Patents by Inventor Pengjie Lai

Pengjie Lai 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: 10892637
    Abstract: A power supply covering both power sharing and power backup functions run in a more efficient and flexible way. The power supply adopts a power sharing converter coupled between a first bus terminal and a second bus terminal, so that if one of the bus terminals provides insufficient power, the other bus terminal kicks in by way of the power sharing converter to provide power support. In addition, a storage capacitor may also kick in to provide power support if one of the bus terminals provide insufficient power via or not via the power sharing converter.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: January 12, 2021
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Patent number: 10855174
    Abstract: A power supply covering power sharing and overshoot preventing functions. In the power supply, a first eFuse is used to deliver a first input power source to a first load at a first bus terminal, and a second eFuse is used to deliver a second input power source to a second load at a second bus terminal. When the current flowing through one eFuse hits its current limit threshold, the other input power source kicks in to provide power support. The current limit threshold of each eFuse is set to be lower than its maximum rated current.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: December 1, 2020
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Patent number: 10615598
    Abstract: An electrical circuit has a first integrated AC switch circuit connecting a first load to an AC voltage when the first integrated AC switch circuit is ON and a second integrated AC switch circuit connecting a second load to the AC voltage when the second integrated AC switch circuit is ON. The first integrated AC switch circuit generates a first DC voltage across a first capacitor and provides a pulse signal. When a VCCE pin of the second integrated AC switch circuit is coupled to a reference ground, a second capacitor is charged by the second integrated AC switch circuit to provide a second DC voltage. And when the VCCE pin of the second integrated AC switch circuit is floating or pulls high, the second capacitor is charged by the pulse signal.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: April 7, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Jian Jiang, Pengjie Lai, Bo Zhou, Junyong Gong, Eric Yang
  • Patent number: 10523048
    Abstract: A power supply covering both power sharing and power backup functions run in a more efficient and flexible way. The power supply adopts a power sharing converter coupled between a first bus terminal and a second bus terminal, so that if one of the bus terminals provides insufficient power, the other bus terminal kicks in by way of the power sharing converter to provide power support. In addition, a storage capacitor may also kick in to provide power support if one of the bus terminals provide insufficient power via or not via the power sharing converter.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: December 31, 2019
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Pengjie Lai, Jian Jiang
  • Publication number: 20190260291
    Abstract: A power supply covering power sharing and overshoot preventing functions. In the power supply, a first eFuse is used to deliver a first input power source to a first load at a first bus terminal, and a second eFuse is used to deliver a second input power source to a second load at a second bus terminal. When the current flowing through one eFuse hits its current limit threshold, the other input power source kicks in to provide power support. The current limit threshold of each eFuse is set to be lower than its maximum rated current.
    Type: Application
    Filed: April 9, 2019
    Publication date: August 22, 2019
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Publication number: 20190260224
    Abstract: A power supply covering both power sharing and power backup functions run in a more efficient and flexible way. The power supply adopts a power sharing converter coupled between a first bus terminal and a second bus terminal, so that if one of the bus terminals provides insufficient power, the other bus terminal kicks in by way of the power sharing converter to provide power support. In addition, a storage capacitor may also kick in to provide power support if one of the bus terminals provide insufficient power via or not via the power sharing converter.
    Type: Application
    Filed: February 16, 2018
    Publication date: August 22, 2019
    Inventors: Pengjie Lai, Jian Jiang
  • Publication number: 20190260226
    Abstract: A power supply covering both power sharing and power backup functions run in a more efficient and flexible way. The power supply adopts a power sharing converter coupled between a first bus terminal and a second bus terminal, so that if one of the bus terminals provides insufficient power, the other bus terminal kicks in by way of the power sharing converter to provide power support. In addition, a storage capacitor may also kick in to provide power support if one of the bus terminals provide insufficient power via or not via the power sharing converter.
    Type: Application
    Filed: April 1, 2019
    Publication date: August 22, 2019
    Inventors: Ming Lu, Pengjie Lai, Jian Jiang
  • Publication number: 20180287381
    Abstract: An electrical circuit has a first integrated AC switch circuit connecting a first load to an AC voltage when the first integrated AC switch circuit is ON and a second integrated AC switch circuit connecting a second load to the AC voltage when the second integrated AC switch circuit is ON. The first integrated AC switch circuit generates a first DC voltage across a first capacitor and provides a pulse signal. When a VCCE pin of the second integrated AC switch circuit is coupled to a reference ground, a second capacitor is charged by the second integrated AC switch circuit to provide a second DC voltage. And when the VCCE pin of the second integrated AC switch circuit is floating or pulls high, the second capacitor is charged by the pulse signal.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 4, 2018
    Inventors: Jian Jiang, Pengjie Lai, Bo Zhou, Junyong Gong, Eric Yang
  • Publication number: 20180269783
    Abstract: A dual-channel constant on time SMPS with a phase-locked loop. The dual-channel constant on time SMPS effectively controls the phase shift between the two power switching circuits by generating a phase error signal based on the switching signals which are used to control the power switching circuits, the phase shift between the two power switching circuits is kept to a desired degree by regulating the second switching signal.
