Method and apparatus for predriving a driver circuit for a relat

Details Method and apparatus for predriving a driver circuit for a relat Method and apparatus for predriving a driver circuit for a relat

1996-08-30

1998-07-14

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327170, 327380, 327437, 326 87, H03K 300

Patent

active

057810451

ABSTRACT:
A predriver circuit for current switching, di/dt, noise control for high current load devices is disclosed. Parallel weak pull up and pull down circuit paths are combined with strong pull up and pull down circuit paths, respectively, to provide control over the rate of change of current through the load during predetermined turn-on and turn-off time periods. Predriver control for both NMOS driver, current sink NMOS, and PMOS driver, current source PMOS, are demonstrated. The predriver circuit provides control of the rate of current switching through the load without excessive delay in fully turning on or off the load device.

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