Patents by Inventor Jiake Wang
Jiake Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11558042Abstract: 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.Type: GrantFiled: October 18, 2021Date of Patent: January 17, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yue Chen, Jiake Wang, Liang Chen
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Publication number: 20220038082Abstract: 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.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Applicant: HUAWEI TECHNOLOGIES CO.,LTD.Inventors: Yue Chen, Jiake Wang, Liang Chen
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Patent number: 10804923Abstract: 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.Type: GrantFiled: November 8, 2019Date of Patent: October 13, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTDInventors: Yue Chen, Liang Chen, Jiake Wang
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Patent number: 10802522Abstract: An output voltage regulation apparatus includes a voltage regulation circuit, a control circuit, a power stage circuit, a filtering network, and a feedback network. The feedback network is configured to output a feedback voltage to a feedback voltage node of the control circuit. The voltage regulation circuit is configured to regulate the feedback voltage. The control circuit is configured to switch on or off power transistors in the power stage circuit. The filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.Type: GrantFiled: June 13, 2019Date of Patent: October 13, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jiake Wang, Liang Chen, Peng Zou
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Patent number: 10680519Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.Type: GrantFiled: November 7, 2018Date of Patent: June 9, 2020Assignee: Huawei Technologies Co., Ltd.Inventors: Jiake Wang, Liang Chen
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Patent number: 10672757Abstract: 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.Type: GrantFiled: July 22, 2019Date of Patent: June 2, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Jiake Wang, Yue Chen, Qiang Xie
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Publication number: 20200076445Abstract: 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.Type: ApplicationFiled: November 8, 2019Publication date: March 5, 2020Inventors: Yue Chen, Liang Chen, Jiake Wang
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Publication number: 20190348408Abstract: 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.Type: ApplicationFiled: July 22, 2019Publication date: November 14, 2019Inventors: Jiake Wang, Yue Chen, Qiang Xie
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Publication number: 20190294191Abstract: An output voltage regulation apparatus includes a voltage regulation circuit, a control circuit, a power stage circuit, a filtering network, and a feedback network. The feedback network is configured to output a feedback voltage to a feedback voltage node of the control circuit. The voltage regulation circuit is configured to regulate the feedback voltage. The control circuit is configured to switch on or off power transistors in the power stage circuit. The filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.Type: ApplicationFiled: June 13, 2019Publication date: September 26, 2019Inventors: Jiake Wang, Liang Chen, Peng Zou
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Publication number: 20190074767Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.Type: ApplicationFiled: November 7, 2018Publication date: March 7, 2019Inventors: Jiake WANG, Liang CHEN
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Patent number: 10148182Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.Type: GrantFiled: October 16, 2017Date of Patent: December 4, 2018Assignee: Huawei Technologies Co., Ltd.Inventors: Jiake Wang, Liang Chen
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Publication number: 20180041124Abstract: The present disclosure discloses a voltage conversion circuit, including: a first power transistor; a second power transistor, where the second power transistor is cut off when the first power transistor is conductive and is conductive when the first power transistor is cut off; a first energy storage element; a second energy storage element, a bleed module, configured to be coupled to the first power transistor, where when the first power transistor is cut off and a voltage of a source of the first power transistor reaches a source threshold, provide a current path for a current flowing from the source of the first power transistor to the ground. By means of the foregoing, a voltage difference between a drain and the source of the first power transistor can be decreased, thereby reducing a risk of burning out the first power transistor, and avoiding an increase in manufacturing costs.Type: ApplicationFiled: October 16, 2017Publication date: February 8, 2018Inventors: Jiake Wang, Liang Chen
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Publication number: 20160286044Abstract: A terminal and a recording method of the terminal are presented. The terminal includes one or more processors and a memory storing computer readable program, where the one or more processors is configured to monitor call trigger event, and when the call trigger event is detected, trigger the call unit to switch a terminal status; control switching of the terminal status; and initiate a recording operation to start recording of the current call when the terminal status controlled by the call unit is switched to the calling state related to the call trigger event. If a call is performed with the terminal and recording is needed, a recording operation is automatically initiated according to a one-off event trigger and monitoring of the terminal status, which simplifies steps of the recording operation of the terminal, improves usability of the terminal, and achieves a one-click effect of recording and calling.Type: ApplicationFiled: June 3, 2016Publication date: September 29, 2016Inventors: Jiake Wang, Mingyu Zhang