Patents by Inventor Yen-Hsun Hsu

Yen-Hsun Hsu 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: 10444779
    Abstract: A low dropout voltage regulator for generating an output regulated voltage is provided. The low dropout voltage regulator includes a first transistor and a current recycling circuit. The first transistor has a first terminal for receiving an input supply voltage, a second terminal for generating the output regulated voltage, and a control terminal for receiving a control voltage. The current recycling circuit is configured to drain a feeding current to the second terminal of the first transistor in response to a first signal having feedback information of the output regulated voltage.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: October 15, 2019
    Assignee: MEDIATEK INC.
    Inventors: Hao-Yuan Lin, Chia-Hua Chou, Yen-Hsun Hsu
  • Patent number: 10396771
    Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of generating a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of driver circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality of driver circuits are coupled to the plurality of inductors, respectively. The inductance values of at least two inductors among the plurality of inductors are greater than the inductance value of another inductor.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: August 27, 2019
    Assignee: MediaTek Inc.
    Inventors: Chih-Chen Li, Kuan-Yu Fang, Kuan-Yu Chu, Yen-Hsun Hsu
  • Patent number: 10389344
    Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of operating at a first mode and generates a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of drier circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality driver circuits are coupled to the plurality of inductors respectively. The inductance value of a first inductor among the plurality of inductors is greater than the inductance values of the other inductor.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 20, 2019
    Assignee: MediaTek Inc.
    Inventors: Chien-Wei Kuan, Yen-Hsun Hsu, Tun-Shih Chen
  • Patent number: 10326361
    Abstract: A low dropout regulator that produces an output includes a comparison circuit, configured to compare a signal representative of the output and a reference signal to produce a comparison result. The low dropout regulator also includes a loop controller, coupled to the comparison circuit, configured to generate an output circuit control signal based at least in part on the comparison result. The low dropout regulator also includes an output circuit, comprising two or more output stages, configured to adjust a number of active output stages of the two or more output stages based on the output circuit control signal.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: June 18, 2019
    Assignee: MediaTek Inc.
    Inventors: Nien-Hui Kung, Chia-Hua Chou, Yen-Hsun Hsu
  • Publication number: 20190089252
    Abstract: A high efficiency converter is provided. The converter can be used in applications requiring fast transient response under a first loading condition, and high efficiency under a second loading condition. The converter converts one or more input voltages via two or more conversion paths. Each of the two or more conversion paths corresponds to a different loading condition which indicates a magnitude of a load driven by the converter (e.g., heavy or light), and a target transient response of the load (e.g., fast or slow). A conversion path for a heavy or fast loading condition converts an input voltage directly to a target output voltage. A conversion path for a light or slow loading condition includes a two-stage architecture.
    Type: Application
    Filed: April 25, 2018
    Publication date: March 21, 2019
    Applicant: MediaTek Inc.
    Inventors: Chih-Chen Li, Yen-Hsun Hsu, Tzu-Chi Huang
  • Patent number: 10230259
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip. For example, the charger may include: a plurality of terminals that are positioned on the charger chip, where the plurality of terminals may include a third terminal and a fourth terminal; a plurality of switching units, positioned on the charger chip; and a control circuit, positioned on the charger chip and coupled to the plurality of switching units. The third terminal and the fourth terminal may be arranged for installing an inductor, where the inductor may be utilized by the charger when the control circuit configures the charger into any of at least two hardware configurations within a plurality of hardware configurations.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 12, 2019
    Assignee: MEDIATEK INC.
    Inventors: Nien-Hui Kung, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 10211723
    Abstract: The invention provides a regulator for DC-DC hybrid-mode power regulation of an output voltage and a load current. The regulator may include a controller and a back-end circuit. The controller controls the output voltage and the load current by charging a connection node when a driving signal is at an on-level, and stopping charging the connection node when the driving signal is at an off-level. The back-end circuit is coupled to the controller, capable of switching between a first mode and a second mode to control transition of the driving signal by different schemes. The back-end circuit switches from the second mode to the first mode when a mode-switch criterion is satisfied, and whether the mode-switch criterion is satisfied is independent of a measurement of the output voltage.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: February 19, 2019
    Assignee: MEDIATEK INC.
