Patents by Inventor Chung-Ping Ku
Chung-Ping Ku 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).
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Patent number: 11677314Abstract: A control circuit for a plurality of metal-oxide semiconductor field-effect transistors (MOSFETs) in a bridge circuit for rectifying an alternating current (AC) input to generate a direct-current (DC) output includes first and second high side controls and first and second low side controls for providing gate voltage signals to respective MOSFETs in the bridge circuit. Dead time controls are provided for establishing dead time intervals between activation of complementary MOSFETs in the bridge circuit. The low side controls provide gate voltage signals having sloped edges and the dead time controls include Zener diodes having reverse bias thresholds for determining the duration of the dead time intervals.Type: GrantFiled: October 26, 2021Date of Patent: June 13, 2023Assignee: Hewlett Packard Enterprise Development LPInventors: Gary Lin, Chung-Ping Ku, Nowa Wang
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Publication number: 20230127621Abstract: A control circuit for a plurality of metal-oxide semiconductor field-effect transistors (MOSFETs) in a bridge circuit for rectifying an alternating current (AC) input to generate a direct-current (DC) output includes first and second high side controls and first and second low side controls for providing gate voltage signals to respective MOSFETs in the bridge circuit. Dead time controls are provided for establishing dead time intervals between activation of complementary MOSFETs in the bridge circuit. The low side controls provide gate voltage signals having sloped edges and the dead time controls include Zener diodes having reverse bias thresholds for determining the duration of the dead time intervals.Type: ApplicationFiled: October 26, 2021Publication date: April 27, 2023Inventors: Gary Lin, Chung-Ping Ku, Nowa Wang
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Patent number: 10819139Abstract: A power supply includes a power converter and a battery. A logic circuit controls division of output of power, between the power converter and the battery, to an output of the power supply.Type: GrantFiled: September 29, 2016Date of Patent: October 27, 2020Assignee: Hewlett Packard Enterprise Development LPInventors: Chung-Ping Ku, Po-Wen Hsueh
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Patent number: 10250275Abstract: According to some examples, systems and methods are provided for voltage sampling using one or more analog-to-digital converters (ADCs) to sense divided portions of a sampled voltage (e.g., of an output signal), using the one or more analog-to-digital converters to provide a plurality of digital values representative of those divided portions, and combining the plurality of digital values to produce a total digital value representative of the sampled voltage. Such systems and methods can achieve a high resolution for the total digital value while permitting use of ADCs that have a resolution lower than would otherwise be required to achieve the high resolution.Type: GrantFiled: July 2, 2015Date of Patent: April 2, 2019Assignee: HEWLETT PACKARD ENTERPRISES DEVELOPMENT LPInventors: Chung-Ping Ku, Mohamed Amin Bemat
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Publication number: 20180254697Abstract: An example device in accordance with an aspect of the present disclosure includes a converter to convert an input voltage to an output voltage. The converter includes an input connector that occupies greater than one third of a frontal area of the converter.Type: ApplicationFiled: March 2, 2017Publication date: September 6, 2018Inventors: CHUNG-PING KU, Gary Kai Hsien Wang, David Mohr
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Patent number: 10069407Abstract: An example device in accordance with an aspect of the present disclosure includes a converter to convert an input voltage to an output voltage. The converter includes an input connector that occupies greater than one third of a frontal area of the converter.Type: GrantFiled: March 2, 2017Date of Patent: September 4, 2018Assignee: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LPInventors: Chung-Ping Ku, Gary Kai Hsien Wang, David Mohr
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Publication number: 20180097526Abstract: According to some examples, systems and methods are provided for voltage sampling using one or more analog-to-digital converters (ADCs) to sense divided portions of a sampled voltage (e.g., of an output signal), using the one or more analog-to-digital converters to provide a plurality of digital values representative of those divided portions, and combining the plurality of digital values to produce a total digital value representative of the sampled voltage. Such systems and methods can achieve a high resolution for the total digital value while permitting use of ADCs that have a resolution lower than would otherwise be required to achieve the high resolution.Type: ApplicationFiled: July 2, 2015Publication date: April 5, 2018Inventors: Chung-Ping Ku, Mohamed Amin Bemat
