Patents by Inventor Hector Ivan Oporta
Hector Ivan Oporta 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: 11606031Abstract: Power supply circuit having low quiescent current for a bypass mode. One example power supply circuit generally includes a transistor; a switching node coupled to a source of the transistor; a power supply rail; a capacitor having a first terminal coupled to the power supply rail and having a second terminal coupled to the switching node; a gate driver having an output coupled to a gate of the transistor, having a first power input coupled to the power supply rail, and having a second power input coupled to the switching node; logic having a first input coupled to the first terminal of the capacitor, having a second input coupled to the second terminal of the capacitor, and having a first output; and a pullup circuit having a control input coupled to a second output of the logic and having an output coupled to the gate of the transistor.Type: GrantFiled: January 31, 2022Date of Patent: March 14, 2023Assignee: QUALCOMM IncorporatedInventors: Hector Ivan Oporta, Daragh MacGabhann, Chunping Song, Yi Wang, Ji Hoon Hyun
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Patent number: 11545897Abstract: Techniques and apparatus for controlling gate drivers of a switched-mode power supply (SMPS) circuit—such as a three-level buck converter, a divide-by-two charge pump, or an adaptive combination power supply circuit capable of switching therebetween—in a power-saving mode (e.g., a pulse-skipping mode). During such a power-saving mode in which a capacitor of a charge pump is disconnected from at least one power supply rail (e.g., first and second input nodes of the charge pump) and is coupled to power terminals of one or more drivers of the SMPS circuit, the capacitor is temporarily disconnected from the power terminals and temporarily coupled to the at least one power supply rail (e.g., for a few microseconds).Type: GrantFiled: September 15, 2020Date of Patent: January 3, 2023Assignee: QUALCOMM IncorporatedInventors: Ta-Tung Yen, Guoyong Guo, Chunping Song, Hector Ivan Oporta
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Patent number: 11502599Abstract: Techniques and apparatus for supplying power to gate drivers of a switched-mode power supply (SMPS) circuit. One example power supply circuit generally includes a SMPS circuit having a first input voltage node and a second input voltage node, and a charge pump. The charge pump generally includes a first capacitive element having a first terminal and a second terminal; a first switch coupled between a first input node of the charge pump and the first terminal of the first capacitive element; a second switch coupled between the second terminal of the first capacitive element and a second input node of the charge pump; a third switch coupled between the first terminal of the first capacitive element and the first input voltage node of the SMPS circuit; and a fourth switch coupled between the second terminal of the first capacitive element and the second input voltage node of the SMPS circuit.Type: GrantFiled: September 15, 2020Date of Patent: November 15, 2022Assignee: QUALCOMM IncorporatedInventors: Ta-Tung Yen, Chunping Song, Guoyong Guo, Hector Ivan Oporta, Ahmed Abdelmoaty
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Publication number: 20210083572Abstract: Techniques and apparatus for controlling gate drivers of a switched-mode power supply (SMPS) circuit—such as a three-level buck converter, a divide-by-two charge pump, or an adaptive combination power supply circuit capable of switching therebetween—in a power-saving mode (e.g., a pulse-skipping mode). During such a power-saving mode in which a capacitor of a charge pump is disconnected from at least one power supply rail (e.g., first and second input nodes of the charge pump) and is coupled to power terminals of one or more drivers of the SMPS circuit, the capacitor is temporarily disconnected from the power terminals and temporarily coupled to the at least one power supply rail (e.g., for a few microseconds).Type: ApplicationFiled: September 15, 2020Publication date: March 18, 2021Inventors: Ta-Tung YEN, Guoyong GUO, Chunping SONG, Hector Ivan OPORTA
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Publication number: 20210083573Abstract: Techniques and apparatus for supplying power to gate drivers of a switched-mode power supply (SMPS) circuit. One example power supply circuit generally includes a SMPS circuit having a first input voltage node and a second input voltage node, and a charge pump. The charge pump generally includes a first capacitive element having a first terminal and a second terminal; a first switch coupled between a first input node of the charge pump and the first terminal of the first capacitive element; a second switch coupled between the second terminal of the first capacitive element and a second input node of the charge pump; a third switch coupled between the first terminal of the first capacitive element and the first input voltage node of the SMPS circuit; and a fourth switch coupled between the second terminal of the first capacitive element and the second input voltage node of the SMPS circuit.Type: ApplicationFiled: September 15, 2020Publication date: March 18, 2021Inventors: Ta-Tung YEN, Chunping SONG, Guoyong GUO, Hector Ivan OPORTA, Ahmed ABDELMOATY
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Publication number: 20210036617Abstract: Aspects of the present disclosure generally relate to multi-mode regulators. For example, the multi-mode regulator may include a first transistor having a first terminal coupled to an input voltage and a second terminal coupled to an output of the regulator, a second transistor having a first terminal coupled to the second terminal of the first transistor and a second terminal coupled to a reference potential, pulse width modulation (PWM) control logic having outputs coupled to gates of a first transistor and a second transistor, one or more error amplifiers, and a switch with a first terminal coupled to the gate of the first transistor and a second terminal coupled to the output of one of the one or more error amplifiers. By selectively configuring one or more components of the multi-mode regulator, the regulator may operate according to either a linear regulation mode or a switching regulation mode.Type: ApplicationFiled: July 31, 2020Publication date: February 4, 2021Inventors: Chunping SONG, Hector Ivan Oporta, Sumukh Shevde
