公开(公告)号：US11050244B2

公开(公告)日：2021-06-29

申请号：US15962524

申请日：2018-04-25

Applicant: QUALCOMM Incorporated

Inventor： Yikai Wang ,  Joseph Rutkowski

IPC: H02H9/04 ,  H03K17/22 ,  H03F1/30 ,  G01R19/165 ,  H03K5/06

Abstract: Certain aspects of the present disclosure provide a voltage transient detection circuit. The circuit generally includes a first switch having a first terminal coupled to an input signal source node, and a second switch having a first terminal coupled to the input signal source node. The apparatus includes a first shunt capacitive element coupled to a second terminal of the first switch, a second shunt capacitive element coupled to a second terminal of the second switch, a differential circuit having a first input coupled to the second terminal of the first switch, a second input coupled to the second terminal of the second switch, and an output coupled to an output node of the voltage transient detection circuit. For certain aspects, the apparatus also includes a first current source (selectively) coupled to the first shunt capacitive element and a second current source (selectively) coupled to the second shunt capacitive element.

公开(公告)号：US20170040892A1

公开(公告)日：2017-02-09

申请号：US14818209

申请日：2015-08-04

Applicant: QUALCOMM Incorporated

Inventor： Joseph Rutkowski ,  Yikai Wang ,  Jiwei Chen

IPC: H02M3/158

CPC classification number: H02M3/158 ,  G05F1/618 ,  H02M2001/0009

Abstract: In one embodiment, a switching regulator includes an inductor, a first switch, and a second switch. The first and second switches generate current in the inductor. Inductor current may flow through the second switch with both a positive and negative polarity. Voltages on terminals of the second switch may be sensed, and an offset applied to generate a level shifted signal. In one embodiment, the switching regulator is a boost switching regulator, and the offset is generated using a current source. Matched MOS transistor switches may be used to couple voltages on terminals of the second switch to amplifier inputs, and the offset is introduced across an MOS switch coupled between one amplifier input and the output.

Abstract translation: 在一个实施例中，开关调节器包括电感器，第一开关和第二开关。 第一和第二开关在电感器中产生电流。 电感电流可以通过正极和负极两者流过第二开关。 可以感测第二开关的端子上的电压，并且施加用于产生电平移位信号的偏移。 在一个实施例中，开关调节器是升压开关调节器，并且使用电流源产生偏移。 匹配的MOS晶体管开关可用于将第二开关的端子上的电压耦合到放大器输入，并且偏移被引入耦合在一个放大器输入和输出之间的MOS开关。

公开(公告)号：US12126249B2

公开(公告)日：2024-10-22

申请号：US17653678

申请日：2022-03-07

Applicant: QUALCOMM Incorporated

Inventor： Joseph Dale Rutkowski ,  Yikai Wang ,  Navankur Beohar

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M1/0095 ,  H02M3/1582

Abstract: Certain aspects of the present disclosure generally relate to electronic circuits and, more particularly, to a power supply circuit and techniques for voltage regulation. One example method for voltage regulation is performed by a switched-mode power supply (SMPS). The method generally includes charging a first capacitive element during a first discharge phase of the SMPS having a first voltage rail and a second voltage rail, the first voltage rail being separate from the second voltage rail. Charging the first capacitive element may include directing a first current to flow from the second voltage rail to a reference potential node through the first capacitive element. In some aspects, the method also includes generating an output voltage at the output node during a first charge phase by directing a second current to flow from the first voltage rail to an inductive element of the SMPS through the first capacitive element.

公开(公告)号：US09780657B2

公开(公告)日：2017-10-03

申请号：US14805209

申请日：2015-07-21

Applicant: QUALCOMM Incorporated

Inventor： Yikai Wang ,  Joseph Rutkowski ,  Jiwei Chen

IPC: G05F1/56 ,  H02M3/158 ,  G05F1/618 ,  H02M1/42 ,  H02M3/156 ,  H02M1/00

CPC classification number: H02M3/158 ,  G05F1/618 ,  H02M1/4225 ,  H02M3/156 ,  H02M2001/0009

Abstract: The present disclosure pertains to circuits and methods for controlling a boost switching regulator based on inductor current. An input voltage is coupled to a first terminal of an inductor and the second terminal of the inductor is alternately coupled between a reference voltage and a boosted output voltage. The input voltage is further coupled to a first terminal of an integrator circuit, and a second terminal of the integrator circuit may be alternately coupled between the reference voltage and the boosted output voltage, for example, to produce a voltage corresponding to a current in the inductor. The present circuit may be used for voltage control or current control modes, or both, in a boost switching regulator.

公开(公告)号：US09755515B2

公开(公告)日：2017-09-05

申请号：US14818209

申请日：2015-08-04

Applicant: QUALCOMM Incorporated

Inventor： Joseph Rutkowski ,  Yikai Wang ,  Jiwei Chen

IPC: G05F1/56 ,  H02M3/158 ,  G05F1/618 ,  H02M1/00

CPC classification number: H02M3/158 ,  G05F1/618 ,  H02M2001/0009

Abstract: In one embodiment, a switching regulator includes an inductor, a first switch, and a second switch. The first and second switches generate current in the inductor. Inductor current may flow through the second switch with both a positive and negative polarity. Voltages on terminals of the second switch may be sensed, and an offset applied to generate a level shifted signal. In one embodiment, the switching regulator is a boost switching regulator, and the offset is generated using a current source. Matched MOS transistor switches may be used to couple voltages on terminals of the second switch to amplifier inputs, and the offset is introduced across an MOS switch coupled between one amplifier input and the output.

公开(公告)号：US20170025947A1

公开(公告)日：2017-01-26

申请号：US14805209

申请日：2015-07-21

Applicant: QUALCOMM Incorporated

Inventor： Yikai Wang ,  Joseph Rutkowski ,  Jiwei Chen

IPC: H02M3/158

CPC classification number: H02M3/158 ,  G05F1/618 ,  H02M1/4225 ,  H02M3/156 ,  H02M2001/0009

Abstract: The present disclosure pertains to circuits and methods for controlling a boost switching regulator based on inductor current. An input voltage is coupled to a first terminal of an inductor and the second terminal of the inductor is alternately coupled between a reference voltage and a boosted output voltage. The input voltage is further coupled to a first terminal of an integrator circuit, and a second terminal of the integrator circuit may be alternately coupled between the reference voltage and the boosted output voltage, for example, to produce a voltage corresponding to a current in the inductor. The present circuit may be used for voltage control or current control modes, or both, in a boost switching regulator.

Abstract translation: 本公开涉及用于基于电感器电流来控制升压开关稳压器的电路和方法。 输入电压耦合到电感器的第一端子，并且电感器的第二端子交替地耦合在参考电压和升压的输出电压之间。 输入电压还耦合到积分器电路的第一端子，并且积分器电路的第二端子可以交替耦合在参考电压和升压的输出电压之间，例如以产生对应于电流的电压 电感。 本升压电路可用于升压开关稳压器中的电压控制或电流控制模式或两者。