US 11,907,034 B2
Method of power management for a hub with a plurality of USB-C ports
Karthik Sivaramakrishnan, Bangalore (IN); Simon Abraham, Bangalore (IN); and Manaskant Dipakkumar Desai, Bangalore (IN)
Assigned to CYPRESS SEMICONDUCTOR CORPORATION, San Jose, CA (US)
Filed by Cypress Semiconductor Corporation, San Jose, CA (US)
Filed on Jun. 15, 2022, as Appl. No. 17/841,256.
Prior Publication US 2023/0409098 A1, Dec. 21, 2023
Int. Cl. G06F 1/26 (2006.01); G06F 1/329 (2019.01); G06F 1/3234 (2019.01)
CPC G06F 1/266 (2013.01) [G06F 1/329 (2013.01); G06F 1/3253 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method of power management for a hub having a plurality of USB-C ports, the method comprising:
allocating a guaranteed power budget to each USB-C port of the hub, wherein one of the USB-C ports has a higher power priority and the other USB-C ports have a lower power priority;
reducing the guaranteed power budget allocated to a USB-C port with the lower power priority in response to measured power for that USB-C port being below its currently guaranteed power budget by a predetermined amount; and
offering additional power budget to the USB-C port with the higher power priority in response to the guaranteed power budget allocated to a USB-C port with the lower power priority having been previously reduced.