Patents by Inventor Zhongwang Yang

Zhongwang Yang 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: 12009138
    Abstract: A magnetic device includes a magnetic core assembly, a first secondary winding, a second secondary winding and a primary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The first to third magnetic legs are arranged in sequence. The second magnetic leg is disposed between the first magnetic leg and the third magnetic leg. The first secondary winding is disposed between the first magnetic leg and the second magnetic leg, and the second secondary winding is disposed between the second magnetic leg and the third magnetic leg. A first terminal of the primary winding is disposed between the first magnetic leg and the second magnetic leg, and a second terminal of the primary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: June 11, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Patent number: 11996780
    Abstract: The present disclosure provides a power conversion circuit including positive and negative input terminals, a clamping branch circuit, a first primary switch, a transformer, a rectifier circuit, a resonant inductor, a resonant capacitor, and positive and negative output terminals. The clamping branch circuit includes a clamping capacitor and a second primary switch serially connected between the first and second terminals thereof. The first terminal is coupled to the positive input terminal. The first primary switch is connected between the second terminal and the negative input terminal. The primary winding of the transformer is connected to the clamping branch circuit in parallel. The rectifier circuit includes first and second bridge arms connected in parallel. Connection terminals in the first and second bridge arms are coupled to two terminals of the secondary winding of the transformer correspondingly. The first and second bridge arms are coupled between the positive and negative output terminals.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: May 28, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Zhongwang Yang, Qi Xia
  • Publication number: 20240171066
    Abstract: A deadtime regulation device and a converter having the same are provided. The converter further includes a first switch, the deadtime regulation device includes a communication bus, an integrated circuit and a controller, and the integrated circuit includes a second switch, a sampling processing circuit and a bus control circuit. The control signals of the first and second switches are complementary, and the control signal of the second switch has a dead time. The sampling processing circuit is for sampling the voltage on the second switch to obtain a duration of the dead time and generating the digital signal accordingly. The controller receives the digital signal from the bus control circuit through the communication bus and adjusts the duration of the dead time according to the received digital signal. The controller performs alignment of the communication timing sequence of the communication bus before transmitting the digital signal.
    Type: Application
    Filed: October 13, 2023
    Publication date: May 23, 2024
    Inventors: Zhongwang Yang, Xueliang Chang, Mingjie Shan
  • Publication number: 20240171067
    Abstract: An integrated circuit and a converter having the same are provided. The converter further includes a first switch, and the integrated circuit includes a second switch and a sampling processing circuit. The control signals of the first and second switches are complementary, and the control signal of the second switch has a dead time. The sampling processing circuit is for sampling the voltage on the second switch to obtain a duration of the dead time and generating the digital signal according to the duration of the dead time. The digital signal is used to adjust the duration of the dead time.
    Type: Application
    Filed: October 12, 2023
    Publication date: May 23, 2024
    Inventors: Zhongwang Yang, Xueliang Chang, Mingjie Shan
  • Patent number: 11894777
    Abstract: A power conversion circuit includes a first terminal, a second terminal, a first switching conversion unit, a second switching conversion unit, a flying capacitor and a magnetic element. The first switching conversion unit includes a first switch and a third switch. The second switching conversion unit includes a second switch and a fourth switch. The magnetic element includes two first windings and a second winding. A first one of the two first windings is serially connected between the flying capacitor and the second terminal. A second one of the two first windings is serially connected between the second switch and the second terminal. The second winding is serially connected with the flying capacitor and the first one of the two first windings. A turn ratio between the second winding, the first one of the two first windings and the second one of the two first windings is N:1:1.
