Patents by Inventor Wei-Chuan Wu

Wei-Chuan Wu 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: 20250079984
    Abstract: A conversion control circuit controls plural stackable sub-converters which are coupled in parallel to generate an output power to a load. The conversion control circuit includes a current sharing terminal and a current sharing circuit. A current sharing signal is connected, in parallel, to the current sharing terminals. The current sharing circuit includes: configuration (1): the current sharing signal is generated only according to an inductor current corresponding to one of plural inductors of the plural stackable sub-converters; or configuration (2): the current sharing signal is generated according to plural inductor currents corresponding to plural inductors of plural activated phases of the plural stackable sub-converters, wherein a ratio of a portion of the current sharing signal generated by a master control circuit to a portion generated by one of the slave control circuits is k which relates to a difference between a total phase number and an activated phase number.
    Type: Application
    Filed: December 13, 2023
    Publication date: March 6, 2025
    Inventors: Wei-Chuan Wu, Chih-Hao Yang, Li-Wen Fang, Ting-Jung Tai
  • Patent number: 12027966
    Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.
    Type: Grant
    Filed: August 21, 2022
    Date of Patent: July 2, 2024
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Ta-Yung Yang, Wei-Chuan Wu, Chih-Hao Yang, Ping-Ching Huang, Li-Wen Fang
  • Publication number: 20230238875
    Abstract: A control circuit for controlling a stackable multiphase power converter includes: a synchronization terminal; a synchronization signal connected to the synchronization terminals of a plurality of the control circuits in parallel, wherein the synchronization signal includes a plurality of pulses to be successively counted as a count number; and a reset signal, configured to reset and initiate the count number; wherein the control circuit further comprises a phase-sequence number, wherein the control circuit enables a corresponding power stage circuit to generate a phase of the output power when the count number reaches the phase-sequence number.
    Type: Application
    Filed: August 21, 2022
    Publication date: July 27, 2023
    Inventors: Ta-Yung Yang, Wei-Chuan Wu, Chih-Hao Yang, Ping-Ching Huang, Li-Wen Fang
  • Publication number: 20210286150
    Abstract: An optical system having a secondary mirror refocusing mechanism includes a primary mirror; a secondary mirror arranged corresponding to the primary mirror, and the secondary mirror is smaller than the primary mirror; a mirror base for receiving the secondary mirror; a beam having a first end and a second end disposed opposite to each other; and an actuation mechanism including a thermal deformation structure and a heating device, the heating device provides thermal energy to the thermal deformation structure such that the thermal deformation structure generates a deformation; wherein, the first end of the beam is fixed to the mirror base, the second end of the beam is fixed to the actuation mechanism, and the beam and the actuation mechanism are deformed correspondingly. With the above structure, the secondary mirror can be refocused to ensure the imaging quality of the optical system.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Applicant: National Applied Research Laboratories
    Inventors: Wei-Chuan Wu, Jen-Chueh Kuo
  • Patent number: 10389249
    Abstract: A switching regulator having adjustable inductor current threshold employs a control method which includes: (S1) determining whether an output voltage is greater than a reference voltage or determining whether a switching frequency of the power stage is smaller than a predetermined lower frequency limit, and (S2) when it is determined yes in the step (S1), adjusting the inductor current threshold, such that the switching regulator operates under a pseudo discontinuous conduction mode (PDCM) wherein the switching frequency is not smaller than the predetermined lower frequency limit. Consequently, when the switching regulator operates under a light load mode, an optimum balance between a total power consumption and switching noise interference will be ensured.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: August 20, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Hong-Wei Huang, Yu-Kai Lin, Wei-Chuan Wu
  • Publication number: 20190006946
    Abstract: A switching regulator having adjustable inductor current threshold employs a control method which includes: (S1) determining whether an output voltage is greater than a reference voltage or determining whether a switching frequency of the power stage is smaller than a predetermined lower frequency limit, and (S2) when it is determined yes in the step (S1), adjusting the inductor current threshold, such that the switching regulator operates under a pseudo discontinuous conduction mode (PDCM) wherein the switching frequency is not smaller than the predetermined lower frequency limit. Consequently, when the switching regulator operates under a light load mode, an optimum balance between a total power consumption and switching noise interference will be ensured.
    Type: Application
    Filed: June 15, 2018
    Publication date: January 3, 2019
    Inventors: Hong-Wei Huang, Yu-Kai Lin, Wei-Chuan Wu
  • Publication number: 20130069614
    Abstract: The present invention discloses a power supply circuit with adaptively enabled charge pump. The power supply circuit includes: a buck switching regulator switching at least one power switch therein to convert an input voltage to a middle voltage according to a control signal; a charge pump coupled to the buck switching regulator, wherein when the charge pump is enabled, the charge pump boosts the middle voltage to provide an output voltage higher than the middle voltage, and when the charge pump is disabled, the middle voltage is supplied as the output voltage; and a controller generating the control signal to control the switching regulator, and determining to enable or disable the charge pump according to a level of the input voltage.
    Type: Application
    Filed: May 8, 2012
    Publication date: March 21, 2013
    Inventors: Chung-Hsien Tso, Wei-Hsin Wei, Kuo-Chen Tsai, Shui-Mu Lin, Yu-Chia Hsu, Wei-Chuan Wu