Patents by Inventor Pei-Qing Hu

Pei-Qing Hu 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: 10483949
    Abstract: A driving circuit for driving a power switch. The driving circuit and the power switch are collaboratively defined as an equivalent circuit. The equivalent circuit includes a first equivalent capacitor corresponding to an input capacitor of the power switch, an equivalent inductor, and a second equivalent capacitor corresponding to a parasitic parameter of at least one driving switch. In the charging procedure or the discharging of the first equivalent capacitor, a change amount of charges in the first equivalent capacitor while a voltage of the input capacitor is changed from a voltage corresponding to no inductor current to a set voltage is larger than or equal to a change amount of charges in the second equivalent capacitor while the voltage of the input capacitor is changed from the voltage corresponding to no inductor current to a steady voltage.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: November 19, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Pei-Qing Hu, Jian-Hong Zeng, Hao-Yi Ye
  • Patent number: 10056780
    Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: August 21, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Pei-Qing Hu, Chao Yan, Jian-Hong Zeng
  • Patent number: 9977476
    Abstract: Disclosed herein is a power supply apparatus that includes a main board, a power unit, a control unit, pads and a pin. The control unit and the power unit are stacked on the main board and at a position in adjacent to a load; the plurality of pads are distributed along the lateral side of the power unit and the lateral side of the control unit; the plurality of pins and pads are electrically coupled and electrically coupled with the main board, the control unit and the power unit; the control unit is configured to control the power unit, so that the power unit supplies electricity to the adjacent load.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: May 22, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Jian-Hong Zeng, Chao Yan, Pei-Qing Hu
  • Patent number: 9819263
    Abstract: A power converter includes a carrier, a first electronic component, a second electronic component, and a connection part. The first electronic component is disposed on the bottom surface of the carrier. The second electronic component is disposed on the top surface of the carrier. A first terminal of the connection part is coupled to the top surface or the bottom surface of the carrier. A second terminal of the connection part is a bonding pad and attached to the first electronic component's surface apart from the carrier. The carrier is disposed at ? to ? of a height of the power-converter. The connection part is fabricated by mechanical support of the first electronic component.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: November 14, 2017
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Jian-Hong Zeng, Shou-Yu Hong, Xiao-Ni Xin, Pei-Qing Hu
  • Publication number: 20170155377
    Abstract: A driving circuit for driving a power switch. The driving circuit and the power switch are collaboratively defined as an equivalent circuit. The equivalent circuit includes a first equivalent capacitor corresponding to an input capacitor of the power switch, an equivalent inductor, and a second equivalent capacitor corresponding to a parasitic parameter of at least one driving switch. In the charging procedure or the discharging of the first equivalent capacitor, a change amount of charges in the first equivalent capacitor while a voltage of the input capacitor is changed from a voltage corresponding to no inductor current to a set voltage is larger than or equal to a change amount of charges in the second equivalent capacitor while the voltage of the input capacitor is changed from the voltage corresponding to no inductor current to a steady voltage.
    Type: Application
    Filed: October 24, 2016
    Publication date: June 1, 2017
    Inventors: Pei-Qing Hu, Jian-Hong Zeng, Hao-Yi Ye
  • Publication number: 20170104410
    Abstract: A power converter includes a carrier, a first electronic component, a second electronic component, and a connection part. The first electronic component is disposed on the bottom surface of the carrier. The second electronic component is disposed on the top surface of the carrier. A first terminal of the connection part is coupled to the top surface or the bottom surface of the carrier. A second terminal of the connection part is a bonding pad and attached to the first electronic component's surface apart from the carrier. The carrier is disposed at ? to ? of a height of the power-converter. The connection part is fabricated by mechanical support of the first electronic component.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 13, 2017
    Inventors: Jian-Hong ZENG, Shou-Yu HONG, Xiao-Ni XIN, Pei-Qing HU
  • Publication number: 20160181865
    Abstract: A power supply system includes a first converting stage, a second converting stage, and a third converting stage. The first converting stage is configured to generate a first voltage according to a first input voltage. The second converting stage is coupled to the first converting stage in series, and includes a first non-regulated power converter and a second non-regulated power converter. The first non-regulated power converter is configured to generate a second voltage according to the first voltage. The second non-regulated power converter is configured to generate a third voltage according to the second voltage. The second voltage is higher than the third voltage, and a varying range of the second voltage is wider than a varying range of the third voltage. The third converting stage is configured to generate a first output voltage according to the third voltage.
