Multiport USB power adaptor and control methodology

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11740672
APP PUB NO 20220350388A1
SERIAL NO

17387833

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Abstract

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A multiport USB-PD adaptor including a flyback-converter, a USB controller including a USB-PD subsystem and buck-controller, and multiple buck and bypass-circuits, and methods for operating the same are provided. Generally, the adaptor is operated in a buck-bypass-mode, in which at least one buck-circuit is bypassed and the flyback-converter is operated to generate an input voltage (VIN) to the buck-circuits equal to a requested output voltage (VOUT_C), which is then coupled directly to the associated port. Buck-circuits coupled to other active ports can also be bypassed if the requested VOUT_Cs are the same, or the buck-circuits operated to provide another VOUT_C. If a bypass-circuit unavailable, the adaptor is operated in a variable-buck-input-mode by determining a highest VOUT_C requested on any port and setting VIN to a sum of the highest VOUT_C and an offset voltage. Buck-circuits coupled to active ports are then operated to provide the requested output voltages.

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Patent Owner(s)

  • CYPRESS SEMICONDUCTOR CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Hua-ping Shenzhen, CN 1 1
Cheng, Jen-Hui Taipei, TW 1 1
Kuo, Hsiang-Nien Taipei, TW 1 1
Lin, Chuan-yu Taipei, TW 1 1
Zhu, Yong-shuang Shenzhen, CN 1 1

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