Patents by Inventor Lijie Jiang

Lijie Jiang 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: 10782718
    Abstract: A method for automatically testing a voltage regulator, including: providing an auto-test setting to a test master, wherein the auto-test setting specifies an auto-sweep setting and a loop comprising an ordered set of serial command frames; producing, in the test master, a test suite comprising a plurality of serial command frames by executing the loop multiple times according to the auto-sweep setting until an array of a preset variable corresponding to the auto-sweep setting is traversed, wherein the preset variable is changed in each iteration of the loop; sequentially transmitting every serial command frame to the voltage regulator; and receiving every resulting behavior of the voltage regulator when operated in accordance with the every serial command frame.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: September 22, 2020
    Assignee: Hangzhou MPS Semiconductor Technology Ltd.
    Inventors: Wangmiao Hu, Lijie Jiang, Qian Ouyang, Qingqing Zheng, Binci Xu, Jinghai Zhou, Eric Yang
  • Patent number: 10756621
    Abstract: A voltage regulator provides an output voltage and an output current. The output voltage decreases with an increase of the output current when the output current is lower than a current breaking point, and the output voltage is maintained when the output current reaches the current breaking point.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: August 25, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Binci Xu, Yongliang Wang, Tao Zhao, Lijie Jiang
  • Publication number: 20200259603
    Abstract: A method of configuring a special subframe, a detection method, a base station, and a terminal are provided. The method of configuring a special subframe includes: in case that a special subframe configuration 10 is adopted, transmitting, to a terminal, indication information regarding a configuration of a downlink pilot timeslot (DwPTS), where the indication information regarding the configuration of the DwPTS is used to indicate whether a common reference signal (CRS) is transmitted in the DwPTS and/or indicate whether a physical downlink shared channel (PDSCH) is transmitted in the DwPTS; and transmitting the indication information to the terminal.
    Type: Application
    Filed: September 6, 2018
    Publication date: August 13, 2020
    Inventors: Jing DONG, Tianming JIANG, Xueying HOU, Lijie HU
  • Patent number: 10725938
    Abstract: An auto-loop regulation system for a voltage regulator receives a plurality of pre-determined loop parameters through an interactive computing equipment, and the voltage regulator operates according to the plurality of pre-determined loop parameters, wherein the interactive computing equipment regulates at least one of the loop parameters automatically in real time according to an online loop value when the voltage regulator is operating online, and the interactive computing equipment keeps regulating the loop parameters until the online value of the voltage regulator matches with a target value.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 28, 2020
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Lijie Jiang, Xiaokang Wu, Suhua Luo, Qian Ouyang
  • Patent number: 10673336
    Abstract: A DC-DC converter with droop regulation for better transient performance. The DC-DC converter includes a switching circuit, a comparison circuit and a logic control circuit. A differential voltage indicative of an output voltage of the switching circuit, and a droop voltage indicative of an output current of the switching circuit, are generated. A high-pass filtered signal is obtained by high-pass filtering the droop voltage. The comparison circuit responds to the differential voltage, a reference voltage and the high-pass filtered signal to generate a set signal. The logic control circuit generates a control signal based on the set signal to control the switching circuit.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 2, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Lijie Jiang, Xiaokang Wu, Binci Xu
  • Patent number: 10651721
    Abstract: A multi-phase converter has a plurality of switching circuits coupled in parallel and a control circuit. The control circuit provides a set signal to successively turn ON the switching circuits under power operation based on an output voltage, a reference signal and a nonlinear control signal. When a number of switching circuits under power operation decreases, the nonlinear control signal increases to a preset value from an initial value, and then the nonlinear control signal decreases to the initial value with a preset slew rate.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: May 12, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Xiaokang Wu, Lijie Jiang, Suhua Luo
  • Patent number: 10620677
    Abstract: An autonomous power system has a voltage regulator which converts an input voltage to an output voltage according to a reference voltage. A control method for the power system: receiving a voltage identification code sent by a processor; providing an autonomous voltage identification code when the voltage identification sent by the processor keeps constant during a first preset duration, wherein the autonomous voltage identification code can be updated self-adaptively; providing a reference voltage according to a sum of the voltage identification code and the autonomous identification code; and adjusting the output voltage according to the reference voltage.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: April 14, 2020
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Reagan Luo, Qian Ouyang, Lijie Jiang, Marvin Ma, Xiaokang Wu
  • Publication number: 20200007023
    Abstract: A multi-phase converter has a plurality of switching circuits coupled in parallel and a control circuit. The control circuit provides a set signal to successively turn ON the switching circuits under power operation based on an output voltage, a reference signal and a nonlinear control signal. When a number of switching circuits under power operation decreases, the nonlinear control signal increases to a preset value from an initial value, and then the nonlinear control signal decreases to the initial value with a preset slew rate.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 2, 2020
    Inventors: Xiaokang Wu, Lijie Jiang, Suhua Luo
  • Patent number: 10523107
    Abstract: A method for controlling a voltage regulator is receiving a voltage identification code which has a pulse width modulation signal, providing a duty signal via measuring a duty cycle of the pulse width modulation signal, calculating a target voltage based on the duty signal, providing a reference signal based on the duty signal and the target voltage. If it is judged that the duty cycle of the pulse width modulation signal increases, the reference signal is restricted increasing or keeping its value without decreasing, and if it is judged that the duty cycle of the pulse width modulation signal decreases, the reference signal is restricted decreasing or keeping its value without increasing.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: December 31, 2019
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Binci Xu, Lijie Jiang, Chao Liu, Tao Zhao
  • Patent number: 10498241
    Abstract: A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 3, 2019
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Xiaokang Wu, Lijie Jiang, Binci Xu
  • Patent number: 10498234
    Abstract: A voltage regulator has a switching circuit and a control circuit. The switching circuit provides an output voltage and an output current. The control circuit provides a switching control signal to the switching circuit to adjust the output voltage, such that the output voltage decreases with a first slope as the output current increases when the output current is less than a first current level, the output voltage decreases with a second slope as the output current increases when the output current is larger than the first current level and is less than a second current level, and the output voltage decreases with a third slope as the output current increases when the output current is larger than the second current level.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: December 3, 2019
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Chao Liu, Daocheng Huang, Lijie Jiang, Wangmiao Hu, Jinghai Zhou
  • Publication number: 20190341843
    Abstract: A voltage regulator provides an output voltage and an output current. The output voltage decreases with an increase of the output current when the output current is lower than a current breaking point, and the output voltage is maintained when the output current reaches the current breaking point.
