Patent ID: 11881857
Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method for monitoring thermal conditions in a power switching system:
receiving at a sense pin of a gate driver a transistor temperature of a power transistor;
comparing the transistor temperature to a fault threshold to generate an external fault signal based on the comparison;
measuring, by a gate-driver sensor of the gate driver, a gate-driver temperature;
comparing the gate-driver temperature to a thermal-shutdown threshold to generate an internal fault signal based on the comparison;
generating a first pulse train signal based on the internal fault signal;
generating a second pulse train signal based on the external fault signal;
combining the first pulse train signal and the second pulse train signal to generate a combined signal; and
communicating the combined signal over a shared communication channel across an isolation barrier of the gate driver.