Patent ID: 11946979
Assignee: DIALOG SEMICONDUCTOR INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A method of short or soft-short circuit condition detection, comprising:
detecting that a load device has disconnected from a data interface cable coupling the load device to a switching power converter;
responsive to a detection of the load device disconnecting from the data interface cable, entering a standby mode of operation for the switching power converter in which the switching power converter cycles a primary-side power switch to maintain an output voltage for the data interface cable;
ceasing the cycling of the primary-side power switch transistor for a set period of time while determining whether the output voltage has dropped below a droop threshold rate during the set period of time; and
detecting a presence of a soft-short circuit in the data interface cable responsive to the output voltage dropping below the droop threshold rate during the set period of time while the primary-side power switch transistor has ceased cycling.