Patent ID: 11955955
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An integrated circuit (IC) comprising: first and second power supply nodes; a power supply reference node; a protection circuit comprising a first output terminal and first and second series of n-type high electron mobility transistors (HEMTs) coupled between the first power supply node and the power supply reference node; a gate driver comprising a second output terminal and third through fifth series of n-type HEMTs coupled between the first power supply node and the power supply reference node; and an n-type HEMT switching device coupled between the second power supply node and the power supply reference node, wherein the first series of n-type HEMTs is configured to control a first voltage on a first node responsive to a first power supply voltage on the first power supply node, the second series of n-type HEMTs is configured to control a second voltage on the first output terminal responsive to the first voltage, the third series of n-type HEMTs is configured to control an internal signal on a second node responsive to the second voltage and to an input signal, the fourth series of n-type HEMTs is configured to control a third voltage on a third node responsive to the internal signal, the fifth series of n-type HEMTs is configured to control an output signal at the second output terminal responsive to the internal signal and the third voltage, and the n-type HEMT switching device is configured to couple a first sub-circuit to one of the second power supply node, the power supply reference node, or a second sub-circuit responsive to the output signal.