Motor with input-controlled high side driver

Details Motor with input-controlled high side driver Motor with input-controlled high side driver

1994-10-27

1997-09-16

Masih, Karen

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, 326 27, 326 23, H02P 118

Patent

active

056684495

ABSTRACT:
A circuit for operating a polyphase DC motor, such as the type having a plurality of "Y" connected stator coils, has circuitry for charging the coils at a rate which will reduce EMI and other noise, while maintaining an acceptable charge rate. The gate of a selected high side driving transistor is charged at a relatively high rate during a ramping phase. During the ramping phase, the gates of the selected transistor is charged to a voltage near the voltage needed to form a channel in the transistor for conduction. After the ramping phase, the gates are charged at a lesser rate in order to control the rate of charging of the stator coils to prevent noise.

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L68238S Data Sheet from SGS-Thomson Microelectronics.

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