Patents by Inventor Merle Jackson Wood, III
Merle Jackson Wood, III 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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Publication number: 20230128943Abstract: Described are computer implemented methods, a system and a power supply amplifier (PSA) that supports compliance testing of the PSA. The power supplies power to a powered device/information handling system. A voltage of synchronous rectifier (SR) gate is measured and compared to a calculated sense voltage at a sense resistor of the PSA. If the sense voltage is zero, received current of the PSA bypasses a first blocking MOSFET and a second blocking MOSFET for over voltage protection. If the sense voltage is not zero, the received current passes through the first blocking MOSFET.Type: ApplicationFiled: October 26, 2021Publication date: April 27, 2023Applicant: Dell Products L.P.Inventors: Wei Cheng Yu, Merle Jackson Wood, III, Geroncio Ong Tan, Chi Che Wu
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Patent number: 11599149Abstract: Systems and method are provided in which docking stations provide power to an Information Handling System (IHS) that is coupled to the docking station and provide the IHS with access to I/O (Input/Output) devices coupled to the docking station. Docking stations include a power circuit receiving a supply of DC power from an external power source. Docking stations also include a docking port used by the docking station to supply DC power to the docked IHS. Docking stations also include an I/O port the receives a connection from an external display, where a DC power input is received via the I/O port from the coupled external display. A controller of the docking station apportions the DC power input received from the coupled external display between operations of the docking station and the DC power supplied to the IHS via the docking port.Type: GrantFiled: August 6, 2021Date of Patent: March 7, 2023Assignee: Dell Products, L.P.Inventors: Srinivas Kamepalli, Merle Jackson Wood, III, Marcin M. Nowak
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Publication number: 20230039167Abstract: Systems and method are provided in which docking stations provide power to an Information Handling System (IHS) that is coupled to the docking station and provide the IHS with access to I/O (Input/Output) devices coupled to the docking station. Docking stations include a power circuit receiving a supply of DC power from an external power source. Docking stations also include a docking port used by the docking station to supply DC power to the docked IHS. Docking stations also include an I/O port the receives a connection from an external display, where a DC power input is received via the I/O port from the coupled external display. A controller of the docking station apportions the DC power input received from the coupled external display between operations of the docking station and the DC power supplied to the IHS via the docking port.Type: ApplicationFiled: August 6, 2021Publication date: February 9, 2023Applicant: Dell Products, L.P.Inventors: Srinivas Kamepalli, Merle Jackson Wood, III, Marcin M. Nowak
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Patent number: 11507140Abstract: A docking station according to embodiments provides power to an Information Handling System (IHS) coupled to the docking station. The docking station includes a first power circuit supporting a first power output according to a power delivery protocol limited to a first power level. The docking station also includes a second power circuit supporting a second power output for providing the input power of the docking station to the IHS. A controller of the docking station determines whether the IHS requires power using the power delivery protocol and selects the operation of the first or second power circuit. The docking station may support dual of such selectable power pathways using a docking cable joined from two individual cables, where each cable provides a separate power and/or data coupling. The docking station thus supports powering devices according to a power delivery protocol or using the input power to the docking station.Type: GrantFiled: October 6, 2021Date of Patent: November 22, 2022Assignee: Dell Products, L.P.Inventors: Merle Jackson Wood, III, Marcin M. Nowak
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Patent number: 11437914Abstract: As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.Type: GrantFiled: February 12, 2020Date of Patent: September 6, 2022Assignee: Dell Products L.P.Inventors: Wei-Cheng Yu, Merle Jackson Wood, III, Tsung-Cheng Liao, Geroncio Ong Tan, James C C Wu, Wen-Yung Chang
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Publication number: 20220026951Abstract: A docking station according to embodiments provides power to an Information Handling System (IHS) coupled to the docking station. The docking station includes a first power circuit supporting a first power output according to a power delivery protocol limited to a first power level. The docking station also includes a second power circuit supporting a second power output for providing the input power of the docking station to the IHS. A controller of the docking station determines whether the IHS requires power using the power delivery protocol and selects the operation of the first or second power circuit. The docking station may support dual of such selectable power pathways using a docking cable joined from two individual cables, where each cable provides a separate power and/or data coupling. The docking station thus supports powering devices according to a power delivery protocol or using the input power to the docking station.Type: ApplicationFiled: October 6, 2021Publication date: January 27, 2022Applicant: Dell Products, L.P.Inventors: Merle Jackson Wood, III, Marcin M. Nowak
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Patent number: 11150698Abstract: A docking station according to embodiments provides power to an Information Handling System (IHS) coupled to the docking station. The docking station includes a first power circuit supporting a first power output according to a power delivery protocol limited to a first power level. The docking station also includes a second power circuit supporting a second power output for providing the input power of the docking station to the IHS. A controller of the docking station determines whether the IHS requires power using the power delivery protocol and selects the operation of the first or second power circuit. The docking station may support dual of such selectable power pathways using a docking cable joined from two individual cables, where each cable provides a separate power and/or data coupling. The docking station thus supports powering devices according to a power delivery protocol or using the input power to the docking station.Type: GrantFiled: May 1, 2019Date of Patent: October 19, 2021Assignee: Dell Products, L.P.Inventors: Merle Jackson Wood, III, Marcin M. Nowak