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Publication number: 20180090984Abstract: A power supply includes a power converter and a battery. A logic circuit controls division of output of power, between the power converter and the battery, to an output of the power supply.Type: ApplicationFiled: September 29, 2016Publication date: March 29, 2018Inventors: Chung-Ping Ku, Po-Wen Hsueh
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Patent number: 9843268Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: GrantFiled: April 9, 2014Date of Patent: December 12, 2017Assignee: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.Inventors: Chung-Ping Ku, Wei-Chi Huang
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Patent number: 9843253Abstract: A voltage converter includes a voltage conversion circuit, a pulse width modulation (PWM) signal generating module, a feedback controlling module, and a subtractor. The voltage conversion circuit is configured to convert an input voltage to an output voltage according to a PWM signal. The PWM signal generating module is configured to generate the PWM signal according to a control signal. The feedback controlling module is configured to generate the control signal according to a feedback signal. The subtractor is configured to subtract a first reference voltage by the output voltage, to generate the feedback signal. The phase of an AC component of the first reference voltage is substantially opposite to the phase of the input voltage.Type: GrantFiled: September 11, 2014Date of Patent: December 12, 2017Assignee: DELTA ELECTRONICS, INC.Inventors: Hsien-Feng Hung, Yi-Lan Yang, Chung-Ping Ku
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Patent number: 9490057Abstract: An integrated magnetic module includes a first auxiliary circuit board, a second auxiliary circuit board, a first transformer, a second transformer and at least one inductor. The second auxiliary circuit board and the first auxiliary circuit board are arranged side by side. The first transformer is disposed on the first auxiliary circuit board. The second transformer is disposed on the second auxiliary circuit board. The at least one inductor is arranged between the first transformer and second transformer, and electrically connected with the first auxiliary circuit board and the second auxiliary circuit board.Type: GrantFiled: November 14, 2014Date of Patent: November 8, 2016Assignee: DELTA ELECTRONICS, INC.Inventors: Ssu-Wei Fu, Yi-Hsin Leu, Chung-Ping Ku, Der-Min Liu
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Publication number: 20160086711Abstract: An integrated magnetic module includes a first auxiliary circuit board, a second auxiliary circuit board, a first transformer, a second transformer and at least one inductor. The second auxiliary circuit board and the first auxiliary circuit board are arranged side by side. The first transformer is disposed on the first auxiliary circuit board. The second transformer is disposed on the second auxiliary circuit board. The at least one inductor is arranged between the first transformer and second transformer, and electrically connected with the first auxiliary circuit board and the second auxiliary circuit board.Type: ApplicationFiled: November 14, 2014Publication date: March 24, 2016Inventors: Ssu-Wei Fu, Yi-Hsin Leu, Chung-Ping Ku, Der-Min Liu
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Patent number: 9246399Abstract: A power supply system includes a first power module for outputting a first voltage and a second power module for outputting a second voltage. The first power module includes a first switch element, and a second switch element. The second power module includes a third switch element, and a fourth switch element. When the first power module is in a working state and the second power module is then plugged into the power supply system in a hot-swappable manner, only if a phase difference or a voltage difference between the first power source and the second power source is lower than a threshold value, the second switch element and the fourth switch element are controlled to be turned on. Subsequently, if the second voltage is higher than the first voltage, the third switch element is controlled to be turned on.Type: GrantFiled: March 18, 2013Date of Patent: January 26, 2016Assignee: DELTA ELECTRONICS, INC.Inventors: Chung-Ping Ku, Yi-Hsin Leu
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Publication number: 20150357902Abstract: A voltage converter includes a voltage conversion circuit, a pulse width modulation (PWM) signal generating module, a feedback controlling module, and a subtractor. The voltage conversion circuit is configured to convert an input voltage to an output voltage according to a PWM signal. The PWM signal generating module is configured to generate the PWM signal according to a control signal. The feedback controlling module is configured to generate the control signal according to a feedback signal. The subtractor is configured to subtract a first reference voltage by the output voltage, to generate the feedback signal. The phase of an AC component of the first reference voltage is substantially opposite to the phase of the input voltage.Type: ApplicationFiled: September 11, 2014Publication date: December 10, 2015Inventors: Hsien-Feng HUNG, Yi-Lan YANG, Chung-Ping KU
