Patent ID: 11955796
Assignee: APPLE INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method, comprising:
generating, by a driver circuit, an output signal on a signal port of an integrated circuit using a voltage level of a regulated power supply node;
coupling, by a first protection circuit, the signal port to an internal power supply node of the integrated circuit in response to detecting an electrostatic discharge event, wherein the internal power supply node is coupled to a power supply port of the integrated circuit via a resistor;
increasing, by a second protection circuit coupled to the internal power supply node, a voltage level of an input to the driver circuit in response to detecting the electrostatic discharge event; and
coupling, by the second protection circuit using a diode, the regulated power supply node to a ground supply node in response to detecting the electrostatic discharge event.