Multiport USB power adaptor and control methodology
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United States of America Patent
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Aug 29, 2023
Grant Date -
Nov 3, 2022
app pub date -
Jul 28, 2021
filing date -
Apr 30, 2021
priority date (Note) -
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Abstract
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.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- CYPRESS SEMICONDUCTOR CORPORATION
International Classification(s)
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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