公开(公告)号：US20180004276A1

公开(公告)日：2018-01-04

申请号：US15199567

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Mong Chit Wong ,  Nam Dang ,  Rajeev Jain ,  Sassan Shahrokhinia ,  Yu Huang ,  Lipeng Cao

IPC: G06F1/32

CPC classification number: G06F1/3234 ,  G06F1/263 ,  H01L23/50 ,  H02J1/08 ,  H02J1/108 ,  H02J9/061

Abstract: An integrated circuit (IC) is disclosed herein for adaptive power multiplexing with a power distribution network. In an example aspect, the integrated circuit includes a first power rail, a second power rail, and a load power rail. The integrated circuit also includes multiple power-multiplexer tiles and power-multiplexer control circuitry. The multiple power-multiplexer tiles are coupled in series in a chained arrangement and configured to jointly perform a power-multiplexing operation. Each power-multiplexer tile is configured to switch between coupling the load power rail to the first power rail and coupling the load power rail to the second power rail. The power-multiplexer control circuitry is configured to control a direction of current flow to prevent cross-conduction between the first power rail and the second power rail during the power-multiplexing operation.

公开(公告)号：US20170052552A1

公开(公告)日：2017-02-23

申请号：US14831874

申请日：2015-08-21

Applicant: QUALCOMM Incorporated

Inventor： Farsheed Mahmoudi ,  Sassan Shahrokhinia ,  James Thomas Doyle

IPC: G05F1/575

CPC classification number: G05F1/575

Abstract: Low dropout (LDO) regulators are described herein for providing regulated voltages for multiple voltage domains. In one embodiment, a voltage regulator comprises a plurality of pass transistors, each of the plurality of pass transistors being coupled between an input supply rail and a respective one of a plurality of regulator outputs. The voltage regulator also comprises a plurality of averaging resistors configured to average a plurality of feedback voltages to generate an average feedback voltage, wherein each of the plurality of feedback voltages provides voltage feedback for a respective one of the plurality of regulator outputs. The voltage regular further comprises an amplifier having a first input coupled to the average feedback voltage, and a second input coupled to a reference voltage, wherein the amplifier is configured to drive the plurality of pass transistors in a direction that reduces a difference between the reference voltage and the average feedback voltage.

Abstract translation: 本文描述了低压降（LDO）调节器，用于为多个电压域提供调节电压。 在一个实施例中，电压调节器包括多个传输晶体管，多个传输晶体管中的每一个耦合在输入电源轨和多个调节器输出中的相应一个之间。 电压调节器还包括多个平均电阻器，其被配置为平均多个反馈电压以产生平均反馈电压，其中多个反馈电压中的每一个为多个调节器输出中的相应一个提供电压反馈。 电压规则还包括具有耦合到平均反馈电压的第一输入和耦合到参考电压的第二输入的放大器，其中放大器被配置为沿着减小参考电压之间的差的方向驱动多个传输晶体管 电压和平均反馈电压。