Patent ID: 6879455

Claim:
A write driver circuit having a differential signal input, comprising: a write head; an H-switch having a first and second transistor with a first node defined therebetween, and a third and fourth transistor with a second node defined therebetween, wherein said first and second nodes are adapted to drive the write head; a first boosting transistor set coupled to said differential signal input adapted to pull said first node low and said second node high; a second boosting transistor set coupled to said differential signal input adapted to pull said first node high and said second node low; and a pre-driver including a fifth transistor coupled between said differential signal input and said H-switch first transistor, and a sixth transistor coupled between said differential signal input and said H-switch third transistor, wherein said fifth and sixth transistors transient currents during switching, wherein said transient currents drive said first and second boosting transistor set.