公开(公告)号：US11086342B1

公开(公告)日：2021-08-10

申请号：US17020121

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

Inventor： Jong Jin Kim ,  Raymond Rosik ,  Michael Naone Farias ,  Brett Walker

IPC: G11C5/14 ,  G05F1/46 ,  H03K5/24 ,  H03K19/20

Abstract: Techniques and apparatus for selecting a maximum input supply voltage from multiple input power supplies. An example maximum input supply selection circuit includes a parallel array of comparators and selection logic to select the maximum input supply voltage, supply present detectors, comparator settling logic including a warm-up delay timer to provide for comparator settling, and comparator enable logic for disabling all comparators and entering an ultra-low power mode.

公开(公告)号：US09755518B2

公开(公告)日：2017-09-05

申请号：US15179229

申请日：2016-06-10

Applicant: QUALCOMM Incorporated

Inventor： Mukesh Bansal ,  Michael McGowan ,  Iulian Mirea ,  Qadeer Khan ,  Troy Stockstad ,  Brett Walker ,  Todd Sutton

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/158 ,  G01R19/25 ,  H02M1/08 ,  H02M2001/0009

Abstract: Features and advantages of the present disclosure include a switching regulator and current measurement circuit. In one embodiment, a switching transistor in the switching regulator has a first voltage on a first terminal and a switching voltage on a second terminal. A current measurement circuit has first and second input terminals. A first switch couples the second terminal of the switching transistor to the first terminal of the current measurement circuit when the switching transistor is on, where the second input terminal of the current measurement circuit is coupled to the first terminal of the switching transistor and measurement(s) may be taken. When the switching transistor is off, the first and second input terminals of the current measurement circuit are coupled together, and measurements emulate zero current through the switching transistor.

公开(公告)号：US20170229962A1

公开(公告)日：2017-08-10

申请号：US15179229

申请日：2016-06-10

Applicant: QUALCOMM Incorporated

Inventor： Mukesh Bansal ,  Michael McGowan ,  Iulian Mirea ,  Qadeer Khan ,  Troy Stockstad ,  Brett Walker ,  Todd Sutton

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/158 ,  G01R19/25 ,  H02M1/08 ,  H02M2001/0009

Abstract: Features and advantages of the present disclosure include a switching regulator and current measurement circuit. In one embodiment, a switching transistor in the switching regulator has a first voltage on a first terminal and a switching voltage on a second terminal. A current measurement circuit has first and second input terminals. A first switch couples the second terminal of the switching transistor to the first terminal of the current measurement circuit when the switching transistor is on, where the second input terminal of the current measurement circuit is coupled to the first terminal of the switching transistor and measurement(s) may be taken. When the switching transistor is off, the first and second input terminals of the current measurement circuit are coupled together, and measurements emulate zero current through the switching transistor.