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Patent number: 9075092Abstract: A method for obtaining electric power information is applied with a power supply and includes following steps of coupling the power supply to an AC power source; detecting a voltage of the AC power source to obtain a first voltage; detecting a frequency of the AC power source to obtain a first frequency; and estimating an electric power information of the power supply in accordance with the first voltage and the first frequency. The electric power information includes an input current, an input voltage or an input power outputted from the AC power source to the power supply.Type: GrantFiled: December 12, 2012Date of Patent: July 7, 2015Assignee: DELTA ELECTRONICS, INC.Inventors: Sheng-Hsien Lin, Chung-Ping Ku
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Publication number: 20140218990Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: Alpha and Omega Semiconductor IncorporatedInventors: Chung-Ping Ku, Wei-Chi Huang
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Publication number: 20140203651Abstract: A power supply system includes a first power module for outputting a first voltage and a second power module for outputting a second voltage. The first power module includes a first switch element, and a second switch element. The second power module includes a third switch element, and a fourth switch element. When the first power module is in a working state and the second power module is then plugged into the power supply system in a hot-swappable manner, only if a phase difference or a voltage difference between the first power source and the second power source is lower than a threshold value, the second switch element and the fourth switch element are controlled to be turned on. Subsequently, if the second voltage is higher than the first voltage, the third switch element is controlled to be turned on.Type: ApplicationFiled: March 18, 2013Publication date: July 24, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Chung-Ping Ku, Yi-Hsin Leu
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Patent number: 8787045Abstract: A control method is used in a power factor corrector. Firstly, a current command signal from a computing circuit is received. Then, the current command signal is compared with an input signal of the power conversion circuit, so that a current error signal is generated. If the power factor corrector is operated in a transition interval between the first mode and the second mode, an addition operation is performed on the unadjusted current error signal, a feedforward signal and the adjusted current error signal, thereby generating a current control signal. A switch control signal is generated according to the current control signal. A switching element of a power conversion circuit is controlled according to the switch control signal. Consequently, the harmonic distortion of the input current is inhibited.Type: GrantFiled: October 11, 2013Date of Patent: July 22, 2014Assignee: Delta Electronics, Inc.Inventors: Hsien-Feng Hung, Yi-Lan Yang, Chung-Ping Ku
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Patent number: 8716985Abstract: A power factor correction device comprises a power stage circuit converting input alternating current voltage into input current according to a pulse width modulation signal and outputs the input current to a load generating output voltage on the load, and sampling the input current outputting a correcting current; a current compensating circuit receiving and comparing the correcting current with a reference current signal generating a compensating current signal; a voltage compensating circuit receiving and comparing the output voltage with a reference voltage generating a compensating voltage signal; a multiplication amplifier receiving the compensating current signal and the compensating voltage signal generating an updated reference current signal by multiplying the compensating current signal with the compensating voltage signal; and a pulse width modulation converter receiving the compensating current signal and the compensating voltage signal generating the pulse width modulation signal to synchronizeType: GrantFiled: February 29, 2012Date of Patent: May 6, 2014Assignee: Alpha & Omega Semiconductor, Inc.Inventors: Chung-Ping Ku, Wei-Chi Huang
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Publication number: 20140028284Abstract: A method for obtaining electric power information is applied with a power supply and includes following steps of coupling the power supply to an AC power source; detecting a voltage of the AC power source to obtain a first voltage; detecting a frequency of the AC power source to obtain a first frequency; and estimating an electric power information of the power supply in accordance with the first voltage and the first frequency. The electric power information includes an input current, an input voltage or an input power outputted from the AC power source to the power supply.Type: ApplicationFiled: December 12, 2012Publication date: January 30, 2014Applicant: DELTA ELECTRONICS, INC.Inventors: Sheng-Hsien LIN, Chung-Ping KU