    Type: Grant
    Filed: March 17, 2023
    Date of Patent: February 6, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yahong Xiong, Qinghua Su, Zhongwang Yang
  • Patent number: 11824457
    Abstract: A power conversion module is disclosed. The power conversion module includes a power conversion module includes a circuit board and a first basic power unit. The first basic power unit is disposed on the circuit board and includes a magnetic device, a primary switch circuit, a first secondary rectifying circuit and a first positive output terminal pin. The primary switch circuit, the first secondary rectifying circuit, the magnetic device and the first positive output terminal pin are sequentially arranged on the circuit board along a first direction.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: November 21, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yang Leng, Litao Qian, Zhongwang Yang
  • Publication number: 20230223832
    Abstract: A power conversion circuit includes a first terminal, a second terminal, a first switching conversion unit, a second switching conversion unit, a flying capacitor and a magnetic element. The first switching conversion unit includes a first switch and a third switch. The second switching conversion unit includes a second switch and a fourth switch. The magnetic element includes two first windings and a second winding. A first one of the two first windings is serially connected between the flying capacitor and the second terminal. A second one of the two first windings is serially connected between the second switch and the second terminal. The second winding is serially connected with the flying capacitor and the first one of the two first windings. A turn ratio between the second winding, the first one of the two first windings and the second one of the two first windings is N:1:1.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 13, 2023
    Inventors: Da Jin, Yahong Xiong, Qinghua Su, Zhongwang Yang
  • Publication number: 20230223186
    Abstract: A magnetic device includes a magnetic core assembly and a winding assembly. The magnetic core assembly includes a first outer magnetic leg, a second outer magnetic leg, a first inner magnetic leg group and a second inner magnetic leg group. A first channel is formed between the first inner magnetic leg group and the first outer magnetic leg. A second channel is formed between the second inner magnetic leg group and the first inner magnetic leg group. A third channel is formed between the second inner magnetic leg group and the second outer magnetic leg. The winding assembly includes four coupled windings. The first terminals of the four coupled windings are located near a first lateral side of the magnetic core assembly. The second terminals of the four coupled windings are located near a second lateral side of the magnetic core assembly.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 13, 2023
    Inventors: Da Jin, Yahong Xiong, Yang Leng, Yankai Liu, Zhongwang Yang
  • Patent number: 11646668
    Abstract: A power converter includes N power conversion units. Each power conversion unit includes a main switching circuit, a transformer, a synchronous rectifier circuit, an input signal terminal and a signal processor. A primary winding of the transformer is connected with the main switching circuit. The synchronous rectifier circuit is connected with a secondary winding of the transformer. The input signal terminal receives a first PWM control signal. The signal processor generates first and second PWM driving signals to drive the main switching circuit according to the first PWM control signal, and a phase difference between the first and second PWM driving signals is (180±?) degree. The signal processor generates third and fourth PWM driving signals to drive the synchronous rectifier circuit according to the first PWM control signal, and a phase difference between the third and fourth PWM driving signals is (180±?) degree.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: May 9, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yahong Xiong, Yang Leng, Junguo Cui, Zhongwang Yang
  • Publication number: 20230075167
    Abstract: A magnetic device includes a magnetic core assembly, a first secondary winding, a second secondary winding and a primary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The first to third magnetic legs are arranged in sequence. The second magnetic leg is disposed between the first magnetic leg and the third magnetic leg. The first secondary winding is disposed between the first magnetic leg and the second magnetic leg, and the second secondary winding is disposed between the second magnetic leg and the third magnetic leg. A first terminal of the primary winding is disposed between the first magnetic leg and the second magnetic leg, and a second terminal of the primary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 9, 2023
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Publication number: 20230006560
    Abstract: The present disclosure provides a power conversion circuit including positive and negative input terminals, a clamping branch circuit, a first primary switch, a transformer, a rectifier circuit, a resonant inductor, a resonant capacitor, and positive and negative output terminals. The clamping branch circuit includes a clamping capacitor and a second primary switch serially connected between the first and second terminals thereof. The first terminal is coupled to the positive input terminal. The first primary switch is connected between the second terminal and the negative input terminal. The primary winding of the transformer is connected to the clamping branch circuit in parallel. The rectifier circuit includes first and second bridge arms connected in parallel. Connection terminals in the first and second bridge arms are coupled to two terminals of the secondary winding of the transformer correspondingly. The first and second bridge arms are coupled between the positive and negative output terminals.
    Type: Application
    Filed: May 24, 2022
    Publication date: January 5, 2023
    Inventors: Zhongwang Yang, Qi Xia
  • Publication number: 20220352826
    Abstract: The present disclosure provides a power converter including a first capacitor, a second capacitor, and a power module. The first capacitor and the second capacitor are connected in series. The power module is electrically connected to the first capacitor and the second capacitor and includes a circuit board, an absorption capacitor, a primary switch circuit, a magnetic component, and a secondary circuit. The absorption capacitor, the primary switch circuit, the magnetic component and the secondary circuit are disposed on the circuit board. A primary winding and a secondary winding of the magnetic component are electrically connected to the primary switch circuit and the secondary circuit respectively.
    Type: Application
    Filed: April 22, 2022
    Publication date: November 3, 2022
    Inventors: Yang Leng, Zhongwang Yang, Yankai Liu, Wenhua Li, Wei Tang
  • Publication number: 20220321017
    Abstract: A power conversion module is disclosed. The power conversion module includes a power conversion module includes a circuit board and a first basic power unit. The first basic power unit is disposed on the circuit board and includes a magnetic device, a primary switch circuit, a first secondary rectifying circuit and a first positive output terminal pin. The primary switch circuit, the first secondary rectifying circuit, the magnetic device and the first positive output terminal pin are sequentially arranged on the circuit board along a first direction.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Da Jin, Yang Leng, Litao Qian, Zhongwang Yang
  • Publication number: 20220319759
    Abstract: A magnetic device includes a magnetic core assembly, a primary winding, a first secondary winding and a second secondary winding. The magnetic core assembly includes a first magnetic cover, a second magnetic cover, a first magnetic leg, a second magnetic leg, a third magnetic leg and a fourth magnetic leg. The primary winding is wound around the first magnetic leg and the third magnetic leg. A first terminal of the first secondary winding is disposed between the first magnetic leg and the second magnetic leg. A second terminal of the first secondary winding is disposed between the third magnetic leg and the fourth magnetic leg. A first terminal of the second secondary winding is disposed between the first magnetic leg and the fourth magnetic leg. A second terminal of the second secondary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Publication number: 20220131471
    Abstract: A power converter includes N power conversion units. Each power conversion unit includes a main switching circuit, a transformer, a synchronous rectifier circuit, an input signal terminal and a signal processor. A primary winding of the transformer is connected with the main switching circuit. The synchronous rectifier circuit is connected with a secondary winding of the transformer. The input signal terminal receives a first PWM control signal. The signal processor generates first and second PWM driving signals to drive the main switching circuit according to the first PWM control signal, and a phase difference between the first and second PWM driving signals is (180±?) degree. The signal processor generates third and fourth PWM driving signals to drive the synchronous rectifier circuit according to the first PWM control signal, and a phase difference between the third and fourth PWM driving signals is (180±?) degree.