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Publication number: 20210249961Abstract: As an example, a power supply may provide a particular voltage of multiple voltages based on a power profile provided by a universal serial bus Type C (USB-C) integrated circuit (IC) built-in to a USB-C port of a computing device. A power factor correction (PFC) converter may provide an output voltage that varies according to the power profile. The output voltage of the PFC converter may be used as an input to an inductor-inductor-capacitor (LLC) converter. The LLC converter may produce an output voltage that varies in voltage level proportionally to the PFC converter output voltage. The PFC converter may provide a voltage to the LLC converter that causes the LLC converter to provide an amount of voltage indicated in the power profile sent by the USB-C IC of the computing device.Type: ApplicationFiled: February 12, 2020Publication date: August 12, 2021Inventors: WEI-CHENG YU, MERLE JACKSON WOOD, III, TSUNG-CHENG LIAO, GERONCIO ONG TAN, JAMES CC WU, WEN-YUNG CHANG
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Patent number: 10923910Abstract: In accordance with embodiments of the present disclosure, an information handling system may include at least one information handling resource and a power system for delivering electrical energy to the at least one information handling resource. The power system may include a battery and a direct-current (DC) input for receiving a DC power source for delivering electrical energy to the at least one information handling resource and charging the battery. The power system may be configured to, based on at least one of an operational state the battery and a power mode of the information handling system, configure an input power draw limit via the DC input.Type: GrantFiled: October 26, 2018Date of Patent: February 16, 2021Assignee: Dell Products L.P.Inventors: Rick C. Thompson, Merle Jackson Wood, III, Mohammad Hijazi
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Publication number: 20200348723Abstract: A docking station according to embodiments provides power to an Information Handling System (IHS) coupled to the docking station. The docking station includes a first power circuit supporting a first power output according to a power delivery protocol limited to a first power level. The docking station also includes a second power circuit supporting a second power output for providing the input power of the docking station to the IHS. A controller of the docking station determines whether the IHS requires power using the power delivery protocol and selects the operation of the first or second power circuit. The docking station may support dual of such selectable power pathways using a docking cable joined from two individual cables, where each cable provides a separate power and/or data coupling. The docking station thus supports powering devices according to a power delivery protocol or using the input power to the docking station.Type: ApplicationFiled: May 1, 2019Publication date: November 5, 2020Applicant: Dell Products, L.P.Inventors: Merle Jackson Wood, III, Marcin M. Nowak
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Patent number: 10601306Abstract: A power supply unit for an information handling system, including a filter module configured to filter an AC voltage signal; a rectifier module to rectify the filtered AC voltage signal to generate a DC voltage signal, the DC voltage signal proportional to the AC voltage signal; a voltage regulator module configured to determine that the DC voltage signal is above a threshold voltage level, and in response, clamp the DC voltage signal such that the clamped DC voltage signal i) is not proportional to the AC voltage signal and ii) is less than the threshold voltage level; a capacitor module to average peaks voltages of the clamped DC voltage signal; and a DC/DC converter to convert the averaged DC voltage signal to a converted DC voltage signal, the converted DC voltage signal having a desired DC voltage level.Type: GrantFiled: April 11, 2019Date of Patent: March 24, 2020Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Merle Jackson Wood, III, Chung-Cheng Liao, Chi Che Wu
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Patent number: 10531530Abstract: Systems and methods for controlling a power adaptor Light-Emitting Diode (LED) indicator are described. In some embodiments, a method may include: detecting a coupling of a power adaptor to a voltage source; setting a plurality of transistors in a first configuration, where the first configuration provides power an LED coupled to the power adaptor via a cable; detecting a de-coupling of the power adaptor from the voltage source; and setting the plurality of transistors in a second configuration, where the second configuration ceases to provide power to the LED.Type: GrantFiled: October 3, 2017Date of Patent: January 7, 2020Assignee: Dell Products, L.P.Inventors: Wei-Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Wen-Yung Chang
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Publication number: 20190104586Abstract: Systems and methods for controlling a power adaptor Light-Emitting Diode (LED) indicator are described. In some embodiments, a method may include: detecting a coupling of a power adaptor to a voltage source; setting a plurality of transistors in a first configuration, where the first configuration provides power an LED coupled to the power adaptor via a cable; detecting a de-coupling of the power adaptor from the voltage source; and setting the plurality of transistors in a second configuration, where the second configuration ceases to provide power to the LED.Type: ApplicationFiled: October 3, 2017Publication date: April 4, 2019Applicant: Dell Products, L.P.Inventors: Wei-Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Wen-Yung Chang
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Publication number: 20190067938Abstract: In accordance with embodiments of the present disclosure, an information handling system may include at least one information handling resource and a power system for delivering electrical energy to the at least one information handling resource. The power system may include a battery and a direct-current (DC) input for receiving a DC power source for delivering electrical energy to the at least one information handling resource and charging the battery. The power system may be configured to, based on at least one of an operational state the battery and a power mode of the information handling system, configure an input power draw limit via the DC input.Type: ApplicationFiled: October 26, 2018Publication date: February 28, 2019Applicant: Dell Products L.P.Inventors: Rick C. THOMPSON, Merle Jackson WOOD, III, Mohammad HIJAZI
