Patent ID: 11929609
Assignee: RENESAS DESIGN TECHNOLOGY INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method of protecting against a surge, the method comprising
receiving an input voltage at an input port;
providing an energy release cell having a first terminal coupled to the input port, a second terminal coupled to ground, and a control terminal coupled to the input port via a first switch device and to the ground via a second switch device;
wherein the first switch device comprises a first switch coupled to a second switch, the first switch and the second switch having a common source node, and a common gate node, and wherein body diodes of the first switch and the second switch are connected back to back;
upon occurrence of a positive voltage surge, closing the first switch device to enable a current to flow from the input port to ground through the enemy release cell; and
upon occurrence of a negative voltage surge, closing the second switch device to enable a current to flow from ground to the input port through the energy release cell.