Patents by Inventor Chenghao Sun

Chenghao Sun 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).

  • Publication number: 20250096690
    Abstract: This application provides a control circuit, a power supply module, and an electronic device. The power supply module includes a rectifier circuit and an asymmetric half-bridge flyback converter circuit which includes a main power transistor, an auxiliary power transistor, and a transformer. The control circuit controls the main power transistor and the auxiliary power transistor to be alternately turned on and off, so that the asymmetric half-bridge flyback converter circuit supplies power to a load. The control circuit is configured to: control the rectifier circuit to discharge to the transformer within preset duration; and after the rectifier circuit stops discharging to the transformer, control the main power transistor to be turned on based on a comparison result of a preset voltage value and voltage difference between a drain and a source of the main power transistor. This application reduce switching loss of the main power transistor.
    Type: Application
    Filed: November 25, 2024
    Publication date: March 20, 2025
    Inventors: Chenghao SUN, Liang WU, Baolei DAI, Zhiqiang GUO
  • Publication number: 20250088114
    Abstract: This application provides a control circuit of a power supply module, and an electronic device. In one example, the power supply module includes a rectifier circuit and an active clamp flyback converter circuit which includes a main power transistor, an auxiliary power transistor, and a transformer. The control circuit is configured to: control the active clamp flyback converter circuit to operate in a discontinuous conduction mode, and control the rectifier circuit to discharge to the transformer within preset duration after the auxiliary power transistor is turned off and before the main power transistor is turned on; and after the rectifier circuit stops discharging to the transformer, control the main power transistor to be turned on based on a comparison result of a voltage difference between a drain and a source of the main power transistor and a preset voltage value.
    Type: Application
    Filed: November 26, 2024
    Publication date: March 13, 2025
    Inventors: Chenghao SUN, Liang WU, Baolei DAI, Zhiqiang GUO
  • Publication number: 20250050318
    Abstract: The present invention relates to a rhodium-free TWC catalytic article, which comprises a catalyst composition coat on a substrate, wherein the catalyst composition coat comprises, —a first region comprising i). a top layer comprising a first platinum component and a first palladium component, each being present in supported form, and ii). a bottom layer comprising a second platinum component in supported form, and—optionally, a second region located downstream of the first region, and comprising iii). a top layer comprising a third platinum component in supported form, and iv). a bottom layer comprising a fourth platinum component in supported form. The present invention relates to an exhaust treatment system comprising the rhodium-free TWC catalytic article.
    Type: Application
    Filed: December 26, 2022
    Publication date: February 13, 2025
    Inventors: Chenghao SUN, Xiaoshuang YANG, Chengwei SONG, Shau Lin CHEN, Gianluca VOLANTE, Xiaolai ZHENG, Markus KINNE
  • Publication number: 20240258008
    Abstract: A common mode choke includes a toroidal magnetic core and N windings wound on the toroidal magnetic core. The N windings are rotationally symmetric in a central direction of the toroidal magnetic core. Each of the N windings includes two lead ends which are respectively located at outermost layers of two sides of each winding. Each of the N windings includes a first group of windings and a second group of windings. A starting point of each of the N windings is located between the first group of windings and the second group of windings. A quantity of winding sections in the first group of windings is different from a quantity of winding sections in the second group of windings. Each winding section in both the first group of windings and the second group of windings includes a plurality of winding layers. Each winding layer includes a plurality of coils.
    Type: Application
    Filed: April 15, 2024
    Publication date: August 1, 2024
    Applicant: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Chenghao Sun, Huasheng Liu, Weiyang Zhao
  • Publication number: 20240030815
    Abstract: A control circuit for a switch-mode power supply, a power circuit, and an electronic device. The control circuit outputs a control signal to control a switching frequency of the switch-mode power supply. The control circuit adjusts, in a plurality of cycles, a frequency of the control signal based on a plurality of ranges, and controls, in each cycle, the frequency of the control signal to change with time in a range corresponding to each cycle. In the embodiments, a frequency-domain energy dispersion degree of the control signal output by the control circuit can be increased, electromagnetic interference generated by the control signal output by the control circuit is reduced, and finally, it is ensured that the power circuit and the electronic device including the power circuit can pass a related security test.
