Invention Grant
- Patent Title: Adaptive synchronous rectification of brushless DC motor back-EMF
- Patent Title (中): 无刷直流电机自适应同步整流反电动势
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Application No.: US12395434Application Date: 2009-02-27
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Publication No.: US08143829B2Publication Date: 2012-03-27
- Inventor: Pauy-Guan Tan
- Applicant: Pauy-Guan Tan
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte. Ltd.
- Current Assignee: STMicroelectronics Asia Pacific Pte. Ltd.
- Current Assignee Address: SG Singapore
- Agency: Graybeal Jackson LLP
- Priority: SG200801720-4 20080228
- Main IPC: H02P1/04
- IPC: H02P1/04
Abstract:
An embodiment of a disk drive power system is described. The system is operable such that during power interruption, the system taps electric power by rectifying the back-EMF generated across each winding of a DC motor and supplying power to a voice-coil motor to park a read/write head safely away from an associated magnetic disk surface.
Public/Granted literature
- US20100002331A1 ADAPTIVE SYNCHRONOUS RECTIFICATION OF BRUSHLESS DC MOTOR BACK-EMF Public/Granted day:2010-01-07
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