公开(公告)号：US20240427361A1

公开(公告)日：2024-12-26

申请号：US18340759

申请日：2023-06-23

Applicant: Apple Inc.

Inventor： Sechang Oh ,  Soheil Golara ,  Denis C. Daly ,  Seyedeh Sedigheh Hashemi ,  Mansour Keramat

IPC: G05F1/46 ,  G05F1/56 ,  G06F1/26

Abstract: A voltage reference circuit included in a computer system includes an asymmetric amplifier circuit that includes two metal-oxide semiconductor field-effect transistors with different threshold voltages. The voltage reference circuit also includes an output circuit that generates, using a control signal, a bias signal and an output current that is used by a divider circuit to generate a reference voltage and a feedback voltage. The reference voltage and bias signal are used by the amplifier circuit to generate the control signal, which is based on a difference between the transistors' threshold voltages.

公开(公告)号：US12216484B2

公开(公告)日：2025-02-04

申请号：US18340759

申请日：2023-06-23

Applicant: Apple Inc.

Inventor： Sechang Oh ,  Soheil Golara ,  Denis C. Daly ,  Seyedeh Sedigheh Hashemi ,  Mansour Keramat

IPC: G06F1/26 ,  G05F1/46 ,  G05F1/56

Abstract: A voltage reference circuit included in a computer system includes an asymmetric amplifier circuit that includes two metal-oxide semiconductor field-effect transistors with different threshold voltages. The voltage reference circuit also includes an output circuit that generates, using a control signal, a bias signal and an output current that is used by a divider circuit to generate a reference voltage and a feedback voltage. The reference voltage and bias signal are used by the amplifier circuit to generate the control signal, which is based on a difference between the transistors' threshold voltages.