Browse Prior Art Database

Disk Storage Device with a Direct Power Output Motor Controller

IP.com Disclosure Number: IPCOM000014872D
Original Publication Date: 2001-Mar-01
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

Disclosed is a disk storage device, such as a hard disk drive (HDD) or CD-ROM, incorporating an application specific integrated circuit (ASIC) which drives the motors (disk spindle motor or actuator voice coil motor) without additional analog amplification. On current HDDs, the motor controller ASIC output must be amplified to drive the voice coil motor (VCM) and/or spindle motor. Typically a MOSFET circuit, external to the ASIC, is used for amplification, as shown in Fig. 1. V Motor Driver ASIC