Efficient energy recovery in disk drive during power loss

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United States of America Patent

PATENT NO 9780700
SERIAL NO

14039724

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Abstract

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A back electromotive force of a rotating motor is converted into a voltage for a load by driving, in accordance with a duty cycle, at least one switching circuit that couples the back electromotive force to a load through a rectifying circuit. An error signal is generated that is a difference between the load voltage and a reference voltage. The duty cycle is controlled as a function of the error signal to cause the load voltage to approach the reference voltage.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Elliott, Mark Lowell Eden Prairie, US 2 6
Lieu, Binh Kim Minneapolis, US 4 45
Sosseh, Raye A Minneapolis, US 13 128

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