    Type: Application
    Filed: September 23, 2021
    Publication date: April 28, 2022
    Inventors: Yahong Xiong, Yang Leng, Junguo Cui, Zhongwang Yang
  • Publication number: 20210272737
    Abstract: A magnetic assembly includes a magnetic core, four primary windings and four secondary windings. The magnetic core includes four lateral legs. The four primary windings and the corresponding secondary windings are magnetically coupled with each other, and the four primary windings and the corresponding secondary windings are wound on the corresponding lateral legs. The winding directions of the four secondary windings on the corresponding lateral legs are identical. A phase difference between a magnetic flux flowing through a specified lateral leg of the four lateral legs and a magnetic flux flowing through an adjacent lateral leg is any value in the range between 150 degrees and 210 degrees. A phase difference between the magnetic flux flowing through the specified lateral leg and the magnetic flux flowing through another adjacent lateral leg is any value in the range between 60 degrees and 120 degrees.
    Type: Application
    Filed: February 4, 2021
    Publication date: September 2, 2021
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Qinghua Su
  • Patent number: 9570999
    Abstract: The present disclosure discloses a DC-DC converter and a DC-DC converter system thereof. The DC-DC converter includes: a power conversion circuit; and a current detection circuit for detecting current flowing into or flowing out of the power conversion circuit, which includes: an inductor coupled to the power conversion circuit; a detection module including an induction winding and an impedance component electrically connected in series, the detection module and the inductor being connected in parallel; and an output module coupled to two ends of the impedance component for generating a current detection signal reflecting the current flowing into or flowing out of the power conversion circuit.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: February 14, 2017
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Zhongwang Yang, Qiong Zhang, Guisong Huang
  • Patent number: 9559604
    Abstract: A DC/DC converter and a control method thereof are disclosed. The DC/DC converter comprises: an output voltage regulation circuit configured to regulate an output voltage of the DC/DC converter, so as to output a duty cycle regulation signal; a PWM generator electrically coupled to the output voltage regulation circuit and configured to generate a first duty cycle signal according to a first clock signal and the duty cycle regulation signal; a detection circuit configured to output a control signal according to a second clock signal and a feedback signal, wherein the feedback signal is configured to detect whether or not the transient change of an input voltage of the DC/DC converter occurs; and a CBC regulation circuit electrically coupled to the PWM generator and the detection circuit, and configured to receive the first duty cycle signal and the control signal and output a second duty cycle signal.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: January 31, 2017
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Zhongwang Yang, Shengli Lu, Qiong Zhang, Guisong Huang
  • Patent number: 9318967
    Abstract: The present disclosure discloses a DC/DC converter and a DC/DC conversion system. The DC/DC converter includes a transformer, a primary power circuit, a secondary bridge synchronous rectifying circuit, an output inductor and a control circuit. The primary power circuit receives an input voltage, and deliver a symmetrical power flow to a secondary side of the transformer during positive and negative switching cycles, and a magnetic flux in the transformer core is balanced through the above symmetrical power flow. The rectifying circuit is coupled to a secondary winding of the transformer. The control circuit provides primary and secondary driving signals to the primary power circuit and the rectifying circuit, respectively. When an output voltage of the primary power circuit is zero, the control circuit controls the first, the second, the third and the fourth switches to be conductive.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: April 19, 2016
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Yahong Xiong, Zhongwang Yang, Qiong Zhang, Guisong Huang
  • Patent number: 9225251
    Abstract: A power converter includes a power module, a feedback module, and a control module. The power module is used for converting an input voltage into an output voltage. The feedback module is electrically connected with the power module for generating a feedback voltage according to the output voltage. The control module is electrically connected with the feedback module and the power module for comparing a reference duty cycle value with a duty cycle, generating a variable reference voltage according to the comparison between the reference duty cycle value and the duty cycle, comparing the variable reference voltage with the feedback voltage, and adjusting the duty cycle according to the comparison between the variable reference voltage and the feedback voltage.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: December 29, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Zhongwang Yang, Guojun Xu, Guisong Huang