Motor drive device

1997-05-30

1998-10-20

Ro, Bentsu

Electricity: motive power systems

Limitation of motor load, current, torque or force

318558, 361777, 428901, H05K 118, H02P 729

Patent

active

058251464

ABSTRACT:
A motor drive device including a substrate, a control unit packaged over the substrate for generating a pulse width modulation signal; insulation means packaged over the substrate, a gate drive circuit packaged over the substrate and connected through the insulation means with the control unit for generating a transistor drive signal in response to the pulse width modulation signal coming from the control unit, and an inverter including a plurality of transistors for generating a phase current by turning ON/OFF the transistors in response to the transistor drive signal coming from the gate driver circuit. A wiring pattern and a substrate ground are formed at the side of the substrate closer to the control unit. Only the wiring pattern is formed at the side of the substrate closer to the gate drive circuit.

REFERENCES:
patent: 5023684 (1991-06-01), Tsunoda
patent: 5194933 (1993-03-01), Miyagi

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