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公开(公告)号：US11005368B2
公开(公告)日：2021-05-11
申请号：US16573825
申请日：2019-09-17
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Pengfei Li , Moataz Abdelsamie Abdelfattah , Iulian Mirea , Song Shi
Abstract: A method for unbalancing a tri-level switching regulator uses hysteretic control when switching across multiple states of the tri-level switching regulator. The method includes determining a battery voltage and an output voltage of the tri-level switching regulator. The method also includes dynamically adjusting at least one of a first hysteretic window of a first hysteretic comparator associated with a second switching state of the tri-level switching regulator and a second hysteretic window of a second hysteretic comparator associated with a first switching state of the tri-level switching regulator based on the battery voltage and the output voltage.
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Patent Agency Ranking
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
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.
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3.发明授权公开(公告)号：US09442140B2
公开(公告)日：2016-09-13
申请号：US14207338
申请日：2014-03-12
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Qadeer A Khan , Chunlei Shi
CPC classification number: G01R19/2506 , H02M3/1584 , H02M2001/0009 , H02M2001/0025
Abstract: Exemplary embodiments are related to switching power converters. A switching power converter may comprise a plurality of control unit configured for average current mode control, wherein each control unit of the plurality comprises a dedicated proportional control unit. The switching power converter may further comprise an integrator coupled to each control unit of the plurality of control unit and configured to convey a signal to each control unit.
Abstract translation: 示例性实施例涉及开关功率转换器。 开关功率转换器可以包括被配置用于平均电流模式控制的多个控制单元，其中多个控制单元包括专用比例控制单元。 开关功率转换器还可以包括耦合到多个控制单元中的每个控制单元并被配置为将信号传送到每个控制单元的积分器。
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公开(公告)号：US11671081B2
公开(公告)日：2023-06-06
申请号：US17119817
申请日：2020-12-11
Applicant: QUALCOMM Incorporated
Inventor： Mukesh Bansal , Iulian Mirea , Xun Liu
CPC classification number: H03K3/356017 , H02M3/158 , H02M1/088
Abstract: Certain aspects of the present disclosure are directed to a regulator. The regulator generally includes a source follower circuit and a low-voltage assist circuit. The low-voltage assist circuit generally includes a first transistor having a gate coupled to an output node of the source follower circuit, a voltage comparison circuit having a first input coupled to a source of the first transistor and a second input coupled to a control input node of the source follower circuit, and a second transistor having a gate coupled to an output of the voltage comparison circuit and a drain coupled to the output node of the source follower circuit.
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公开(公告)号：US10804854B1
公开(公告)日：2020-10-13
申请号：US16556085
申请日：2019-08-29
Applicant: QUALCOMM Incorporated
Inventor： Moataz Abdelsamie Abdelfattah , Mukesh Bansal , Iulian Mirea , Song Shi , Pengfei Li
Abstract: A tri-level converter provides three levels of power supply to a power amplifier that includes a supply path. The supply path has a first transistor and a first inherent body diode associated with the first transistor, as well as a second transistor and a second inherent body diode associated with the second transistor. A polarity of the second body diode is reversed relative to a polarity of the first body diode. A first driver is configured to drive the first transistor and the first inherent body diode to control a power supply, including a battery supply signal, to an output of the tri-level converter. The tri-level converter is coupled to a switching node.
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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
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.
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