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公开(公告)号：US20180129234A1
公开(公告)日：2018-05-10
申请号：US15703825
申请日：2017-09-13
Applicant: QUALCOMM Incorporated
Inventor： Aaron Melgar , Christian Sporck , Chunping Song , David Wong , Rashed Hoque , Neal Horovitz , Hector Ivan Oporta , Daryl Bergstrom
CPC classification number: G05F1/575 , G05F1/563 , H02M1/4225 , H02M3/156 , H02M3/158 , H02M3/1582 , H02M3/1588 , H02M3/33507 , H02M2001/0045 , H02M2001/007
Abstract: A configurable charge converter may include an adaptive low-dropout regulator. The adaptive low-dropout regulator may include a headroom detection circuit and a power supply controller. The headroom detection circuit may monitor a voltage drop across a field effect transistor (FET) and cause a programmable power supply to increase or decrease an output voltage accordingly. In some aspects, the configurable charge converter may include an adaptive low-dropout regulator and a buck/boost converter. The output power of the configurable charge controller may be provided by the adaptive low-dropout regulator, the buck/boost converter, or by both the adaptive low-dropout regulator and the buck/boost converter operating in combination.
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公开(公告)号：US10185342B2
公开(公告)日：2019-01-22
申请号：US15703825
申请日：2017-09-13
Applicant: QUALCOMM Incorporated
Inventor： Aaron Melgar , Christian Sporck , Chunping Song , David Wong , Rashed Hoque , Neal Horovitz , Hector Ivan Oporta , Daryl Bergstrom
Abstract: A configurable charge converter may include an adaptive low-dropout regulator. The adaptive low-dropout regulator may include a headroom detection circuit and a power supply controller. The headroom detection circuit may monitor a voltage drop across a field effect transistor (FET) and cause a programmable power supply to increase or decrease an output voltage accordingly. In some aspects, the configurable charge converter may include an adaptive low-dropout regulator and a buck/boost converter. The output power of the configurable charge controller may be provided by the adaptive low-dropout regulator, the buck/boost converter, or by both the adaptive low-dropout regulator and the buck/boost converter operating in combination.
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公开(公告)号：US11527951B2
公开(公告)日：2022-12-13
申请号：US17125571
申请日：2020-12-17
Applicant: QUALCOMM Incorporated
Inventor： Yue Jing , Sanghwa Jung , David Wong
Abstract: Certain aspects of the present disclosure generally relate to soft starting a switched-mode power supply (SMPS) circuit operating as a charge pump in a reverse multiply-by-two mode. One example SMPS circuit generally includes a plurality of transistors, a capacitive element coupled to the plurality of transistors, and a current sink coupled between the capacitive element and a reference potential node for the SMPS circuit. For certain aspects, the current sink is configured to be enabled during a first phase of a soft start operation for the SMPS circuit, but is configured to be disabled during a second phase of the soft start operation and during normal operation for the SMPS circuit.
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公开(公告)号：US10389163B2
公开(公告)日：2019-08-20
申请号：US15789663
申请日：2017-10-20
Applicant: QUALCOMM Incorporated
Inventor： David Wong , Neal Horovitz , Ta-Tung Yen , Sanghwa Jung , Cheong Kun , Kin Siu Fung
Abstract: Enhanced reverse boosting detection in a wireless charging scheme is disclosed. In some implementations, a minimum mid-level input voltage regulation (VMID_MIN regulation) loop is provided to regulate an input voltage from a wirelessly coupled power source when a mid-level of the input voltage falls below a predetermined threshold. The input voltage is provided to a buck converter within a wireless charging receiver. An input missing poller signal generator is provided to generate an input missing poller (IMP) signal if the VMID_MIN regulation loop becomes active and the buck converter has entered a discontinuous mode.
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