    Type: Application
    Filed: July 11, 2023
    Publication date: January 25, 2024
    Applicant: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Chenghao SUN, Baolei DAI, Bo WANG, Zhiqiang GUO
  • Patent number: 11632055
    Abstract: An Active Clamp Flyback (ACF) converter includes a transformer module, a clamping module, and a controller. The controller is configured to: after the transformer module starts secondary side discharging, control the clamping module to start receiving leakage inductance power from the transformer module; and after controlling the clamping module to stop receiving the leakage inductance power from the transformer module, control the clamping module to release the leakage inductance power to the transformer module. The leakage inductance power released by the clamping module to the transformer module is used by the transformer module to restore a soft switching state based on the leakage inductance power. In a process of transferring the leakage inductance power to a clamping capacitor, the clamping module is in an enabled state. This reduces a loss caused by the clamping module to the leakage inductance power, and helps reduce overall loss caused by the ACF converter.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: April 18, 2023
    Assignee: Huawei Digital Power Technologies Co., Ltd.
    Inventors: Qinglei Wang, Qinghui Hou, Chenghao Sun, Wei Liu
  • Publication number: 20230013471
    Abstract: Embodiments of this application provide charging apparatuses, charging apparatus control methods, and charging systems, and relate to the field of terminal device charging technologies. The charging apparatus includes a rectifier circuit, a transformer, a lower bridge switch, a clamp capacitor, an upper bridge switch, and a controller. The transformer includes a primary coil and at least one secondary coil. The controller is configured to control the upper bridge switch and the lower bridge switch to be alternatively turned on. The controller is further configured to obtain a sampling waveform at a location at which the controller is electrically connected to the transformer when the lower bridge switch is turned off, and, when the sampling waveform is abnormal, turn off the lower bridge switch in a first phase of a next charging cycle. The sampling waveform includes a voltage waveform of the primary coil or a voltage waveform of the secondary coil.
    Type: Application
    Filed: September 28, 2022
    Publication date: January 19, 2023
    Inventors: Chenghao SUN, Chengyong LIU, Jie REN, Xue ZHANG
  • Patent number: 11522527
    Abstract: This application discloses a chip and a signal level shifter circuit for use on a mobile terminal such as a charger or an adapter. The chip is co-packaged with a first silicon-based driver die and a second silicon-based driver die that are manufactured by using a BCD technology, and a first gallium nitride die and a second gallium nitride die that are manufactured by using a gallium nitride technology. A first silicon-based circuit is integrated on the first silicon-based driver die, a second silicon-based circuit is integrated on the second silicon-based driver die, and a high-voltage resistant gallium nitride circuit is integrated on the first gallium nitride die. In this way, it can be ensured that a second low-voltage silicon-based driver die manufactured by using a low-voltage BCD technology is not damaged by a high input voltage, thereby reducing costs of the chip.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: December 6, 2022
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Qimeng Jiang, Xingqiang Peng, Chenghao Sun
  • Patent number: 11233766
    Abstract: Embodiments of the disclosure provide a data transmission method. The method can include receiving a first packet sent by a virtual private network user, wherein the first packet carries a first destination address that does not belong to an address range that has been configured for a virtual private network where the virtual private network user is located, converting the first destination address to a second destination address, generating a second packet according to the second destination address and the first packet, and sending the second packet outside the virtual private network where the virtual private network user is located.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: January 25, 2022
    Assignee: ALIBABA GROUP HOLDING LIMITED
    Inventors: Han Xiao, Chenghao Sun, Jun Liang
  • Publication number: 20210409005
    Abstract: This application discloses a chip and a signal level shifter circuit for use on a mobile terminal such as a charger or an adapter. The chip is co-packaged with a first silicon-based driver die and a second silicon-based driver die that are manufactured by using a BCD technology, and a first gallium nitride die and a second gallium nitride die that are manufactured by using a gallium nitride technology. A first silicon-based circuit is integrated on the first silicon-based driver die, a second silicon-based circuit is integrated on the second silicon-based driver die, and a high-voltage resistant gallium nitride circuit is integrated on the first gallium nitride die. In this way, it can be ensured that a second low-voltage silicon-based driver die manufactured by using a low-voltage BCD technology is not damaged by a high input voltage, thereby reducing costs of the chip.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 30, 2021
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Qimeng Jiang, Xingqiang Peng, Chenghao Sun
  • Publication number: 20210328520
    Abstract: An Active Clamp Flyback (ACF) converter includes a transformer module, a clamping module, and a controller. The controller is configured to: after the transformer module starts secondary side discharging, control the clamping module to start receiving leakage inductance power from the transformer module; and after controlling the clamping module to stop receiving the leakage inductance power from the transformer module, control the clamping module to release the leakage inductance power to the transformer module. The leakage inductance power released by the clamping module to the transformer module is used by the transformer module to restore a soft switching state based on the leakage inductance power. In a process of transferring the leakage inductance power to a clamping capacitor, the clamping module is in an enabled state. This reduces a loss caused by the clamping module to the leakage inductance power, and helps reduce overall loss caused by the ACF converter.
