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公开(公告)号：US20230299655A1
公开(公告)日：2023-09-21
申请号：US18324694
申请日：2023-05-26
Applicant: Qualcomm Incorporated
Inventor： Kan Li , Guolei Yu , Hua Guan , Todd Robert Sutton
CPC classification number: H02M1/0029 , H02M3/158 , H02M1/08
Abstract: An apparatus is disclosed for adaptive switch driving. In an example aspect, the apparatus includes a switching circuit configured to selectively be in a first state that provides an input voltage as an output voltage, be in a second state that provides a ground voltage as the output voltage, or be in a third state that causes the output voltage to change from the input voltage to the ground voltage according to a slew rate. The third state enables the switching circuit to transition from the first state to the second state. The switching circuit is also configured to adjust the slew rate of the output voltage for the third state responsive to at least one of the following: a change in a magnitude of a direct-current supply voltage or a change in a magnitude of an input current.
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公开(公告)号：US20190334512A1
公开(公告)日：2019-10-31
申请号：US15966939
申请日：2018-04-30
Applicant: Qualcomm Incorporated
Inventor： Guolei Yu , Ajay Kumar Kosaraju , Marko Koski
Abstract: An apparatus is disclosed that includes a voltage-controlled delay generator. In an example aspect, the apparatus includes voltage-controlled timing circuitry, duty cycle detection circuitry, and output circuitry. The voltage-controlled timing circuitry is configured to receive a control voltage. The voltage-controlled timing circuitry includes a current source, a control transistor, and a capacitor that are configured to produce a voltage indicator based on the control voltage. The duty cycle detection circuitry is coupled to the voltage-controlled timing circuitry. The duty cycle detection circuitry is configured to detect the voltage indicator and provide a duty cycle indicator based on the voltage indicator. The output circuitry is coupled to the duty cycle detection circuitry and is configured to generate a duty signal based on the duty cycle indicator.
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公开(公告)号：US10439597B1
公开(公告)日：2019-10-08
申请号：US15953157
申请日：2018-04-13
Applicant: Qualcomm Incorporated
Inventor： Guolei Yu , Ajay Kumar Kosaraju , Charles Tuten , Marko Koski , Aniruddha Bashar
Abstract: The present disclosure provides a duty locked loop circuit that includes a switch network including a first electronic switch device controlled by a first control signal that is based on a first input signal and a second electronic switch device controlled by a second control signal that is based on a second input signal. The duty locked loop circuit includes an integrator circuit electrically connected to the switch network. The integrator circuit is configured to generate an output voltage proportional to an integral of a difference between a first duty cycle of the first input signal and a second duty cycle of the second input signal. The duty locked loop circuit includes an output circuit configured to generate an output signal having an output duty cycle that is based on the output voltage.
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公开(公告)号：US20210367512A1
公开(公告)日：2021-11-25
申请号：US17307904
申请日：2021-05-04
Applicant: Qualcomm Incorporated
Inventor： Kan Li , Guolei Yu , Hua Guan , Todd Robert Sutton
Abstract: An apparatus is disclosed for adaptive switch driving. In an example aspect, the apparatus includes a switching circuit configured to selectively be in a first state that provides an input voltage as an output voltage, be in a second state that provides a ground voltage as the output voltage, or be in a third state that causes the output voltage to change from the input voltage to the ground voltage according to a slew rate. The third state enables the switching circuit to transition from the first state to the second state. The switching circuit is also configured to adjust the slew rate of the output voltage for the third state responsive to at least one of the following: a change in a magnitude of a direct-current supply voltage or a change in a magnitude of an input current.
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公开(公告)号：US10027225B2
公开(公告)日：2018-07-17
申请号：US14656456
申请日：2015-03-12
Applicant: QUALCOMM Incorporated
Inventor： Guolei Yu , Yicheng Wan , Chunlei Shi , Sugato Mukherjee
Abstract: Disclosed is switching power supply that includes a pulse frequency modulation (PFM) mode of operation current feedback control. A reference current source is configured to output a reference current at one of several selectable levels. The level of the reference current may vary during operation of the current feedback control loop.