    Inventors: Shan-Fong Hong, Chih-Chen Li, Kuan-Yu Chu, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 10211646
    Abstract: A resonator circuit includes: a first inductive element and a second inductive element that is connected to the first inductive element in series; a first capacitive element, connected to a first end of the first inductive element and a first output end of the resonator circuit; and a set of second capacitive elements connected in series, the set of second capacitive elements having one end connected between the first and second inductive elements and having another end connected between the second inductive element and a second output end of the resonator circuit. The intermediate end of the set of second capacitive elements is used as a third output end of the resonator circuit.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: February 19, 2019
    Assignee: MediaTek Inc.
    Inventors: Hung-Chih Lin, Yen-Hsun Hsu, Hao-Ping Hong
  • Publication number: 20180262105
    Abstract: A low dropout regulator that produces an output includes a comparison circuit, configured to compare a signal representative of the output and a reference signal to produce a comparison result. The low dropout regulator also includes a loop controller, coupled to the comparison circuit, configured to generate an output circuit control signal based at least in part on the comparison result. The low dropout regulator also includes an output circuit, comprising two or more output stages, configured to adjust a number of active output stages of the two or more output stages based on the output circuit control signal.
    Type: Application
    Filed: February 27, 2018
    Publication date: September 13, 2018
    Applicant: MediaTek Inc.
    Inventors: Nien-Hui Kung, Chia-Hua Chou, Yen-Hsun Hsu
  • Publication number: 20180205371
    Abstract: A voltage supply circuit is provided. The voltage supply circuit is capable of generating a loading current at an output node. The voltage supply circuit includes a plurality of inductors and a plurality of driver circuits. The plurality of inductors are coupled to the output node. Each inductor has an inductance value. The plurality of driver circuits are coupled to the plurality of inductors, respectively. The inductance values of at least two inductors among the plurality of inductors are greater than the inductance value of another inductor.
    Type: Application
    Filed: March 14, 2018
    Publication date: July 19, 2018
    Applicant: MediaTek Inc.
    Inventors: Chih-Chen Li, Kuan-Yu Fang, Kuan-Yu Chu, Yen-Hsun Hsu
  • Publication number: 20180159340
    Abstract: A resonator circuit includes: a first inductive element and a second inductive element that is connected to the first inductive element in series; a first capacitive element, connected to a first end of the first inductive element and a first output end of the resonator circuit; and a set of second capacitive elements connected in series, the set of second capacitive elements having one end connected between the first and second inductive elements and having another end connected between the second inductive element and a second output end of the resonator circuit. The intermediate end of the set of second capacitive elements is used as a third output end of the resonator circuit.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 7, 2018
    Applicant: MediaTek Inc.
    Inventors: Hung-Chih Lin, Yen-Hsun Hsu, Hao-Ping Hong
  • Publication number: 20180120880
    Abstract: A low dropout voltage regulator for generating an output regulated voltage is provided. The low dropout voltage regulator includes a first transistor and a current recycling circuit. The first transistor has a first terminal for receiving an input supply voltage, a second terminal for generating the output regulated voltage, and a control terminal for receiving a control voltage. The current recycling circuit is configured to drain a feeding current to the second terminal of the first transistor in response to a first signal having feedback information of the output regulated voltage.
    Type: Application
    Filed: October 12, 2017
    Publication date: May 3, 2018
    Inventors: Hao-Yuan Lin, Chia-Hua Chou, Yen-Hsun Hsu
  • Patent number: 9923465
    Abstract: A power conversion circuit includes an input terminal, a first switching element, a second switching element, a third switching element, a fourth switching element, a capacitor; an inductor; and a controller configured to control the switching elements to be switched ON/OFF, such that a voltage at the load is regulated by repetitively (1) charging the inductor with a first current before charging the capacitor causing a second current to flow in the inductor and (2) charging the inductor with a third current before discharging the capacitor causing a fourth current to flow in the inductor.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 20, 2018
    Assignee: MEDIATEK INC.
    Inventors: Tso-Min Chen, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 9923387
    Abstract: A resonator circuit includes: a first inductive element and a second inductive element that is connected to the first inductive element in series; a first capacitive element, connected to a first end of the first inductive element and a first output end of the resonator circuit; and a set of second capacitive elements connected in series, the set of second capacitive elements having one end connected between the first and second inductive elements and having another end connected between the second inductive element and a second output end of the resonator circuit. The intermediate end of the set of second capacitive elements is used as a third output end of the resonator circuit.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: March 20, 2018
    Assignee: MediaTek Inc.
