Write driver with improved boosting circuit and interconnect...

Details Write driver with improved boosting circuit and interconnect... Write driver with improved boosting circuit and interconnect...

2008-04-29

2008-04-29

Nguyen, Hoa T. (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

C360S046000, C360S067000

Reexamination Certificate

active

07365928

ABSTRACT:
A write driver driving a write current through a head connected to the write head by an interconnect. The write driver includes a circuit matching output resistance to the odd characteristic impedance of the interconnect and a voltage boosting circuit. The voltage boosting circuit in connected between a high voltage reference or supply voltage and a low voltage reference, and includes a pair of current sources, such as MOS transistors, connected to the input node of a single capacitor. During the overshoot duration, the current sources selectively operate at saturation to generate a pulsed current with an amplitude of half the load current. The recharge of the capacitor is done with the load current.

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