    Type: Application
    Filed: April 19, 2019
    Publication date: November 7, 2019
    Inventors: Binci Xu, Yongliang Wang, Tao Zhao, Lijie Jiang
  • Publication number: 20190302818
    Abstract: A voltage regulator has a switching circuit and a control circuit. The switching circuit provides an output voltage and an output current. The control circuit provides a switching control signal to the switching circuit to adjust the output voltage, such that the output voltage decreases with a first slope as the output current increases when the output current is less than a first current level, the output voltage decreases with a second slope as the output current increases when the output current is larger than the first current level and is less than a second current level, and the output voltage decreases with a third slope as the output current increases when the output current is larger than the second current level.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 3, 2019
    Inventors: Chao Liu, Daocheng Huang, Lijie Jiang, Wangmiao Hu, Jinghai Zhou
  • Publication number: 20190294227
    Abstract: A power supply has a reference regulation circuit and a voltage regulator. The reference regulation circuit receives a VID code and a slew rate command from a processor and regulates a reference voltage based on the VID code and the slew rate command. The voltage regulator converts an input voltage to an output voltage based on the reference voltage. The circuit has a ?-? modulation unit to generate a count duration signal based on a target count signal, wherein the target count signal is generated by dividing a voltage regulation step by the slew rate command, both the target count signal and the count duration signal are digital signals, the target count signal represents a real number having an integer part and a decimal part, the count duration signal represents an integer number, the circuit further regulates the reference voltage based on the count duration signal and the VID code.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 26, 2019
    Inventors: Suhua Luo, Lijie Jiang
  • Patent number: 10404153
    Abstract: A method for controlling a voltage regulator is receiving a voltage identification code which has a pulse width modulation signal, providing a duty signal via measuring a duty cycle of the pulse width modulation signal, calculating a target voltage based on the duty signal, providing a reference signal via filtering the duty signal by a first filter if the voltage identification code varies, and providing the reference signal via filtering the duty signal by a second filter if the reference signal is in a range determined by the target voltage.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: September 3, 2019
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Binci Xu, Lijie Jiang, Chao Liu, Tao Zhao
  • Patent number: 10348197
    Abstract: A DC-DC converter with transient control. The DC-DC converter includes a power switching circuit, a current to voltage converter, a PI circuit 403, a voltage to current converter 404 and a logic and control circuit 405. The DC-DC converter obtains the transient information of a current flowing through the power switching circuit, to slow down the variation of the output voltage, so as to eliminate the overshot issue.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 9, 2019
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Chao Liu, Lijie Jiang, Qian Ouyang, Xiaokang Wu
  • Publication number: 20190207518
    Abstract: A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.
    Type: Application
    Filed: December 20, 2018
    Publication date: July 4, 2019
    Inventors: Xiaokang Wu, Lijie Jiang, Binci Xu
  • Publication number: 20190199212
    Abstract: A DC-DC converter with droop regulation for better transient performance. The DC-DC converter includes a switching circuit, a comparison circuit and a logic control circuit. A differential voltage indicative of an output voltage of the switching circuit, and a droop voltage indicative of an output current of the switching circuit, are generated. A high-pass filtered signal is obtained by high-pass filtering the droop voltage. The comparison circuit responds to the differential voltage, a reference voltage and the high-pass filtered signal to generate a set signal. The logic control circuit generates a control signal based on the set signal to control the switching circuit.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 27, 2019
    Inventors: Lijie Jiang, Xiaokang Wu, Binci Xu
  • Publication number: 20190129868
    Abstract: An auto-loop regulation system for a voltage regulator receives a plurality of pre-determined loop parameters through an interactive computing equipment, and the voltage regulator operates according to the plurality of pre-determined loop parameters, wherein the interactive computing equipment regulates at least one of the loop parameters automatically in real time according to an online loop value when the voltage regulator is operating online, and the interactive computing equipment keeps regulating the loop parameters until the online value of the voltage regulator matches with a target value.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Inventors: Lijie Jiang, Xiaokang Wu, Suhua Luo, Qian Ouyang
  • Patent number: D842434
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: March 5, 2019
    Inventor: Lijie Jiang