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公开(公告)号：US10122168B2
公开(公告)日：2018-11-06
申请号：US15269893
申请日：2016-09-19
Applicant: QUALCOMM Incorporated
Inventor： Ricardo Goncalves , Joshua Zazzera , Edgar Marti-Arbona , Juha Oikarinen , Joseph Rutkowski
Abstract: An apparatus and method for to incrementally reduce (e.g., de-rate) a power supply voltage output (VOUT) of a regulator to multiple subsystems in response to detecting high power conditions in a client device is described. In one instance, multiple low power client devices and a high power consumption client device are coupled to a power grid of the power management system with a power management integrated circuit (PMIC) supplying power to the power grid. The PMIC includes a buck-or-boost switching regulator including a load current adjustment device to de-rate the high power consumption device when a sum of the current consumed by the high power consumption device and the low power client devices is above a predetermined threshold.
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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.
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公开(公告)号：US10355590B2
公开(公告)日：2019-07-16
申请号：US15632879
申请日：2017-06-26
Applicant: QUALCOMM Incorporated
Inventor： Taewoo Kwak , Joseph Rutkowski
Abstract: Method and apparatus is disclosed for providing a controlled pre-charging current for capacitive loads coupled to a boost converter. For at least some embodiments, the boost converter may include a high-side field effect transistor (FET) and a low-side FET. The boost converter may provide the pre-charge current by periodically enabling the high-side FET while the low-side FET is maintained in an off state. The high-side FET may be enabled by a square-wave signal. The pre-charge current may be delivered until the output voltage of the boost converter exceeds a reference voltage. After the output voltage exceeds the reference voltage, the boost converter may transition to a normal (switching) operation.
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公开(公告)号：US10056871B2
公开(公告)日：2018-08-21
申请号：US15473538
申请日：2017-03-29
Applicant: QUALCOMM Incorporated
Inventor： Taewoo Kwak , Joseph Rutkowski
CPC classification number: H03F3/45076 , H03F1/0233 , H03F1/14 , H03F1/342 , H03F3/45071 , H03F3/45183 , H03F3/45475 , H03F3/45636 , H03F2203/45116 , H03F2203/45138 , H03F2203/45264 , H03F2203/45526 , H03F2203/45604
Abstract: A loop compensation circuit includes a differential difference amplifier having a first transconductance stage with a first input terminal and a second input terminal. The first input terminal is coupled to a voltage reference and the second input terminal is coupled to a feedback node. The amplifier also includes a second transconductance stage having a third input terminal and a fourth input terminal. The third input terminal is coupled to a virtually specified fixed voltage and the fourth input terminal is coupled to a fixed specified voltage. The loop compensation circuit also includes a feedback impedance coupled between an output of the differential difference amplifier and the third input terminal and a second impedance between the third input terminal and the fixed specified voltage.
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公开(公告)号：US10256813B2
公开(公告)日：2019-04-09
申请号：US15497337
申请日：2017-04-26
Applicant: QUALCOMM Incorporated
Inventor： Taewoo Kwak , Joseph Rutkowski
IPC: H03K3/00 , H03K17/687 , H02M3/158 , H02M1/08
Abstract: Techniques for improving the transient response in a switching converter are provided. An example of a gate driving circuit for driving a high-side switch in a switching converter according to the disclosure includes a first switch operably coupled to a source lead and a gate lead of the high-side switch, a first super source follower circuit operably coupled to the gate lead of the high-side switch, and a mid-voltage power supply operably coupled to the first super source follower circuit.
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Patent Agency Ranking
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。
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公开(公告)号：US20180375430A1
公开(公告)日：2018-12-27
申请号：US15632879
申请日：2017-06-26
Applicant: QUALCOMM Incorporated
Inventor： Taewoo Kwak , Joseph Rutkowski
Abstract: Method and apparatus is disclosed for providing a controlled pre-charging current for capacitive loads coupled to a boost converter. For at least some embodiments, the boost converter may include a high-side field effect transistor (FET) and a low-side FET. The boost converter may provide the pre-charge current by periodically enabling the high-side FET while the low-side FET is maintained in an off state. The high-side FET may be enabled by a square-wave signal. The pre-charge current may be delivered until the output voltage of the boost converter exceeds a reference voltage. After the output voltage exceeds the reference voltage, the boost converter may transition to a normal (switching) operation.
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8.发明授权公开(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
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.
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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
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.
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10.发明申请CIRCUITS AND METHODS FOR CONTROLLING A BOOST SWITCHING REGULATOR BASED ON INDUCTOR CURRENT 有权基于电感电流控制增压开关稳压器的电路及方法公开(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。
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