High speed write driver for magnetic inductive write head using a half-switched H-driver

摘要

A write driver in an H configuration for magnetic inductive write heads characterized by having both arms in the bottom half of the driver conduct current all the time, with only the top devices being switched. In this configuration there is no need to synchronize the switching of the top and bottom halves of the H-driver. Furthermore, the device half being switched can be optimized for speed independent of the properties of the other H-driver half.