公开(公告)号：US11740672B2

公开(公告)日：2023-08-29

申请号：US17387833

申请日：2021-07-28

Applicant: Cypress Semiconductor Corporation

Inventor： Chuan-yu Lin ,  Jen-Hui Cheng ,  Hua-ping Cao ,  Yong-shuang Zhu ,  Hsiang-Nien Kuo

IPC: G06F1/26 ,  G06F13/42

CPC classification number: G06F1/266 ,  G06F13/4282 ,  G06F2213/0042

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.

公开(公告)号：US20220350388A1

公开(公告)日：2022-11-03

申请号：US17387833

申请日：2021-07-28

Applicant: Cypress Semiconductor Corporation

Inventor： Chuan-yu Lin ,  Jen-Hui Cheng ,  Hua-ping Cao ,  Yong-shuang Zhu ,  Hsiang-Nien Kuo

IPC: G06F1/26 ,  G06F13/42

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.