Patents by Inventor Jian-Rong Huang
Jian-Rong Huang 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: 12191767Abstract: A feedback loop circuit of a voltage regulator includes a loadline and a compensation circuit. The loadline generates a feedback signal according to a sensed current signal that provides information of an inductor current of the voltage regulator, and outputs the feedback signal to a controller circuit of the voltage regulator for regulating an output voltage of the voltage regulator. The compensation circuit generates a compensation signal to compensate for a deviation of the output voltage, wherein the feedback signal generated from the loadline is affected by the compensation signal.Type: GrantFiled: April 13, 2022Date of Patent: January 7, 2025Assignee: MediaTek Singapore Pte. Ltd.Inventors: Man Pun Chan, Hao-Ping Hong, Yung-Chih Yen, Chien-Hui Wang, Cheng-Hsuan Fan, Jian-Rong Huang
-
Patent number: 11860660Abstract: A sub-circuit of a voltage regulator includes a load condition detection circuit and a controllable circuit. The load condition detection circuit is arranged to detect a load transient frequency of a load powered by the voltage regulator, and generate a control signal according to a detection result of the load transient frequency. The controllable circuit is arranged to receive the control signal, wherein an operational behavior of the controllable circuit dynamically changes in response to the control signal.Type: GrantFiled: April 29, 2022Date of Patent: January 2, 2024Assignee: MediaTek Singapore Pte. Ltd.Inventors: Man Pun Chan, Hao-Ping Hong, Yung-Chih Yen, Chien-Hui Wang, Cheng-Hsuan Fan, Jian-Rong Huang
-
Publication number: 20230408815Abstract: A near-eye display device includes a camera module, a display module and a rotating module. The camera module is configured for obtaining an image information along a direction of a first optical axis. The display module is configured for transmitting an image light of virtual information to a human eye along a second optical axis. The rotating module is configured for controlling the rotation of the camera module to change a position of the first optical axis, so as to switch the near-eye display device between a state of close-up view and a state of distant view. In the state of distant view, an angle between the first optical axis and the second optical axis is 25°. In the state of close-up view, the angle between the first optical axis and the second optical axis is less than or equal to 13°.Type: ApplicationFiled: August 30, 2023Publication date: December 21, 2023Inventor: JIAN-RONG HUANG
-
Publication number: 20220393587Abstract: A feedback loop circuit of a voltage regulator includes a loadline and a compensation circuit. The loadline generates a feedback signal according to a sensed current signal that provides information of an inductor current of the voltage regulator, and outputs the feedback signal to a controller circuit of the voltage regulator for regulating an output voltage of the voltage regulator. The compensation circuit generates a compensation signal to compensate for a deviation of the output voltage, wherein the feedback signal generated from the loadline is affected by the compensation signal.Type: ApplicationFiled: April 13, 2022Publication date: December 8, 2022Applicant: MediaTek Singapore Pte. Ltd.Inventors: Man Pun Chan, Hao-Ping Hong, Yung-Chih Yen, Chien-Hui Wang, Cheng-Hsuan Fan, Jian-Rong Huang
-
Publication number: 20220390973Abstract: A sub-circuit of a voltage regulator includes a load condition detection circuit and a controllable circuit. The load condition detection circuit is arranged to detect a load transient frequency of a load powered by the voltage regulator, and generate a control signal according to a detection result of the load transient frequency. The controllable circuit is arranged to receive the control signal, wherein an operational behavior of the controllable circuit dynamically changes in response to the control signal.Type: ApplicationFiled: April 29, 2022Publication date: December 8, 2022Applicant: MediaTek Singapore Pte. Ltd.Inventors: Man Pun Chan, Hao-Ping Hong, Yung-Chih Yen, Chien-Hui Wang, Cheng-Hsuan Fan, Jian-Rong Huang
-
Patent number: 9859783Abstract: A voltage converter controller, adapted to a voltage converter circuit, includes a power switch controller and a dead-time determining circuit. The power switch controller receives a PWM signal and outputs a high-side control signal and a low-side control signal accordingly to control the conduction and cut-off of a high-side power switch and a low-side power switch respectively. When the power switch controller starts to control the low-side power switch cut-off, after a first dead-time, the power switch controller starts to control the high-side power switch conducting. The dead-time determining circuit detects a current of the low-side power switch to be larger or smaller than a threshold current when the low-side power switch is conducted, and determines the first dead-time to be a first value or a second value accordingly.Type: GrantFiled: November 8, 2013Date of Patent: January 2, 2018Assignee: RICHTEK TECHNOLOGY CORPInventors: Yu-Lun Chang, Yuan-Wen Hsiao, Jian-Rong Huang
-
Publication number: 20170366080Abstract: A voltage converter controller, adapted to a voltage converter circuit, includes a power switch controller and a dead-time determining circuit. The power switch controller receives a PWM signal and outputs a high-side control signal and a low-side control signal accordingly to control the conduction and cut-off of a high-side power switch and a low-side power switch respectively. When the power switch controller starts to control the low-side power switch cut-off, after a first dead-time, the power switch controller starts to control the high-side power switch conducting. The dead-time determining circuit detects a current of the low-side power switch to be larger or smaller than a threshold current when the low-side power switch is conducted, and determines the first dead-time to be a first value or a second value accordingly.Type: ApplicationFiled: November 8, 2013Publication date: December 21, 2017Applicant: RICHTEK TECHNOLOGY CORPInventors: Yu-Lun Chang, Yuan-Wen Hsiao, Jian-Rong Huang
