Patent ID: 11863186
Assignee: INFINEON TECHNOLOGIES AG
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method of controlling a power switch, the method comprising:
receiving pulse modulation (PM) control signals from a processor via an input pin of a driver circuit;
delivering PM drive signals from an output pin of the driver circuit to the power switch to control ON/OFF switching of the power switch;
storing counts of the PM drive signals in a first register associated with the driver circuit, wherein the counts associated with the PM drive signals comprise a number of rising and/or falling edges of the PM drive signals; and
storing counts of the PM control signals in a second register, wherein the counts of the PM control signals count a number of rising and/or falling edges of the PM control signals,
wherein PM signaling in the driver circuit is OK when there is no mismatch between the stored counts in the first register relative to the stored counts in second register, and
wherein a PM signaling problem exists in the driver circuit when there is mismatch between the stored counts in the first register relative to the stored counts in second register.