US 11,862,959 B2
Short circuit recovery in universal serial bus Type-C power delivery (USB-C/PD) systems based on resistors
Arun Khamesra, Bangalore (IN); Hariom Rai, Bangalore (IN); and Pulkit Shah, Bangalore (IN)
Assigned to Cypress Semiconductor Corporation, San Jose, CA (US)
Filed by Cypress Semiconductor Corporation, San Jose, CA (US)
Filed on Apr. 26, 2022, as Appl. No. 17/730,028.
Prior Publication US 2023/0344213 A1, Oct. 26, 2023
Int. Cl. H02H 3/08 (2006.01); H02H 9/02 (2006.01); H02H 3/06 (2006.01)
CPC H02H 3/06 (2013.01) [H02H 3/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a Universal Serial Bus Type-C Power Delivery (USB-C/PD) system, the method comprising:
determining whether a short circuit condition has occurred based on a first threshold voltage;
in response to determining that the short circuit condition has occurred, turning off a ground isolation switch;
determining whether a voltage on a ground line is less than a second threshold voltage based on an output of a comparison circuit, wherein a second resistor is coupled to a gate node of the ground isolation switch via a first switch to allow a current to flow through the second resistor, and wherein the gate node is coupled to an input of the comparison circuit; and
in response to determining that the voltage on the ground line is less than the second threshold voltage, turning on the ground isolation switch.