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公开(公告)号：US20190379270A1
公开(公告)日：2019-12-12
申请号：US16004536
申请日：2018-06-11
Applicant: QUALCOMM Incorporated
Inventor： Stuart PULLEN , Michael BUI , Steve HAWLEY , Chunping SONG
Abstract: Methods and apparatus for current sensing and error correction in a switched-mode power supply composed of a high-side transistor coupled to a low-side transistor are described. One example method generally includes capturing a current associated with the low-side transistor at a first time corresponding to the low-side transistor turning off; capturing a current associated with the high-side transistor at a second time corresponding to a first delay after the high-side transistor turns on; capturing the current associated with the high-side transistor at a third time corresponding to the high-side transistor turning off; and applying a first correction current to a current-summing node of the current-sensing circuit for a first interval based on the first delay, wherein the first correction current is based on the captured current associated with the low-side transistor at the first time and on the captured current associated with the high-side transistor at the second time.
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Patent Agency Ranking
公开(公告)号：US20190148795A1
公开(公告)日：2019-05-16
申请号：US16169105
申请日：2018-10-24
Applicant: QUALCOMM Incorporated
Inventor： Steve HAWLEY , Giuseppe PINTO
Abstract: Certain aspects of the present disclosure provide apparatus and techniques for charging a multi-stack battery pack. For example, certain aspects provide a circuit for charging a battery pack. The circuit generally includes a voltage regulator circuit and charge pump circuitry having an input coupled to an output of the voltage regulator circuit, and an output coupled to a first battery charging terminal. In certain aspects, the first battery charging terminal may be configured to be coupled to a terminal of a first battery cell of the battery pack having multiple battery cells.
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3.发明申请公开(公告)号：US20180331564A1
公开(公告)日：2018-11-15
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
CPC classification number: H02J7/163 , G01R19/0092 , H02J7/0013 , H02J7/0024 , H02J7/0052 , H02J7/022 , H02J2007/0059 , H02J2007/0062
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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4.发明申请公开(公告)号：US20170222465A1
公开(公告)日：2017-08-03
申请号：US15260272
申请日：2016-09-08
Applicant: QUALCOMM Incorporated
Inventor： Steve HAWLEY , Christian SPORCK
IPC: H02J7/00
Abstract: A method for supplying power to a battery determines a first thermal budget for a first charging regulator. The method also determines a second thermal budget for a second charging regulator. The first charging regulator and the second charging regulator are coupled to the battery. The method further includes dynamically increasing a first charging regulator power output and substantially simultaneously decreasing a second charging regulator power output based on the first thermal budget and the second thermal budget.
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5.发明申请公开(公告)号：US20170222464A1
公开(公告)日：2017-08-03
申请号：US15273517
申请日：2016-09-22
Applicant: QUALCOMM Incorporated
Inventor： Stuart PULLEN , Steve HAWLEY , Thomas O'BRIEN
IPC: H02J7/00
CPC classification number: H02J7/0072 , G06F1/26 , G06F1/263 , G06F1/266 , H02J1/10 , H02J7/0052 , H02J7/0063 , H02J7/0068 , H02J7/025 , H02J2007/0059 , H02J2007/0062 , H02J2007/0067 , H02M3/1584
Abstract: A multi-phase (e.g., dual-phase) concurrent configuration of a power management component supports higher current levels to peripheral devices while maintaining acceptable thermal limits. A dual-phase integrated circuit (IC) having a first input/output (I/O) port coupled to a battery and a second I/O port coupled to an adapter and a peripheral device implements the configuration. The dual phase IC includes a dual-phase voltage regulator that selectively provide power (i) from the first I/O port to the second I/O port to provide power to the peripheral device or (ii) from the second I/O port to the first I/O port to provide power to the battery. A controller activates a boost phase to power the second I/O port in response to detecting a demand current of the peripheral device exceeds a maximum current available from the adapter.
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公开(公告)号：US20170222463A1
公开(公告)日：2017-08-03
申请号：US15270847
申请日：2016-09-20
Applicant: QUALCOMM Incorporated
Inventor： Stuart PULLEN , Steve HAWLEY , Thomas O'BRIEN
IPC: H02J7/00
CPC classification number: H02J7/0072 , H02J7/0052 , H02J7/04 , H02J7/045 , H02J2007/0059 , H02J2007/0062 , H02M1/32 , H02M3/1588 , H02M2001/0045 , H02M2001/0048 , H03K7/08 , Y02B40/90 , Y02B70/1466 , Y02B70/1491
Abstract: A battery charging implementation improves the charging time (e.g., deliver a maximum or improved charge while minimizing or reducing power loss on the mobile device) by regulating a charging device duty cycle (e.g., buck duty cycle) of a switching regulator/converter (e.g., buck regulator) to a narrow range. An input voltage of a battery charging circuit is dynamically adjusted to maintain a duty cycle within a predetermined range. A battery is then charged in accordance with an output voltage of the battery charging circuit resulting from the adjusted duty cycle.
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