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Patent number: 10148087Abstract: In accordance with embodiments of the present disclosure, an information handling system may include at least one information handling resource and a power system for delivering electrical energy to the at least one information handling resource. The power system may include a battery and a direct-current (DC) input for receiving a DC power source for delivering electrical energy to the at least one information handling resource and charging the battery. The power system may be configured to, based on at least one of an operational state the battery and a power mode of the information handling system, configure an input power draw limit via the DC input.Type: GrantFiled: June 24, 2014Date of Patent: December 4, 2018Assignee: Dell Products L.P.Inventors: Rick C. Thompson, Merle Jackson Wood, III, Mohammad Hijazi
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Patent number: 9985538Abstract: In accordance with embodiments of the present disclosure, a switch mode power supply may include a transformer, a controller configured to generate a periodic switching signal, a switching transistor coupled between a sense node and the transformer, primarily configured to prevent or permit current flow in the transformer primary winding in accordance with the switching signal, a sense resistor coupled to the switching transistor at a sense node, and a limit circuit configured to obtain a voltage of the sense node at a particular point of the switching period as an indicator of the primary winding current, detect a duration of a demagnetizing interval, and generate a limit signal, based on the sense node voltage and the demagnetizing interval, indicating a power supply output current exceeding a limit threshold.Type: GrantFiled: October 16, 2017Date of Patent: May 29, 2018Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Yan Yang, Keith J. Kasprzak
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Publication number: 20180054127Abstract: In accordance with embodiments of the present disclosure, a switch mode power supply may include a transformer, a controller configured to generate a periodic switching signal, a switching transistor coupled between a sense node and the transformer, primarily configured to prevent or permit current flow in the transformer primary winding in accordance with the switching signal, a sense resistor coupled to the switching transistor at a sense node, and a limit circuit configured to obtain a voltage of the sense node at a particular point of the switching period as an indicator of the primary winding current, detect a duration of a demagnetizing interval, and generate a limit signal, based on the sense node voltage and the demagnetizing interval, indicating a power supply output current exceeding a limit threshold.Type: ApplicationFiled: October 16, 2017Publication date: February 22, 2018Applicant: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Yan Yang, Keith J. Kasprzak
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Patent number: 9843265Abstract: A zero voltage switching method for a flyback converter featuring a transformer with first and second primary windings and corresponding turns ratios, N1 and N2, includes rectifying and filtering an AC signal to produce a primary DC voltage. A voltage level signal indicating whether the primary DC voltage falls within a particular voltage range is generated. The voltage level signal is used to select a particular primary winding from either the first primary winding or the second primary winding. A PWM controller corresponding to the particular primary winding is activated and an output of the particular PWM controller performs zero voltage switching of a gate terminal of the applicable main switching transistor. A duty cycle of the main switching transistor is maintained within a range of approximately 50% to approximately 60% in accordance with the turns ratio and the primary DC voltage to achieve a desired output voltage.Type: GrantFiled: December 17, 2015Date of Patent: December 12, 2017Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Wen-Yung Chang, Merle Jackson Wood, III, Tun-Chieh Liang
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Patent number: 9793815Abstract: In accordance with embodiments of the present disclosure, a switch mode power supply may include a transformer, a controller configured to generate a periodic switching signal, a switching transistor coupled between a sense node and the transformer, primarily configured to prevent or permit current flow in the transformer primary winding in accordance with the switching signal, a sense resistor coupled to the switching transistor at a sense node, and a limit circuit configured to obtain a voltage of the sense node at a particular point of the switching period as an indicator of the primary winding current, detect a duration of a demagnetizing interval, and generate a limit signal, based on the sense node voltage and the demagnetizing interval, indicating a power supply output current exceeding a limit threshold.Type: GrantFiled: July 24, 2015Date of Patent: October 17, 2017Assignee: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Merle Jackson Wood, III, Yan Yang, Keith J. Kasprzak
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Publication number: 20170179831Abstract: A zero voltage switching method for a flyback converter featuring a transformer with first and second primary windings and corresponding turns ratios, N1 and N2, includes rectifying and filtering an AC signal to produce a primary DC voltage. A voltage level signal indicating whether the primary DC voltage falls within a particular voltage range is generated. The voltage level signal is used to select a particular primary winding from either the first primary winding or the second primary winding. A PWM controller corresponding to the particular primary winding is activated and an output of the particular PWM controller performs zero voltage switching of a gate terminal of the applicable main switching transistor. A duty cycle of the main switching transistor is maintained within a range of approximately 50% to approximately 60% in accordance with the turns ratio and the primary DC voltage to achieve a desired output voltage.Type: ApplicationFiled: December 17, 2015Publication date: June 22, 2017Applicant: Dell Products L.P.Inventors: Wei Cheng Yu, Tsung-Cheng Liao, Wen-Yung Chang, Merle Jackson Wood, III, Tun-Chieh Liang