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Patent Agency Ranking
公开(公告)号：US20160268896A1
公开(公告)日：2016-09-15
申请号：US14656456
申请日：2015-03-12
Applicant: QUALCOMM Incorporated
Inventor： Guolei Yu , Yicheng Wan , Chunlei Shi , Sugato Mukherjee
IPC: H02M3/158
CPC classification number: H02M3/156 , H02M1/14 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
Abstract: Disclosed is switching power supply that includes a pulse frequency modulation (PFM) mode of operation current feedback control. A reference current source is configured to output a reference current at one of several selectable levels. The level of the reference current may vary during operation of the current feedback control loop.
Abstract translation: 公开了包括脉冲频率调制（PFM）工作模式电流反馈控制的开关电源。 参考电流源被配置为以几个可选电平之一输出参考电流。 参考电流的电平可能在电流反馈控制环路的操作期间变化。
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公开(公告)号：US12249901B2
公开(公告)日：2025-03-11
申请号：US18324694
申请日：2023-05-26
Applicant: Qualcomm Incorporated
Inventor： Kan Li , Guolei Yu , Hua Guan , Todd Robert Sutton
Abstract: An apparatus is disclosed for adaptive switch driving. In an example aspect, the apparatus includes a switching circuit configured to selectively be in a first state that provides an input voltage as an output voltage, be in a second state that provides a ground voltage as the output voltage, or be in a third state that causes the output voltage to change from the input voltage to the ground voltage according to a slew rate. The third state enables the switching circuit to transition from the first state to the second state. The switching circuit is also configured to adjust the slew rate of the output voltage for the third state responsive to at least one of the following: a change in a magnitude of a direct-current supply voltage or a change in a magnitude of an input current.
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公开(公告)号：US11664716B2
公开(公告)日：2023-05-30
申请号：US17307904
申请日：2021-05-04
Applicant: Qualcomm Incorporated
Inventor： Kan Li , Guolei Yu , Hua Guan , Todd Robert Sutton
CPC classification number: H02M1/0029 , H02M3/158 , H02M1/08 , H02M1/385
Abstract: An apparatus is disclosed for adaptive switch driving. In an example aspect, the apparatus includes a switching circuit configured to selectively be in a first state that provides an input voltage as an output voltage, be in a second state that provides a ground voltage as the output voltage, or be in a third state that causes the output voltage to change from the input voltage to the ground voltage according to a slew rate. The third state enables the switching circuit to transition from the first state to the second state. The switching circuit is also configured to adjust the slew rate of the output voltage for the third state responsive to at least one of the following: a change in a magnitude of a direct-current supply voltage or a change in a magnitude of an input current.
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公开(公告)号：US10715122B2
公开(公告)日：2020-07-14
申请号：US15966939
申请日：2018-04-30
Applicant: Qualcomm Incorporated
Inventor： Guolei Yu , Ajay Kumar Kosaraju , Marko Koski
Abstract: An apparatus is disclosed that includes a voltage-controlled delay generator. In an example aspect, the apparatus includes voltage-controlled timing circuitry, duty cycle detection circuitry, and output circuitry. The voltage-controlled timing circuitry is configured to receive a control voltage. The voltage-controlled timing circuitry includes a current source, a control transistor, and a capacitor that are configured to produce a voltage indicator based on the control voltage. The duty cycle detection circuitry is coupled to the voltage-controlled timing circuitry. The duty cycle detection circuitry is configured to detect the voltage indicator and provide a duty cycle indicator based on the voltage indicator. The output circuitry is coupled to the duty cycle detection circuitry and is configured to generate a duty signal based on the duty cycle indicator.
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公开(公告)号：US10148174B2
公开(公告)日：2018-12-04
申请号：US15348923
申请日：2016-11-10
Applicant: QUALCOMM Incorporated
Inventor： Ajay Kumar Kosaraju , Guolei Yu , Yi-Cheng Wan , Sugato Mukherjee
IPC: H02M3/157 , G01R19/165 , H02M1/08 , H02M3/156 , H02M1/00
Abstract: A duty cycle estimation circuit includes a latch circuit that receives a clock signal for a voltage regulator. The latch circuit outputs a duty cycle estimate. The duty cycle estimation circuit also includes a low pass filter coupled to an output of the latch circuit to receive the duty cycle estimate. The duty cycle estimation circuit further includes a comparator that receives, as input, an output of the low pass filter and a voltage regulator output. The comparator feeds back a feedback signal to the latch circuit.
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