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Patent number: 10734891Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for powering up a charge pump converter and providing protection and soft-start circuitry therefor. One example charge pump converter generally includes a first transistor and a second transistor coupled in series between an input voltage node and an output voltage node of the charge pump converter, a first capacitive element having a first terminal coupled to a node between the first and second transistors, and a first switch coupled to the input voltage node, the first switch being configured to selectively enable a first drive circuit having an output coupled to a control terminal of the second transistor.Type: GrantFiled: June 6, 2018Date of Patent: August 4, 2020Assignee: QUALCOMM IncorporatedInventors: Hector Ivan Oporta, Zhaohui Zhu, Chunping Song, William Rader
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Publication number: 20190386481Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for providing input current limiting and input over current protection for a power converter, such as a charge pump converter. One example method of power conversion generally includes sensing an average value associated with an input current for a power supply circuit, sensing an instantaneous value associated with the input current for the power supply circuit, limiting the input current when the sensed average value is greater than a first threshold, and activating over current protection for the power supply circuit when the sensed instantaneous value is greater than a second threshold.Type: ApplicationFiled: March 1, 2019Publication date: December 19, 2019Inventors: Kunhee CHO, Hector Ivan OPORTA, Zhaohui ZHU, Chunping SONG
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Patent number: 10431939Abstract: Over-voltage protection systems and methods are disclosed. In one aspect, a biasing circuit is added to a pre-existing clamp required by the Universal Serial Bus (USB) Type-C specification at a configuration control (CC) pin. The biasing circuit turns the pre-existing clamp into an adjustable clamp that dynamically adjusts to over-voltage conditions. In an exemplary aspect, the biasing circuit may include a biasing field effect transistor (FET) and a pair of switches that selectively couple the pre-existing clamp and the biasing FET to fixed voltages such that the CC pin is maintained at an acceptable voltage. In another exemplary aspect, the biasing circuit may omit the biasing FET and rely on two switches that selectively couple the pre-existing clamp to fixed voltages such that the CC pin is maintained at an acceptable voltage.Type: GrantFiled: April 24, 2017Date of Patent: October 1, 2019Assignee: QUALCOMM IncorporatedInventors: Hector Ivan Oporta, Shashank Prakash Mane, Thomas O'Brien, Christian Gregory Sporck
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Publication number: 20190115829Abstract: Certain aspects of the present disclosure generally relate to methods and apparatus for powering up a charge pump converter and providing protection and soft-start circuitry therefor. One example charge pump converter generally includes a first transistor and a second transistor coupled in series between an input voltage node and an output voltage node of the charge pump converter, a first capacitive element having a first terminal coupled to a node between the first and second transistors, and a first switch coupled to the input voltage node, the first switch being configured to selectively enable a first drive circuit having an output coupled to a control terminal of the second transistor.Type: ApplicationFiled: June 6, 2018Publication date: April 18, 2019Inventors: Hector Ivan OPORTA, Zhaohui ZHU, Chunping SONG, William RADER
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Patent number: 10185342Abstract: A configurable charge converter may include an adaptive low-dropout regulator. The adaptive low-dropout regulator may include a headroom detection circuit and a power supply controller. The headroom detection circuit may monitor a voltage drop across a field effect transistor (FET) and cause a programmable power supply to increase or decrease an output voltage accordingly. In some aspects, the configurable charge converter may include an adaptive low-dropout regulator and a buck/boost converter. The output power of the configurable charge controller may be provided by the adaptive low-dropout regulator, the buck/boost converter, or by both the adaptive low-dropout regulator and the buck/boost converter operating in combination.Type: GrantFiled: September 13, 2017Date of Patent: January 22, 2019Assignee: QUALCOMM IncorporatedInventors: Aaron Melgar, Christian Sporck, Chunping Song, David Wong, Rashed Hoque, Neal Horovitz, Hector Ivan Oporta, Daryl Bergstrom
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Publication number: 20180129234Abstract: A configurable charge converter may include an adaptive low-dropout regulator. The adaptive low-dropout regulator may include a headroom detection circuit and a power supply controller. The headroom detection circuit may monitor a voltage drop across a field effect transistor (FET) and cause a programmable power supply to increase or decrease an output voltage accordingly. In some aspects, the configurable charge converter may include an adaptive low-dropout regulator and a buck/boost converter. The output power of the configurable charge controller may be provided by the adaptive low-dropout regulator, the buck/boost converter, or by both the adaptive low-dropout regulator and the buck/boost converter operating in combination.Type: ApplicationFiled: September 13, 2017Publication date: May 10, 2018Inventors: Aaron Melgar, Christian Sporck, Chunping Song, David Wong, Rashed Hoque, Neal Horovitz, Hector Ivan Oporta, Daryl Bergstrom
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Publication number: 20170346240Abstract: Over-voltage protection systems and methods are disclosed. In one aspect, a biasing circuit is added to a pre-existing clamp required by the Universal Serial Bus (USB) Type-C specification at a configuration control (CC) pin. The biasing circuit turns the pre-existing clamp into an adjustable clamp that dynamically adjusts to over-voltage conditions. In an exemplary aspect, the biasing circuit may include a biasing field effect transistor (FET) and a pair of switches that selectively couple the pre-existing clamp and the biasing FET to fixed voltages such that the CC pin is maintained at an acceptable voltage. In another exemplary aspect, the biasing circuit may omit the biasing FET and rely on two switches that selectively couple the pre-existing clamp to fixed voltages such that the CC pin is maintained at an acceptable voltage.Type: ApplicationFiled: April 24, 2017Publication date: November 30, 2017Inventors: Hector Ivan Oporta, Shashank Prakash Mane, Thomas O'Brien, Christian Gregory Sporck