公开(公告)号：US11777483B1

公开(公告)日：2023-10-03

申请号：US17698867

申请日：2022-03-18

Applicant: NVIDIA CORPORATION

Inventor： Nishit Harshad Shah ,  Ting Ku ,  Krishnamraju Kurra ,  Gunaseelan Ponnuvel ,  Tezaswi Raja ,  Suhas Satheesh

IPC: H03K5/24 ,  H03K19/20

CPC classification number: H03K5/24 ,  H03K19/20

Abstract: In various embodiments, a comparison circuit compares voltages within an integrated circuit. The comparison circuit includes a comparison capacitor, an inverter, and multiple switches. A first terminal of the comparison capacitor is coupled to both a first terminal of a first switch and a first terminal of a second switch. A second terminal of the comparison capacitor is coupled to both a first terminal of a third switch and an input of the inverter. An output of the inverter is coupled to both a second terminal of the third switch and a first terminal of a fourth switch. A second terminal of the fourth switch is coupled to a first terminal of a fifth switch and a first output of the comparison circuit. At least a portion of the switches are turned on during a comparison model and are turned off during a reset mode.

公开(公告)号：US11619661B1

公开(公告)日：2023-04-04

申请号：US17698879

申请日：2022-03-18

Applicant: NVIDIA CORPORATION

Inventor： Nishit Harshad Shah ,  Ting Ku ,  Krishnamraju Kurra ,  Gunaseelan Ponnuvel ,  Tezaswi Raja ,  Suhas Satheesh

IPC: G01R19/165 ,  G01R19/00 ,  G06F1/04 ,  H03K19/20

Abstract: In various embodiments, a current measurement circuit measures an input current within an integrated circuit. The current measurement circuit includes an integration capacitor, an operational amplifier, a comparison capacitor, an inverter, and multiple switches. The current measurement circuit is coupled to a clocking circuit that, during operation, generates a two-phase clock having a frequency that is proportional to the input current. At least a portion of the switches are turned on during a first phase of the two-phase clock and are turned off during a second phase of the two-phase clock.