A low-power write driver for hard disk drives

Author

Kawashimo, Tatsuya ; Yamashita, Hiroki ; Yagyu, Masayoshi ; Yuki, Fumio

Author_Institution

Hitachi Ltd., Tokyo, Japan

fYear

2005

fDate

16-18 June 2005

Firstpage

226

Lastpage

229

Abstract

This paper describes a new low-power write driver circuit for mobile hard disk drive preamplifiers. To achieve low power consumption, we developed a write driver circuit with a single-stage MOS transistor as the current driver, which both switches and controls the write current. We also developed a reflection cancellation method to suppress the distortion of the write current waveform during write transition. Fabricated by 0.35-μm SOI-BiCMOS technology, this write driver circuit dissipates low power, 380 mW (at 100 MHz).

Keywords

BiCMOS integrated circuits; MOSFET; disc drives; driver circuits; hard discs; integrated circuit design; low-power electronics; preamplifiers; 0.35 micron; 100 MHz; 380 mW; SOI-BiCMOS technology; current driver; distortion suppression; low-power write driver; mobile hard disk drive preamplifiers; power consumption; reflection cancellation; single-stage MOS transistor; write current waveform; write driver circuit; write transition; Driver circuits; Energy consumption; Hard disks; MOSFETs; Magnetic heads; Preamplifiers; Reflection; Switches; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI Circuits, 2005. Digest of Technical Papers. 2005 Symposium on

Print_ISBN

4-900784-01-X

Type

conf

DOI

10.1109/VLSIC.2005.1469372

Filename

1469372