Control circuit having power saving mode for use in power supply circuit

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United States of America Patent

PATENT NO 11843321
SERIAL NO

17534538

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Abstract

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A control circuit for controlling a power supply circuit to provide power to a system device which includes a communication circuit includes: a pulse width modulation (PWM) controller configured to switch a transformer of the power supply circuit to generate a first output voltage; and a switched capacitor converter configured to generate a second output voltage according to the first output voltage. The second output voltage provides power to the communication circuit, wherein the communication circuit generates a power saving signal to control the PWM controller and the switched capacitor converter. When the power saving signal is enabled, the first output voltage is decreased and a duty ratio of the switched capacitor converter is increased.

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Patent Owner(s)

Patent OwnerAddress
RICHTEK TECHNOLOGY CORPORATION14F NO 8 TAIYUAN 1ST ST ZHUBEI CITY HSINCHU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Wei-Hsu Hsinchu, TW 57 211
Chen, Yu-Chang Nantou, TW 70 218
Huang, Tsung-Wei Taipei, TW 78 567
Lin, Shui-Mu Taichung, TW 57 820
Yang, Ta-Yung Taoyuan, TW 388 5804

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