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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：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：US10523042B2
公开(公告)日：2019-12-31
申请号：US15712770
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Chunping Song , Jialei Xu , Stuart Pullen , Steve Hawley , Neal Horovitz , Shashank Prakash Mane
Abstract: Certain aspects of the present disclosure generally relate to reducing the size of parallel charging circuits for charging a battery in a portable device, while still effectively providing input current sensing and reverse current blocking capabilities. One example battery charging circuit generally includes: (1) a first charging circuit comprising a first charging output connectable to a battery and a first converter to provide power to the first charging output; and (2) a second charging circuit comprising a second charging output connectable to the battery, a second converter to provide power to the second charging output, a first transistor coupled between an output of the second converter and the second charging output, and a current-sensing circuit coupled to the output of the second converter to sense a current through the first transistor.
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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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