    Type: Application
    Filed: November 26, 2015
    Publication date: June 23, 2016
    Inventors: Pei-Qing HU, Chao YAN, Jian-Hong ZENG
  • Publication number: 20160062428
    Abstract: Disclosed herein is a power supply apparatus that includes a main board, a power unit, a control unit, pads and a pin. The control unit and the power unit are stacked on the main board and at a position in adjacent to a load; the plurality of pads are distributed along the lateral side of the power unit and the lateral side of the control unit; the plurality of pins and pads are electrically coupled and electrically coupled with the main board, the control unit and the power unit; the control unit is configured to control the power unit, so that the power unit supplies electricity to the adjacent load.
    Type: Application
    Filed: August 31, 2015
    Publication date: March 3, 2016
    Inventors: Jian-Hong ZENG, Chao YAN, Pei-Qing HU
  • Patent number: 9236807
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: January 12, 2016
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Hong-Yuan Jin, Pei-Qing Hu, Hong-Jian Gan, Jian-Ping Ying
  • Patent number: 8923018
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit having a load, a rectangular wave generator having a bridge arm, a resonant tank, a detection unit and a control unit. The bridge arm includes a first and a second switches connected each other. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls ON/OFF state of the first and second switches by pulse width modulation mode to convert an input voltage into at least one rectangular wave for the resonant tank. A duty ratio of the first switch is within a first or second predetermined range, and a duty ratio of the second switch is complementary to the duty ratio of the first switch, whereby a voltage gain of the DC/DC converter is greater than 1.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: December 30, 2014
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Pei-Qing Hu, Hong-Yuan Jin, Hong-Jian Gan, Jian-Ping Ying
  • Patent number: 8923019
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, wherein the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into driving pulses. The resonant tank provides a first voltage based on the driving pulses for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls the rectangular wave generator in a hiccup mode to reduce a ratio of a work period to a stop period, or makes that number of the driving pulses within the current work period is less than the number of the driving pulses when a duty ratio is 50%.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Pei-Qing Hu, Hong-Yuan Jin, Hong-Jian Gan, Jian-Ping Ying
  • Publication number: 20130176005
    Abstract: The DC/DC converter includes a power unit, an output detection unit, a control unit and a compensation unit. The output detection unit detects an output stage of the power unit. The control unit provides a driving signal based on the output stage for the power unit to control the operation of the power unit. When the power unit operates in an intermittent working mode, the compensation unit provides a compensation signal for the control unit, and the control unit adjusts the driving signal according to the compensation signal, so that during at least one duty cycle an output power of the power unit in the intermittent working mode is higher than an output power of the power unit at a switching moment from a normal mode (continuous working mode) to the intermittent working mode, thereby when the load is not changed, the average number of driving signals is reduced.
    Type: Application
    Filed: May 25, 2012
    Publication date: July 11, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Hong-Yuan JIN, Pei-Qing HU, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20120250361
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit having a load, a rectangular wave generator having a bridge arm, a resonant tank, a detection unit and a control unit. The bridge arm includes a first and a second switches connected each other. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls ON/OFF state of the first and second switches by pulse width modulation mode to convert an input voltage into at least one rectangular wave for the resonant tank. A duty ratio of the first switch is within a first or second predetermined range, and a duty ratio of the second switch is complementary to the duty ratio of the first switch, whereby a voltage gain of the DC/DC converter is greater than 1.
    Type: Application
    Filed: March 20, 2012
    Publication date: October 4, 2012
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Pei-Qing HU, Hong-Yuan JIN, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20120250358
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, where the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into at least one rectangular wave. The resonant tank provides a first voltage based on the rectangular wave for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is light-load or a no-load, the control unit controls a working frequency or a duty ratio of the rectangular wave, so that the duty ratio of the rectangular wave is within a predetermined range, in which a voltage gain of the DC/DC converter is greater than another voltage gain under the condition of 50% duty ratio.
    Type: Application
    Filed: March 22, 2012
    Publication date: October 4, 2012
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Hong-Yuan Jin, Pei-Qing Hu, Hong-Jian Gan, Jian-Ping Ying
  • Publication number: 20120250356
    Abstract: A DC/DC converter, a power converter and a control method thereof are disclosed, wherein the DC/DC converter includes an output circuit, a rectangular wave generator, a resonant tank, a detection unit and a control unit. The output circuit has a load. The rectangular wave generator converts an input voltage into driving pulses. The resonant tank provides a first voltage based on the driving pulses for the output circuit. The detection unit detects a signal related to a state of the load. When the state of the load is a light-load or a no-load, the control unit controls the rectangular wave generator in a hiccup mode to reduce a ratio of a work period to a stop period, or makes that number of the driving pulses within the current work period is less than the number of the driving pulses when a duty ratio is 50%.
    Type: Application
    Filed: March 22, 2012
    Publication date: October 4, 2012
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Pei-Qing Hu, Hong-Yuan Jin, Hong-Jian Gan, Jian-Ping Ying