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公开(公告)号：US10672757B2
公开(公告)日：2020-06-02
申请号：US16518373
申请日：2019-07-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiake Wang , Yue Chen , Qiang Xie
Abstract: A multiphase parallel digital current (DC) to DC converter (DCDC) circuit includes a loop operational amplifier (EA) unit, N output-stage circuit units, and M drive units, where a drive unit corresponds to at least one output-stage circuit unit including a comparator (COMP) and a power stage circuit, an output end of the loop operational amplifier EA unit is connected to an input end of the drive unit, an output end of the drive unit is connected to an input end of a COMP in a corresponding output-stage circuit unit, and an output end of the COMP is connected to an input end of a power stage circuit in the same output-stage circuit unit, and an input end of the loop operational amplifier EA unit is connected to output ends of all the power stage circuits.
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2.发明申请公开(公告)号：US20200076445A1
公开(公告)日：2020-03-05
申请号：US16677810
申请日：2019-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yue Chen , Liang Chen , Jiake Wang
Abstract: A superposition operation circuit and a float-voltage digital-to-analog conversion circuit to superpose analog elements according to an indirect current superposition principle, where a voltage follower is implemented using a first operational amplifier such that an output end of the voltage follower is clamped to a voltage that is input to a positive-phase input end, namely, a to-be-superposed analog element. Then a current generation circuit converts a voltage signal to a current signal, a voltage drop for the current signal is generated on a first resistor coupled to an output end of the first operational amplifier, and the voltage drop is superposed on a voltage signal output by the first operational amplifier.
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Patent Agency Ranking
公开(公告)号：US11558042B2
公开(公告)日：2023-01-17
申请号：US17504368
申请日：2021-10-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yue Chen , Jiake Wang , Liang Chen
Abstract: A multi-phase signal control circuit includes: a comparator, configured to compare a triangular wave signal with a feedback control signal to output a first pulse width modulation signal, where the feedback control signal is a signal fed back by the power stage circuit; a phase switch circuit, configured to receive a phase switch signal and the first pulse width modulation signal to generate a first phase signal and a second phase signal, where the first phase signal and the second phase signal are used to control the power stage circuit to generate an output voltage signal.
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公开(公告)号：US10804923B2
公开(公告)日：2020-10-13
申请号：US16677810
申请日：2019-11-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yue Chen , Liang Chen , Jiake Wang
Abstract: A superposition operation circuit and a float-voltage digital-to-analog conversion circuit to superpose analog elements according to an indirect current superposition principle, where a voltage follower is implemented using a first operational amplifier such that an output end of the voltage follower is clamped to a voltage that is input to a positive-phase input end, namely, a to-be-superposed analog element. Then a current generation circuit converts a voltage signal to a current signal, a voltage drop for the current signal is generated on a first resistor coupled to an output end of the first operational amplifier, and the voltage drop is superposed on a voltage signal output by the first operational amplifier.
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公开(公告)号：US20240305200A1
公开(公告)日：2024-09-12
申请号：US18667335
申请日：2024-05-17
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wenlin Zhang , Yue Chen , Yi Wang , Qiang Xie
Abstract: A switching power supply circuit includes a power transistor circuit, including a plurality of power transistors coupled in series between a power supply end and a ground, where a first electrode of a first power transistor in the plurality of power transistors is coupled to the power supply end by using a second power transistor in the plurality of power transistors, and a second electrode of the first power transistor is coupled to the ground by using a third power transistor in the plurality of power transistors; a drive circuit, configured to drive the second power transistor and the third power transistor; and a first transistor, where both a gate and a first electrode of the first transistor are coupled to a gate of the third power transistor, and a second electrode of the first transistor is coupled to the ground by using a first switch.
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公开(公告)号：US20220038082A1
公开(公告)日：2022-02-03
申请号：US17504368
申请日：2021-10-18
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Yue Chen , Jiake Wang , Liang Chen
Abstract: A multi-phase signal control circuit includes: a comparator, configured to compare a triangular wave signal with a feedback control signal to output a first pulse width modulation signal, where the feedback control signal is a signal fed back by the power stage circuit; a phase switch circuit, configured to receive a phase switch signal and the first pulse width modulation signal to generate a first phase signal and a second phase signal, where the first phase signal and the second phase signal are used to control the power stage circuit to generate an output voltage signal.
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7.发明授权公开(公告)号：US11063517B2
公开(公告)日：2021-07-13
申请号：US16750999
申请日：2020-01-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yujian Lin , Haitao Chen , Yue Chen , Zhiqiang Xiang
Abstract: A power supply circuit is disclosed. The circuit includes n capacitors, m power branches, and a control chip, where the m power branches include at least one first-type power branch and at least one second-type power branch, the first-type power branch includes a pre-boost topology structure and an open-loop topology structure connected in series to the pre-boost topology structure, the pre-boost topology structure is connected to the control chip, the pre-boost topology structure includes a straight-through state and a closed-loop state, and the control chip is configured to control, based on an output voltage of the power source, the pre-boost topology structure to switch between the straight-through state and the closed-loop state, so that the pre-boost topology structure pre-adjusts the output voltage of the power source and outputs a voltage range that meets a requirement of the open-loop topology structure.
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