Push-and-pull driver circuit for driving an H-bridge coupled to

Details Push-and-pull driver circuit for driving an H-bridge coupled to Push-and-pull driver circuit for driving an H-bridge coupled to

1995-03-22

1998-07-14

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327487, 327489, 327588, 360 46, 360 68, H03K 300

Patent

active

057810460

ABSTRACT:
A write driver for a two-terminal inductive load comprises an H-bridge switching circuit and a push-pull driver circuit. The H-bridge switching circuit responds to a first mode to conduct a current in a first direction through the inductive load and responds to a second mode to conduct the current in a second direction through the inductive load. The push-pull driver circuit responds to the first mode to push a charge current into a first control node of the H-bridge and responds to the second mode to pull a discharge current from the first control node. In one form, the write driver includes a second push-pull driver circuit responsive to the first mode to pull a discharge current from a second control node and to the second mode to push a charge current into the second control node.

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