公开(公告)号：US08253405B2

公开(公告)日：2012-08-28

申请号：US12347711

申请日：2008-12-31

Applicant: Malay Trivedi ,  Jiang William ,  Brent D. Thomas ,  James T. Doyle ,  Rose Wang

Inventor： Malay Trivedi ,  Jiang William ,  Brent D. Thomas ,  James T. Doyle ,  Rose Wang

IPC: G05F1/00

CPC classification number: G06F1/26

Abstract: In general, in one aspect, the disclosure describes a high-speed multi-phase voltage regulator (VR) capable of sensing load current. For each phase leg, the VR includes a current mirror to mirror current in switching elements, a current sense to sense high side current in the current mirror, and a I-V converter to convert the sensed high side current to a voltage. The high side sensed current for each phase leg is averaged and the duty cycle for the VR is extracted. The average high side sensed current and the duty cycle are converted to digital by an A-D converter. Digital circuitry corrects the sensed current by adjusting for the gain and offset voltage of the VR. The adjusted sensed value is divided by the duty cycle to convert to load current and the average load current is multiplied by the number of phases operating to determine overall load current.

Abstract translation: 通常，一方面，本公开描述了能够感测负载电流的高速多相电压调节器（VR）。 对于每个相支路，VR包括用于在开关元件中镜像电流的电流镜，用于感测电流镜中的高侧电流的电流感测，以及将感测到的高侧电流转换为电压的I-V转换器。 对每个相位支路的高侧检测电流进行平均，并提取VR的占空比。 平均高侧检测电流和占空比由A-D转换器转换为数字。 数字电路通过调整VR的增益和失调电压来校正感测电流。 调整后的感测值除以占空比转换为负载电流，平均负载电流乘以确定总负载电流的相位数。

公开(公告)号：US20100164477A1

公开(公告)日：2010-07-01

申请号：US12347711

申请日：2008-12-31

Applicant: Malay Trivedi ,  Jiang William ,  Brent D. Thomas ,  James T. Doyle ,  Rose Wang

Inventor： Malay Trivedi ,  Jiang William ,  Brent D. Thomas ,  James T. Doyle ,  Rose Wang

IPC: G01R19/00 ,  G05F1/10

CPC classification number: G06F1/26

Abstract: In general, in one aspect, the disclosure describes a high-speed multi-phase voltage regulator (VR) capable of sensing load current. For each phase leg, the VR includes a current mirror to mirror current in switching elements, a current sense to sense high side current in the current mirror, and a I-V converter to convert the sensed high side current to a voltage. The high side sensed current for each phase leg is averaged and the duty cycle for the VR is extracted. The average high side sensed current and the duty cycle are converted to digital by an A-D converter. Digital circuitry corrects the sensed current by adjusting for the gain and offset voltage of the VR. The adjusted sensed value is divided by the duty cycle to convert to load current and the average load current is multiplied by the number of phases operating to determine overall load current.

Abstract translation: 通常，一方面，本公开描述了能够感测负载电流的高速多相电压调节器（VR）。 对于每个相支路，VR包括用于在开关元件中镜像电流的电流镜，用于感测电流镜中的高侧电流的电流感测，以及将感测到的高侧电流转换为电压的I-V转换器。 对每个相位支路的高侧检测电流进行平均，并提取VR的占空比。 平均高侧检测电流和占空比由A-D转换器转换为数字。 数字电路通过调整VR的增益和失调电压来校正感测电流。 调整后的感测值除以占空比转换为负载电流，平均负载电流乘以确定总负载电流的相位数。