-
Patent number: 9287774Abstract: A power converter control circuit includes a feedback circuit and a pulse width modulation signal generating circuit for configuring a power stage circuit to provide power to a load. The feedback circuit generates a first gain signal and a second gain signal according to an output voltage sensing signal coupled with the load. The feedback circuit further generates a feedback signal according to the first gain signal and the second gain signal. The pulse width modulation signal generating circuit configures the operation of the power stage circuit according to the feedback signal and a reference signal. Moreover, the feedback circuit and the pulse width modulation signal generating circuit are configured on the same integrated circuit package.Type: GrantFiled: March 11, 2014Date of Patent: March 15, 2016Assignee: RICHTEK TECHNOLOGY CORPORATIONInventors: Ching-Jan Chen, Shao-Hung Lu, Jian-Rong Huang
-
Patent number: 8917072Abstract: A control circuit and method for a PWM voltage regulator combine a high frequency feedback technique with a constant on-time or constant off-time topology to improve the transient performance of the PWM voltage regulator. The PWM voltage regulator generates a constant on-time or constant off-time depending on a current for generating a PWM signal, and dynamically adjusts the current according to the droop-voltage at its output during a transient period. Therefore, the PWM voltage regulator boosts its transient response without any threshold for load step detection.Type: GrantFiled: June 1, 2012Date of Patent: December 23, 2014Assignee: Richtek Technology Corp.Inventors: Yi-Cheng Wan, Jian-Rong Huang, Wen-Wei Chen
-
Patent number: 8917077Abstract: The present invention provides a multi-phase switching regulator and a droop circuit for use in the multi-phase switching regulator. The multi-phase switching regulator generates pulse width modulation (PWM) signals according to an output voltage and a droop signal, to drive a plurality of switching sets to convert an input voltage to the output voltage. The droop circuit detects the sum of the currents generated by the plurality of switching sets and provides the droop signal which is related to the sum of the currents to the multi-phase switching regulator. The droop signal can be used for over current protection (OCP) or for the droop control.Type: GrantFiled: July 9, 2013Date of Patent: December 23, 2014Assignee: Richtek Technology CorporationInventors: Yu-Ta Lin, Jian-Rong Huang, Yi-Cheng Wan, Chien-Hui Wang, Yuan-Wen Hsiao
-
Patent number: 8836307Abstract: In a PWM signal generation method of a voltage regulator, an output sense signal, a first ramp signal and a second ramp signal are provided. A first time point of the first ramp signal crossing with the output sense signal is used to determine a start point of an ON-time of a PWM signal, and a second time point of the second ramp signal crossing with the output sense signal is used to determine an end point of the ON-time of the PWM signal. Moreover, the first ramp signal is reset to a reference voltage at the first time point and then maintained at the reference voltage, and further ramps down starting from the end point of the ON-time. The second ramp signal ramps up starting from the start point of the ON-time, and then is reset to a preset voltage at the second time point.Type: GrantFiled: March 2, 2011Date of Patent: September 16, 2014Assignee: Richtek Technology Corp.Inventors: Yi-Cheng Wan, Jian-Rong Huang, Chien-Hui Wang, Cheng-Feng Chung
-
Publication number: 20140253084Abstract: A power converter control circuit includes a feedback circuit and a pulse width modulation signal generating circuit for configuring a power stage circuit to provide power to a load. The feedback circuit generates a first gain signal and a second gain signal according to an output voltage sensing signal coupled with the load. The feedback circuit further generates a feedback signal according to the first gain signal and the second gain signal. The pulse width modulation signal generating circuit configures the operation of the power stage circuit according to the feedback signal and a reference signal. Moreover, the feedback circuit and the pulse width modulation signal generating circuit are configured on the same integrated circuit package.Type: ApplicationFiled: March 11, 2014Publication date: September 11, 2014Applicant: Richtek Technology CorporationInventors: Ching-Jan CHEN, Shao-Hung LU, Jian-Rong HUANG
-
Patent number: 8766617Abstract: An exemplary method for improving voltage identification (VID) transient response is adapted to a voltage regulator and includes steps of: continuously sensing an inductor current of the voltage regulator to thereby output a current sense signal; during a steady state operation period, sampling the current sense signal to thereby obtain a sampling result for providing a droop control signal; after entering a VID transient period from the steady state operation period, holding the sampling result for providing the droop control signal; and taking the droop control signal as a consideration factor of producing a pulse width modulation signal to regulate an output voltage of the voltage regulator.Type: GrantFiled: February 11, 2011Date of Patent: July 1, 2014Assignee: Richtek Technology CorpInventors: Yi-Cheng Wan, Jian-Rong Huang, Cheng-Feng Chung, Hung-Chun Peng
