Variable slew rate pulse width modulation system

Details Variable slew rate pulse width modulation system Variable slew rate pulse width modulation system

1997-05-30

2000-07-04

Salata, Jonathan

Electricity: motive power systems

Induction motor systems

Primary circuit control

318439, H02P 528

Patent

active

060843780

ABSTRACT:
A method and a circuit for controlling a slew rate of a coil in a voice coil motor in a disk drive system. A slew rate control signal is generated by a microprocessor or by an analog circuit in response to one or more operating parameters of the disk drive system. A driver circuit selectively couples the coil between a voltage source and a ground in response to a driver signal, and controls the slew rate of the coil in response to the slew rate control signal.

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