On-period setting circuit, power control IC, and switching power supply device

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United States of America Patent

PATENT NO 9876426
SERIAL NO

15086215

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Abstract

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An ON-period setting circuit is provided in a fixed-ON-period switching power supply device that produces a desired output voltage from an input voltage by driving a coil by turning ON and OFF an output transistor and a synchronous rectification transistor. The ON-period setting circuit shortens the ON period the more the lighter the load is in a discontinuous-current mode. Or, the ON-period setting circuit transiently shortens the ON period on completion of a transition from a discontinuous-current mode to a continuous-current mode.

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Patent Owner(s)

Patent OwnerAddress
ROHM CO LTDJAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tateishi, Tetsuo Kyoto, JP 61 1034
Tsuruyama, Genki Kyoto, JP 14 30

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