Patents by Inventor Xucheng LUO
Xucheng LUO 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).
-
Patent number: 11128130Abstract: A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.Type: GrantFiled: November 22, 2019Date of Patent: September 21, 2021Assignee: Shanghai Awinic Technology Co., LTDInventors: Xucheng Luo, Jiantao Cheng, Jianwei Hu, Chuankui Wu, Yongqiang He, Yan Jiang
-
Patent number: 10811874Abstract: A load switch integrated circuit and an electronic device are provided. In a case that a surge voltage is applied to an input of the load switch integrated circuit, a surge detection circuit controls a first discharging unit to be switched on to discharge surge energy from an input of the load switch integrated circuit to the ground, and controls a first switch transistor and a second discharging unit to be switched on through a control circuit to discharge surge energy to an output of the load switch integrated circuit to the ground. Compared with a case that surge energy is discharged only by a surge protection circuit in the conventional technology, surge energy is discharged via two paths, and a circuit area is smaller than that in the conventional technology in a case that there is large surge energy to be resisted.Type: GrantFiled: November 9, 2018Date of Patent: October 20, 2020Assignee: Shanghai Awinic Technology Co., LTDInventors: Jiantao Cheng, Xucheng Luo, Jianwei Hu
-
Patent number: 10756615Abstract: A power supply conversion circuit is provided, which includes: a first voltage clamping module configured to decrease an input voltage to a preset low voltage; a boost module configured to increase the input voltage or the preset low voltage to a target voltage; a second voltage clamping module configured to maintain the target voltage within a preset voltage range; a filter module configured to filter out ripples in the target voltage; and at least one output module, each of which is configured to supply power to a load. Compared with a conventional LDO integrated circuit, the circuit can provide multiple output power supplies, and it is only required to additionally arrange one field effect transistor for one more output power supply. Therefore, the power supply conversion circuit has a simple structure, is expandable easily and is applicable to an analog integrated circuit requiring multiple output power supplies.Type: GrantFiled: November 9, 2018Date of Patent: August 25, 2020Assignee: Shanghai Awinic Technology Co., LTDInventors: Xucheng Luo, Jianwei Hu, Jiantao Cheng
-
Publication number: 20200212672Abstract: A protection circuit is provided. A control circuit receives an input voltage. In a case that the input voltage is lower than a negative threshold voltage, the control circuit outputs a first control voltage to a surge bleeder circuit through a first output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a first bleeder current. In a case that the input voltage is higher than a positive threshold voltage, the control circuit outputs a second control voltage to the surge bleeder circuit through a second output end of the control circuit, to control the surge bleeder circuit to discharge the input voltage and output a second bleeder current.Type: ApplicationFiled: November 22, 2019Publication date: July 2, 2020Applicant: Shanghai Awinic Technology Co., LTDInventors: Xucheng LUO, Jiantao CHENG, Jianwei HU, Chuankui WU, Yongqiang HE, Yan JIANG
-
Patent number: 10673315Abstract: A power supply conversion circuit is provided, which includes: a first voltage clamping module configured to decrease an input voltage to a preset low voltage; a boost module configured to increase the input voltage or the preset low voltage to a target voltage; a second voltage clamping module configured to maintain the target voltage within a preset voltage range; a filter module configured to filter out ripples in the target voltage; and at least one output module, each of which is configured to supply power to a load. Compared with a conventional LDO integrated circuit, the circuit can provide multiple output power supplies, and it is only required to additionally arrange one field effect transistor for one more output power supply. Therefore, the power supply conversion circuit has a simple structure, is expandable easily and is applicable to an analog integrated circuit requiring multiple output power supplies.Type: GrantFiled: November 9, 2018Date of Patent: June 2, 2020Assignee: Shanghai Awinic Technology Co., LTDInventors: Xucheng Luo, Jianwei Hu, Jiantao Cheng
-
Publication number: 20190199093Abstract: A load switch integrated circuit and an electronic device are provided. In a case that a surge voltage is applied to an input of the load switch integrated circuit, a surge detection circuit controls a first discharging unit to be switched on to discharge surge energy from an input of the load switch integrated circuit to the ground, and controls a first switch transistor and a second discharging unit to be switched on through a control circuit to discharge surge energy to an output of the load switch integrated circuit to the ground. Compared with a case that surge energy is discharged only by a surge protection circuit in the conventional technology, surge energy is discharged via two paths, and a circuit area is smaller than that in the conventional technology in a case that there is large surge energy to be resisted.Type: ApplicationFiled: November 9, 2018Publication date: June 27, 2019Applicant: Shanghai Awinic Technology Co., LTDInventors: Jiantao CHENG, Xucheng LUO, Jianwei HU
-
Publication number: 20190190367Abstract: A power supply conversion circuit is provided, which includes: a first voltage clamping module configured to decrease an input voltage to a preset low voltage; a boost module configured to increase the input voltage or the preset low voltage to a target voltage; a second voltage clamping module configured to maintain the target voltage within a preset voltage range; a filter module configured to filter out ripples in the target voltage; and at least one output module, each of which is configured to supply power to a load. Compared with a conventional LDO integrated circuit, the circuit can provide multiple output power supplies, and it is only required to additionally arrange one field effect transistor for one more output power supply. Therefore, the power supply conversion circuit has a simple structure, is expandable easily and is applicable to an analog integrated circuit requiring multiple output power supplies.Type: ApplicationFiled: November 9, 2018Publication date: June 20, 2019Applicant: Shanghai Awinic Technology Co., LTDInventors: Xucheng LUO, Jianwei HU, Jiantao CHENG