Patent ID: 11876366
Assignee: STMICROELECTRONICS (ALPS) SAS
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of protecting an electronic circuit against an overvoltage, the electronic circuit comprising a plurality of first switches, each first switch configured to couple a respective first node of the electronic circuit to a first input/output terminal of the electronic circuit, a plurality of second switches, each second switch configured to couple the respective first node to a second node of application of a fixed voltage potential, a high-pass filter having an input coupled to the first input/output terminal and an output coupled to a respective control terminal of each second switch, and a second input/output terminal coupled to the input of the high-pass filter, and coupled to the second node by a circuit of protection against electrostatic discharges, the method comprising:
receiving the overvoltage by the high-pass filter;
setting, by the high-pass filter, each second switch to an on-state based on the receiving the overvoltage; and
providing a Zener diode function by the circuit of protection against electrostatic discharges.