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公开(公告)号：US20220360159A1
公开(公告)日：2022-11-10
申请号：US17315444
申请日：2021-05-10
Applicant: Qualcomm Incorporated
Inventor： Troy Lynn Stockstad , Yi-Cheng Wan , Marko Koski , Ajay Kumar Kosaraju
Abstract: An apparatus is disclosed for harvesting ringing energy. In an example aspect, the apparatus includes a bootstrap circuit. The bootstrap circuit includes a bootstrap capacitor and a bootstrap switch. The bootstrap switch includes a first terminal configured to accept an input voltage. The bootstrap switch also includes a second terminal coupled to the bootstrap capacitor. The bootstrap switch additionally includes a body diode comprising an anode coupled to the first terminal and a cathode coupled to the second terminal. The bootstrap switch is configured to be in an open state to charge the bootstrap capacitor via the body diode. The bootstrap switch is also configured to provide a voltage at the second terminal of the bootstrap switch. The voltage is greater than an average of the input voltage.
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Patent Agency Ranking
公开(公告)号：US11711007B2
公开(公告)日：2023-07-25
申请号：US17315444
申请日：2021-05-10
Applicant: Qualcomm Incorporated
Inventor： Troy Lynn Stockstad , Yi-Cheng Wan , Marko Koski , Ajay Kumar Kosaraju
CPC classification number: H02M1/0006 , H02M1/08 , H02M3/156 , H02M3/1582
Abstract: An apparatus is disclosed for harvesting ringing energy. In an example aspect, the apparatus includes a bootstrap circuit. The bootstrap circuit includes a bootstrap capacitor and a bootstrap switch. The bootstrap switch includes a first terminal configured to accept an input voltage. The bootstrap switch also includes a second terminal coupled to the bootstrap capacitor. The bootstrap switch additionally includes a body diode comprising an anode coupled to the first terminal and a cathode coupled to the second terminal. The bootstrap switch is configured to be in an open state to charge the bootstrap capacitor via the body diode. The bootstrap switch is also configured to provide a voltage at the second terminal of the bootstrap switch. The voltage is greater than an average of the input voltage.
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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：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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