公开(公告)号：US11515786B2

公开(公告)日：2022-11-29

申请号：US16553759

申请日：2019-08-28

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Xiaocheng Jing ,  Amir Parayandeh ,  Xun Liu

IPC: H02M3/156 ,  H02M1/00

Abstract: Aspects of the present disclosure generally relate to methods and apparatus for continuous current sensing for a single-inductor multiple-output (SIMO) regulator. One example method includes operating a plurality of switches of the SIMO regulator, via a plurality of control signals, according to a plurality of switching states using a switching controller, sensing currents associated with at least a portion of the plurality of switches of the SIMO regulator using a plurality of current sense circuits, and selectively outputting a sense current from one of the plurality of current sense circuits based on a change in the plurality of controls signals occurring between a transition from a first switching state to a second switching state of the plurality of switching states.

公开(公告)号：US11258409B2

公开(公告)日：2022-02-22

申请号：US16929353

申请日：2020-07-15

Applicant: QUALCOMM Incorporated

Inventor： Justin Philpott ,  Xiaocheng Jing ,  Jingxue Lu ,  Iulian Mirea

IPC: H03F3/04 ,  H03F1/30 ,  H04B1/04 ,  H04B1/16 ,  H03F1/02

Abstract: Aspects of the present disclosure provide a high voltage switch with a fast turn-off. An example power supply circuit generally includes a capacitive element for coupling to a power terminal of an amplifier, a first switch configured to be closed in a first mode and to be open in a second mode, a second switch coupled in series between the first switch and the capacitive element and configured to be closed in the first mode and to be open in the second mode, a first circuit coupled to the first switch and configured to charge the capacitive element and power the amplifier in the first mode, and a buffer circuit having an output coupled to a first node and configured to output a first voltage level greater than half of a second voltage level at a second node.

公开(公告)号：US10924017B2

公开(公告)日：2021-02-16

申请号：US16440434

申请日：2019-06-13

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Amir Parayandeh ,  Xiaocheng Jing ,  Justin Philpott ,  Lin Xue

IPC: H02M3/158 ,  H02M1/00

Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for operating a switched-mode power supply (SMPS). One example method generally includes selecting a first output of a plurality of outputs of the SMPS based on a power demand associated with each of the plurality of outputs if a voltage at the first output is less than a reference voltage associated with the first output, by selecting as the first output one of the plurality of outputs having the highest power demand, and based on an amount of overcharge associated with the first output if the voltage at the first output is greater than the reference voltage, by selecting as the first output one of the plurality of outputs having the lowest amount of overcharge. The method may also include directing current across an inductive element of the SMPS to the first output based on the selection.

公开(公告)号：US10958168B2

公开(公告)日：2021-03-23

申请号：US16426494

申请日：2019-05-30

Applicant: QUALCOMM Incorporated

Inventor： Linfei Guo ,  Chengwu Tao ,  Joseph Duncan ,  Xiaocheng Jing ,  Amir Parayandeh ,  Justin Philpott

IPC: H02M3/156 ,  H02M3/158 ,  H02M1/00

Abstract: Methods and apparatus for operating a switched-mode power supply (SMPS). One example method generally includes comparing a signal representative of an amount of current across an inductive element of the SMPS with at least three thresholds, selecting a configuration of the SMPS based on the comparison, and configuring the SMPS based on the selection.

公开(公告)号：US10819233B2

公开(公告)日：2020-10-27

申请号：US16246107

申请日：2019-01-11

Applicant: QUALCOMM Incorporated

Inventor： Lin Xue ,  Iulian Mirea ,  Xiaocheng Jing ,  Jongshick Ahn ,  Amir Parayandeh ,  Linfei Guo

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

Abstract: A power converter includes a voltage source for generating an input voltage, and a regulation circuit for generating a set of output voltages based on the input voltage. The regulation circuit regulates the set of output voltages in different manners based on whether the set of output voltages is greater or less than a set of corresponding reference voltages, respectively. If one or more output voltages are less than one or more of the corresponding reference voltages, the regulation circuit regulates only those one or more output voltages during a current regulation interval based on an error voltage related to one or more differences between the one or more output voltages and the corresponding one or more reference voltages, respectively. If all output voltages are greater than the corresponding reference voltages, the regulation circuit regulates only the output voltage associated with the largest load current during the current regulation interval.