    Type: Application
    Filed: March 16, 2017
    Publication date: September 20, 2018
    Inventors: Qizhang Yin, Pengjie Lai, Chuntao Feng
  • Patent number: 9998009
    Abstract: A switch mode power supply (SMPS) with control scheme selection for high-voltage configuration and low-voltage configuration of the SMPS. The SMPS operates in at least a charge state or a release state. The SMPS has a mode control module receiving a mode setting signal indicative of the configuration of the SMPS and a state indication signal indicative of the state of the SMPS. The SMPS selects a boost control module or a buck control module to control the SMPS according to the mode setting signal and the state indication signal.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: June 12, 2018
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Pengjie Lai, Jian Jiang
  • Patent number: 9935630
    Abstract: An AC switch circuit coupled between an AC input signal and an AC load has a first switch, a second switch, a driving circuit, and a power generation circuit. The first switch blocks a first half-cycle of the AC input signal when turned OFF, and the second switch blocks a second half-cycle of the AC input signal when turned OFF. The driving circuit provides a driving signal to control the first switch and the second switch based on an enable signal. The power generation circuit provides a voltage signal to power the driving circuit. The power generation circuit stores energy from the AC input signal when the first switch and the second switch are turned OFF, and the power generation circuit is disconnected from the AC input signal when the first switch and the second switch are turned ON.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 3, 2018
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Jian Jiang, Pengjie Lai, Bo Zhou, Junyong Gong, Eric Yang
  • Publication number: 20170084404
    Abstract: An AC switch circuit coupled between an AC input signal and an AC load has a first switch, a second switch, a driving circuit, and a power generation circuit. The first switch blocks a first half-cycle of the AC input signal when turned OFF, and the second switch blocks a second half-cycle of the AC input signal when turned OFF. The driving circuit provides a driving signal to control the first switch and the second switch based on an enable signal. The power generation circuit provides a voltage signal to power the driving circuit. The power generation circuit stores energy from the AC input signal when the first switch and the second switch are turned OFF, and the power generation circuit is disconnected from the AC input signal when the first switch and the second switch are turned ON.
    Type: Application
    Filed: September 18, 2015
    Publication date: March 23, 2017
    Inventors: Jian Jiang, Pengjie Lai, Bo Zhou, Junyong Gong, Eric Yang
  • Patent number: 9590503
    Abstract: A switching converter has an input port for receiving an input voltage and an output port for providing an output voltage. The switching converter has a power stage, an energy stored circuit, a power conversion circuit and a control circuit. The power stage has an input terminal coupled to the input port and an output terminal coupled to the output port. The energy stored circuit is charged by the input voltage and provides a first bias voltage which maintains a predetermined time period after the input voltage is less than a predetermined voltage level. The power conversion circuit provides a second bias voltage. The control circuit provides a control signal to control the power stage and discharges the output voltage based on a discharge control signal, wherein the control circuit is powered by either the first bias voltage or the second bias voltage.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 7, 2017
    Assignee: MONOLITHIC POWER SYSTEMS, INC.
    Inventors: Pengjie Lai, Jian Jiang
  • Publication number: 20160079852
    Abstract: A switching converter has an input port for receiving an input voltage and an output port for providing an output voltage. The switching converter has a power stage, an energy stored circuit, a power conversion circuit and a control circuit. The power stage has an input terminal coupled to the input port and an output terminal coupled to the output port. The energy stored circuit is charged by the input voltage and provides a first bias voltage which maintains a predetermined time period after the input voltage is less than a predetermined voltage level. The power conversion circuit provides a second bias voltage. The control circuit provides a control signal to control the power stage and discharges the output voltage based on a discharge control signal, wherein the control circuit is powered by either the first bias voltage or the second bias voltage.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 17, 2016
    Inventors: Pengjie Lai, Jian Jiang
  • Patent number: 8693276
    Abstract: The present invention discloses a power supply. The power supply may comprise an input power terminal, a capacitor module, a first converter module and a second converter module. The first converter module may have a first terminal and a second terminal, wherein the first terminal is coupled to the input power terminal and the second terminal is coupled to the capacitor module. The second converter module may comprise an input and an output, wherein the input of the second converter module is coupled to the input power terminal, and the output of the second converter module is configured to supply a load.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: April 8, 2014
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Pengjie Lai, Jian Jiang
  • Patent number: 8643351
    Abstract: The present disclosure discloses a switching mode power supply with bi-direction buck and boost control. The switching mode power supply enters boost mode when an input signal is higher than a preset threshold to pump the input signal to a higher level; and the switching mode power supply enters buck mode when the input signal breaks down to release the stored energy.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: February 4, 2014
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Pengjie Lai, Jian Jiang, Eric Yang
  • Publication number: 20130176004
    Abstract: The present disclosure discloses a switching mode power supply with constant peak current mode control. During the operation of the switching mode power supply, in one hand, the current flowing through a high-side switch is sensed and compared to a current reference signal to control the turning off of the high-side switch; in the other hand, the output voltage is sensed and compared to a voltage reference signal to control the turning on of the high-side switch. In addition, the current reference signal may be adjusted to a lower value when the switching mode power supply enters light load condition. By using the above control method, the system performance is highly increased.
    Type: Application
    Filed: January 10, 2012
    Publication date: July 11, 2013
    Applicant: Monolithic Power Systems, Inc.
    Inventors: Pengjie Lai, Jian Jiang, Eric Yang
  • Publication number: 20130170311
    Abstract: The present invention discloses a power supply. The power supply may comprise an input power terminal, a capacitor module, a first converter module and a second converter module. The first converter module may have a first terminal and a second terminal, wherein the first terminal is coupled to the input power terminal and the second terminal is coupled to the capacitor module. The second converter module may comprise an input and an output, wherein the input of the second converter module is coupled to the input power terminal, and the output of the second converter module is configured to supply a load.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Inventors: Pengjie Lai, Jian Jiang
  • Publication number: 20130169258
    Abstract: The present disclosure discloses a switching mode power supply with bi-direction buck and boost control. The switching mode power supply enters boost mode when an input signal is higher than a preset threshold to pump the input signal to a higher level; and the switching mode power supply enters buck mode when the input signal breaks down to release the stored energy.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Inventors: Pengjie Lai, Jian Jiang, Eric Yang