公开(公告)号：US20190190284A1

公开(公告)日：2019-06-20

申请号：US15844471

申请日：2017-12-15

Applicant: Qualcomm Incorporated

Inventor： Giuseppe Pinto ,  Chunping Song ,  Zhaohui Zhu ,  Christian Gregory Sporck

IPC: H02J7/00 ,  H02M3/07

CPC classification number: H02J7/0029 ,  H02J7/0052 ,  H02J2007/0039 ,  H02J2007/0059 ,  H02J2007/0062 ,  H02M3/07

Abstract: An apparatus is disclosed for open-loop limiting of a charging phase pulsewidth. An example apparatus includes an input node, an output node coupled to a battery, a flying capacitor coupled to the output node, a driver circuit, a charging circuit, and an open-loop charging phase pulsewidth limiter coupled to the driver circuit and the charging circuit. The driver circuit generates a charging phase signal based on a clock signal. Using at least one switch that is coupled between the input node and the flying capacitor, the charging circuit connects or disconnects the flying capacitor to or from the input node based on the charging phase signal. The open-loop charging phase pulsewidth limiter monitors for at least one limit event associated with charging the battery with the flying capacitor. Responsive to detection of the limit event, the open-loop charging phase pulsewidth limiter limits a pulsewidth of the charging phase signal.

公开(公告)号：US20180341309A1

公开(公告)日：2018-11-29

申请号：US15649939

申请日：2017-07-14

Applicant: QUALCOMM Incorporated

Inventor： Christian Gregory Sporck ,  Georgios Konstantinos Paparrizos ,  Chunping Song

IPC: G06F1/26 ,  G06F13/38 ,  G06F13/40 ,  G06F13/42

Abstract: A Universal Serial Bus (USB) Type-C and power delivery port with scalable power architecture is disclosed. In one aspect, at least two circuits for a USB port are consolidated into a single integrated circuit (IC). At least one of the at least two circuits is part of a Type-C port controller (TCPC) group of circuits including sensors associated with detecting whether a voltage and current are present at pins of a USB receptacle. At least the other one of the at least two circuits is selected from a battery-related group of circuits including a battery charging circuit, an over-voltage protection circuit, and a conditioning circuit. The more circuitry integrated into the single IC the more readily scalable the end product is for a multi-port device. Additional circuitry such as a light emitting diode (LED) driver may also be included in the single IC.

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

IPC: G05F1/575 ,  H02M3/156 ,  H02M3/158 ,  H02M1/42 ,  H02M3/335

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.