    Type: Application
    Filed: June 25, 2021
    Publication date: October 21, 2021
    Inventors: Qinglei WANG, Qinghui HOU, Chenghao SUN, Wei LIU
  • Patent number: 10467988
    Abstract: An automation component includes a display having addressable locations in an array for display of data, and control circuitry that is configured to control the display. In a first mode, the control circuitry controls illumination of one or more individual locations of the display in the array for conveying individual data corresponding to the individual locations. In a second mode, the control circuitry controls illumination of two or more individual locations in the array to display an amalgamated alphanumeric character.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: November 5, 2019
    Assignee: Rockwell Automation Asia Pacific Business Center Pte. Ltd.
    Inventors: Rajiv Shyamalendu Chakraborty, Hon chung Chai, Kan Yen Cheong, Kevin Huan Hong Lee, Thomas Kazushige Sugimoto, Chenghao Sun, Bing Yan
  • Publication number: 20190222552
    Abstract: Embodiments of the disclosure provide a data transmission method. The method can include receiving a first packet sent by a virtual private network user, wherein the first packet carries a first destination address that does not belong to an address range that has been configured for a virtual private network where the virtual private network user is located, converting the first destination address to a second destination address, generating a second packet according to the second destination address and the first packet, and sending the second packet outside the virtual private network where the virtual private network user is located.
    Type: Application
    Filed: March 25, 2019
    Publication date: July 18, 2019
    Inventors: Han XIAO, Chenghao SUN, Jun LIANG
  • Publication number: 20180241624
    Abstract: A method and an apparatus of generating rule tables for a virtual dedicated network, and a routing method are disclosed. The method includes determining virtual switches which act as switching nodes in a virtual dedicated network based on topological structure information of the virtual dedicated network; and using network identifiers of the virtual switches as keywords to configure and generate rule tables of the virtual dedicated network, the rule tables including at least the keywords which act as addresses of the switching nodes in the rule tables. The embodiments of the present disclosure can greatly reduce the number of table items in a rule table in a virtual dedicated network, and reduce the number of table items of transfer nodes and an amount of data of management and control nodes, thus effectively improving the system performance.
    Type: Application
    Filed: February 20, 2018
    Publication date: August 23, 2018
    Inventors: Chenghao Sun, Biao Lyu, Baochun Liu, Lilong Deng, Han Xiao
  • Publication number: 20160247486
    Abstract: An automation component includes a display having addressable locations in an array for display of data, and control circuitry that is configured to control the display. In a first mode, the control circuitry controls illumination of one or more individual locations of the display in the array for conveying individual data corresponding to the individual locations. In a second mode, the control circuitry controls illumination of two or more individual locations in the array to display an amalgamated alphanumeric character.
    Type: Application
    Filed: February 25, 2015
    Publication date: August 25, 2016
    Inventors: Rajiv Shyamalendu Chakraborty, Hon Chung Chai, Kan Yen Cheong, Kevin Huan Hong Lee, Thomas Kazushige Sugimoto, Chenghao Sun, Bing Yan