    Inventors: Hung-Chih Lin, Yen-Hsun Hsu, Hao-Ping Hong
  • Publication number: 20180054121
    Abstract: A power conversion circuit includes an input terminal, a first switching element, a second switching element, a third switching element, a fourth switching element, a capacitor; an inductor; and a controller configured to control the switching elements to be switched ON/OFF, such that a voltage at the load is regulated by repetitively (1) charging the inductor with a first current before charging the capacitor causing a second current to flow in the inductor and (2) charging the inductor with a third current before discharging the capacitor causing a fourth current to flow in the inductor.
    Type: Application
    Filed: March 17, 2017
    Publication date: February 22, 2018
    Inventors: Tso-Min Chen, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 9899920
    Abstract: A voltage regulator includes a plurality of output stages and a controller. The plurality of output stages are arranged for selectively enabling to generate output voltages and output currents or not according to a plurality of control signals, respectively. The controller is arranged for sensing the output currents of the output stages, and generating the control signals according to the sensed output currents. When the controller generates the control signals to reduce a quantity of the enabled output stages, the controller determines whether a summation of the sensed output currents is greater than a first threshold or not to determine whether to enable more output stages, then a period of time later, the controller selectively determines whether the summation of the sensed output currents is greater than a second threshold or not to determine whether to enable more output stages, wherein the second threshold is lower than the first threshold.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: February 20, 2018
    Assignee: MEDIATEK INC.
    Inventors: Chien-Wei Kuan, Yen-Hsun Hsu, Shan-Fong Hong, Chih-Chen Li, Yu-Te Chao
  • Patent number: 9866060
    Abstract: An apparatus for performing hybrid power control in an electronic device includes a charger positioned in the electronic device, and the charger is arranged for selectively charging a battery of the electronic device. In addition, at least one portion of the charger is implemented within a charger chip, and the charger may include: a plurality of terminals that are positioned on the charger chip; a plurality of switching units, positioned on the charger chip; and at least one control circuit, positioned on the charger chip and coupled to the plurality of switching units. For example, the control circuit may be arranged for controlling the plurality of switching units to allow charging using any of a plurality of adaptors corresponding to different voltages, wherein a first charging path and a second charging path of the charger correspond to a first adaptor and a second adaptor within the plurality of adaptors, respectively.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 9, 2018
    Assignee: MEDIATEK INC.
    Inventors: Nien-Hui Kung, Chih-Wei Lin, Yen-Hsun Hsu
  • Publication number: 20170308153
    Abstract: A power delivery system for a multi-core processor chip includes: a plurality of first power delivery units and a plurality of second power delivery units. The plurality of first power delivery units are coupled to a first power supply device. Each of the first power delivery units is arranged to supply power from the first power supply device to a core of the multi-core processor chip. The plurality of second power delivery units are coupled to a second power supply device. Each of the second power delivery units is arranged to selectively supply power from the second power supply to a core of the multi-core processor chip according to a level of a core voltage required by the core of the multi-core processor chip.
    Type: Application
    Filed: February 20, 2017
    Publication date: October 26, 2017
    Inventors: Chia-Hua Chou, Yen-Hsun Hsu
  • Publication number: 20170310211
    Abstract: The invention provides a regulator for DC-DC hybrid-mode power regulation of an output voltage and a load current. The regulator may include a controller and a back-end circuit. The controller controls the output voltage and the load current by charging a connection node when a driving signal is at an on-level, and stopping charging the connection node when the driving signal is at an off-level. The back-end circuit is coupled to the controller, capable of switching between a first mode and a second mode to control transition of the driving signal by different schemes. The back-end circuit switches from the second mode to the first mode when a mode-switch criterion is satisfied, and whether the mode-switch criterion is satisfied is independent of a measurement of the output voltage.
    Type: Application
    Filed: October 26, 2016
    Publication date: October 26, 2017
    Inventors: Shan-Fong Hong, Chih-Chen Li, Kuan-Yu Chu, Chien-Wei Kuan, Yen-Hsun Hsu
  • Patent number: 9735681
    Abstract: A voltage converter is provided. The voltage converter includes a compensation circuit, a first comparator circuit, a first inductor, a first driver circuit, and a phase-lag circuit. The compensation circuit generates a first compensation signal according to a loading state of the voltage converter. The first comparator circuit compares the first compensation signal and a first reference signal to generate a first comparison signal. The first driver circuit generates a first driving voltage to the first inductor according to the first comparison signal. The phase-lag circuit is coupled between the first comparison circuit and the first driver. The phase-lag circuit modifies a duty of the first comparison signal for changing a first inductor current following the first inductor.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: August 15, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chien-Wei Kuan, Yen-Hsun Hsu, Tun-Shih Chen