-
Patent number: 8710815Abstract: The present invention discloses a voltage regulator, and a control circuit and a control method therefor. The method for controlling a voltage regulator comprises: receiving a dynamic voltage identification signal which instructs the voltage regulator to change its output voltage to a target voltage, and generating a compensation signal to shorten an interval for the output voltage of the voltage regulator to reach the target voltage.Type: GrantFiled: June 14, 2011Date of Patent: April 29, 2014Assignee: Richtek Technology Corporation, R.O.C.Inventors: Chieh-Min Feng, Ting-Hung Wang, Chung-Sheng Cheng, Jian-Rong Huang
-
Publication number: 20140021929Abstract: The present invention provides a multi-phase switching regulator and a droop circuit for use in the multi-phase switching regulator. The multi-phase switching regulator generates pulse width modulation (PWM) signals according to an output voltage and a droop signal, to drive a plurality of switching sets to convert an input voltage to the output voltage. The droop circuit detects the sum of the currents generated by the plurality of switching sets and provides the droop signal which is related to the sum of the currents to the multi-phase switching regulator. The droop signal can be used for over current protection (OCP) or for the droop control.Type: ApplicationFiled: July 9, 2013Publication date: January 23, 2014Applicant: RICHTEK TECHNOLOGY CORPORATIONInventors: Yu-Ta Lin, Jian-Rong Huang, Yi-Cheng Wan, Chien-Hui Wang, Yuan-Wen Hsiao
-
Patent number: 8508206Abstract: The present invention discloses an adaptive constant ON time adjustment circuit, which generates a square wave signal having a constant normal ON time during normal operation, for controlling a power stage circuit to convert an input voltage to an output voltage. When the output voltage is shifted from low to high, during the transient period, the ON time is adjusted longer; and when the output voltage is shifted from high to low, during the transient period, the ON time is adjusted shorter.Type: GrantFiled: December 3, 2010Date of Patent: August 13, 2013Assignee: Richteck Technology CorporationInventors: Yi-Cheng Wan, Hung-Chun Peng, Jian-Rong Huang, Kuo-Lung Tseng
-
Patent number: 8502515Abstract: A multiphase DC-DC converting circuit for providing power to a load is disclosed, having power stage circuits, channel current converting circuits, current detecting circuits, a transconductance amplifier circuit, a comparator circuit, and a channel current balance circuit. The current detecting circuits detect current signals of current channels, and the transconductance amplifier circuit and the comparator circuit are coupled with the current detecting circuits to receive the voltage difference across a resistor, and to generate a total current detecting signal provided to the load. The channel current converting circuit is coupled with the current detecting circuits to generate channel current detecting signals. The channel current balance circuit is coupled with the comparator circuit, the transconductance amplifier circuit and the channel current converting circuit to balance the current signals of the current channels.Type: GrantFiled: February 26, 2013Date of Patent: August 6, 2013Assignee: Richtek Technology CorporationInventors: Yi-Cheng Wan, Jian-Rong Huang, Hung-Chun Peng
-
Patent number: 8358113Abstract: A multi-phase power converter with constant on-time control includes a plurality of channels to convert an input voltage into an output voltage, and each of the channels is driven by a control signal. When all channel currents of the channels are balanced, each of the control signals remains a constant on-time. When the channel currents are imbalanced, the on-times of the control signals are modulated according to the difference between each channel current and a target value for current balance between the channels.Type: GrantFiled: August 4, 2009Date of Patent: January 22, 2013Assignee: Richtek Technology Corp.Inventors: Chung-Sheng Cheng, Chung-Shu Li, Chia-Jung Lee, Jian-Rong Huang
-
Publication number: 20120306586Abstract: A control circuit and method for a PWM voltage regulator combine a high frequency feedback technique with a constant on-time or constant off-time topology to improve the transient performance of the PWM voltage regulator. The PWM voltage regulator generates a constant on-time or constant off-time depending on a current for generating a PWM signal, and dynamically adjusts the current according to the droop-voltage at its output during a transient period. Therefore, the PWM voltage regulator boosts its transient response without any threshold for load step detection.Type: ApplicationFiled: June 1, 2012Publication date: December 6, 2012Inventors: Yi-Cheng WAN, Jian-Rong Huang, Wen-Wei Chen
-
Publication number: 20120153913Abstract: An exemplary method for improving voltage identification (VID) transient response is adapted to a voltage regulator and includes steps of: continuously sensing an inductor current of the voltage regulator to thereby output a current sense signal; during a steady state operation period, sampling the current sense signal to thereby obtain a sampling result for providing a droop control signal; after entering a VID transient period from the steady state operation period, holding the sampling result for providing the droop control signal; and taking the droop control signal as a consideration factor of producing a pulse width modulation signal to regulate an output voltage of the voltage regulator.Type: ApplicationFiled: February 11, 2011Publication date: June 21, 2012Applicant: RICHTEK TECHNOLOGY CORPInventors: Yi-Cheng Wan, Jian-Rong Huang, Cheng-Feng Chung, Hung-Chun Peng