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公开(公告)号：US11831241B2
公开(公告)日：2023-11-28
申请号：US17363948
申请日：2021-06-30
Applicant: QUALCOMM Incorporated
Inventor： Sanghwa Jung , Chunping Song , Ta-Tung Yen , Yue Jing
CPC classification number: H02M3/1582 , H02M3/07
Abstract: A three-level buck converter circuit configurable to transition between a three-level buck converter mode and a two-level buck converter mode and methods for regulating power using such a circuit. One example power supply circuit generally includes a three-level buck converter circuit and a control circuit coupled to the three-level buck converter circuit and configured to control operation of the three-level buck converter circuit between a three-level buck converter mode and a two-level buck converter mode. The three-level buck converter circuit generally includes a first switch, a second switch coupled to the first switch via a first node, a third switch coupled to the second switch via a second node, a fourth switch coupled to the third switch via a third node, a first capacitive element coupled between the first node and the third node, and an inductive element coupled between the second node and an output node.
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12.发明申请公开(公告)号：US20210382535A1
公开(公告)日：2021-12-09
申请号：US17445324
申请日：2021-08-18
Applicant: QUALCOMM Incorporated
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.
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13.发明授权公开(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：US10270342B2
公开(公告)日：2019-04-23
申请号：US15973787
申请日：2018-05-08
Applicant: QUALCOMM Incorporated
Inventor： Stuart Pullen , Michael Bui , Chunping Song , Jialei Xu
Abstract: Certain aspects of the present disclosure provide methods and apparatus for current sensing and error correction, or at least adjustment, for a switching regulator. One example current-sensing circuit generally includes a first amplifier, a buffer, a low-pass filter, a first switch coupled between an output of the first amplifier and an input of the buffer, a second switch coupled between the output of the first amplifier and an input of the low-pass filter, a third switch coupled between an output of the buffer and the input of the low-pass filter, and a fourth switch coupled between the input of the low-pass filter and a reference node for the circuit.
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公开(公告)号：US11606032B2
公开(公告)日：2023-03-14
申请号：US16683913
申请日：2019-11-14
Applicant: QUALCOMM Incorporated
Inventor： Chunping Song , Jiwei Chen , David King Wai Li
Abstract: Certain aspects of the present disclosure generally relate to an adaptive combination power supply circuit. The adaptive combination power supply circuit may be capable of switching between performing as a three-level buck converter and as a divide-by-two charge pump. One example power supply circuit generally includes a first transistor; a second transistor coupled to the first transistor via a first node; a third transistor coupled to the second transistor via a second node; a fourth transistor coupled to the third transistor via a third node; a capacitive element having a first terminal coupled to the first node and a second terminal coupled to the third node; an inductive element having a first terminal coupled to the second node; and a switch having a first terminal coupled to the first terminal of the inductive element, the switch having a second terminal coupled to a second terminal of the inductive element.
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Patent Agency Ranking
16.发明授权公开(公告)号：US11502599B2
公开(公告)日：2022-11-15
申请号：US17021614
申请日：2020-09-15
Applicant: QUALCOMM Incorporated
Inventor： Ta-Tung Yen , Chunping Song , Guoyong Guo , Hector Ivan Oporta , Ahmed Abdelmoaty
Abstract: Techniques and apparatus for supplying power to gate drivers of a switched-mode power supply (SMPS) circuit. One example power supply circuit generally includes a SMPS circuit having a first input voltage node and a second input voltage node, and a charge pump. The charge pump generally includes a first capacitive element having a first terminal and a second terminal; a first switch coupled between a first input node of the charge pump and the first terminal of the first capacitive element; a second switch coupled between the second terminal of the first capacitive element and a second input node of the charge pump; a third switch coupled between the first terminal of the first capacitive element and the first input voltage node of the SMPS circuit; and a fourth switch coupled between the second terminal of the first capacitive element and the second input voltage node of the SMPS circuit.
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公开(公告)号：US20210376719A1
公开(公告)日：2021-12-02
申请号：US17334642
申请日：2021-05-28
Applicant: Qualcomm Incorporated
Inventor： Stuart Pullen , Jialei Xu , Chunping Song , Ta-Tung Yen
Abstract: An apparatus is disclosed for operating a charge pump in a high-efficiency low-ripple burst mode. In an example aspect, the apparatus includes a charge pump with a flying capacitor, a switching circuit, and a burst-mode controller. The switching circuit is coupled to the flying capacitor and configured to selectively: be in a burst configuration to charge and discharge the flying capacitor based on a clock signal; or be in a pulse-skipping configuration. The burst-mode controller is coupled to the switching circuit and configured to trigger the switching circuit to transition from the pulse-skipping configuration to the burst configuration at a time that occurs between rising edges of the clock signal. The burst-mode controller is also configured to cause charging of the flying capacitor to occur for approximately half a period of the clock signal responsive to triggering the switching circuit to transition from the pulse-skipping configuration to the burst configuration.
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18.发明授权公开(公告)号：US11112844B2
公开(公告)日：2021-09-07
申请号：US15649939
申请日：2017-07-14
Applicant: QUALCOMM Incorporated
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.
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公开(公告)号：US10756614B2
公开(公告)日：2020-08-25
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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公开(公告)号：US10734891B2
公开(公告)日：2020-08-04
申请号：US16001073
申请日：2018-06-06
Applicant: QUALCOMM Incorporated
Inventor： Hector Ivan Oporta , Zhaohui Zhu , Chunping Song , William Rader
Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for powering up a charge pump converter and providing protection and soft-start circuitry therefor. One example charge pump converter generally includes a first transistor and a second transistor coupled in series between an input voltage node and an output voltage node of the charge pump converter, a first capacitive element having a first terminal coupled to a node between the first and second transistors, and a first switch coupled to the input voltage node, the first switch being configured to selectively enable a first drive circuit having an output coupled to a control terminal of the second transistor.
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