Patents by Inventor Orlando LAZARO
Orlando LAZARO 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: 20230001815Abstract: An example apparatus includes: a gate driver with a control output terminal, a power transistor with a gate terminal and a first current terminal, the gate terminal coupled to the control output terminal, and drain-derived supply circuitry with an output coupled to the first current terminal.Type: ApplicationFiled: June 30, 2021Publication date: January 5, 2023Inventors: Orlando Lazaro, Timothy Bryan Merkin, Yogesh Kumar Ramadass
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Patent number: 11515839Abstract: A system includes a power receiver including an oscillator with a first coil and a second coil. The oscillator includes a first field effect transistor (FET) having first gate, first source, and first drain terminals, the first drain terminal coupled to the first coil, the first coil adapted to be inductively coupled to a third coil in a power transmitter. The oscillator also includes a first capacitor coupled to the first coil. The oscillator includes a second FET having second gate, second source, and second drain terminals, the second gate terminal coupled to the first capacitor, the second source terminal coupled to the first source terminal, and the second drain terminal coupled to the second coil, the second coil adapted to be inductively coupled to a fourth coil in the power transmitter. The oscillator includes a second capacitor coupled to the first gate terminal and coupled to the second coil.Type: GrantFiled: November 2, 2020Date of Patent: November 29, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: Orlando Lazaro
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Patent number: 11502619Abstract: A method includes charging a capacitor of a power inverter to a direct current (DC) input voltage provided at an input terminal of the power inverter. The capacitor has a first terminal and a second terminal. The method also includes providing a first voltage at an output terminal of the power inverter at a first time by controlling one of either a set of input switches configured to selectively couple the first and second terminals to either the input terminal or to a ground terminal, or an output switch configured to selectively couple the output terminal to either the first terminal or the second terminal. The method further includes providing a second voltage at the output terminal at a second time by controlling the other of the set of input switches and the output switch.Type: GrantFiled: July 30, 2021Date of Patent: November 15, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Orlando Lazaro, Yogesh Kumar Ramadass, Nan Xing
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Patent number: 11394299Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes an amplifier having a first input configured to receive a signal representative of a condition related to a power converter, a second input configured to receive a reference signal, and an output, a PWM regulation circuit having an input coupled to the output of the amplifier, a first output configured to provide a first control signal for a high-side transistor of the power converter, and a second output configured to output a first control signal for a low-side transistor of the power converter, and a PFM regulation circuit having an input coupled to the output of the first amplifier, a first output configured to output a second control signal for the high-side transistor of the power converter, and a second output configured to output a second control signal for the low-side transistor of the power converter.Type: GrantFiled: September 10, 2019Date of Patent: July 19, 2022Assignee: Texas Instruments IncorporatedInventors: Orlando Lazaro, Reza Sharifi, Benjamin Matthew McCue, Ryan Erik Lind
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Patent number: 11362587Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.Type: GrantFiled: December 29, 2017Date of Patent: June 14, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Orlando Lazaro, Kevin Scoones, Alvaro Aguilar, Jeffrey Anthony Morroni, Sombuddha Chakraborty
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Publication number: 20220140826Abstract: In a described example, a circuit includes a power device having voltage inputs and a command input. A sensing circuit has a sensor input and a sensor output, in which the sensor input is coupled to the power device. A control circuit has a control input and a control output, in which the control input coupled to the sensor output. A driver circuit has a driver input and a driver output. The driver input is coupled to the control output, and the driver output is coupled to the command input of the power device.Type: ApplicationFiled: September 30, 2021Publication date: May 5, 2022Inventors: Orlando Lazaro, Timothy Merkin, John Russell Broze, Matthew Xiong, Yogesh Kumar Ramadass, Ujwal Radhakrishna
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Publication number: 20220140786Abstract: A system includes a power receiver including an oscillator with a first coil and a second coil. The oscillator includes a first field effect transistor (FET) having first gate, first source, and first drain terminals, the first drain terminal coupled to the first coil, the first coil adapted to be inductively coupled to a third coil in a power transmitter. The oscillator also includes a first capacitor coupled to the first coil. The oscillator includes a second FET having second gate, second source, and second drain terminals, the second gate terminal coupled to the first capacitor, the second source terminal coupled to the first source terminal, and the second drain terminal coupled to the second coil, the second coil adapted to be inductively coupled to a fourth coil in the power transmitter. The oscillator includes a second capacitor coupled to the first gate terminal and coupled to the second coil.Type: ApplicationFiled: November 2, 2020Publication date: May 5, 2022Inventor: Orlando LAZARO
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Patent number: 11159032Abstract: Aspects of the disclosure include a first sense transistor having a gate and a drain configured to couple in parallel with a high-side transistor and a source terminal coupled to a first node, and a second sense transistor having a gate and a drain configured to couple in parallel with a low-side transistor, and a source terminal coupled to a third node. The circuit further includes a first comparator circuit having a first input coupled to the first node, a second input coupled to a second node, and an output, a second comparator circuit having a first input coupled to the third node, a second input coupled to a ground node, and an output, and a logic circuit having first input coupled to the output of the first comparator circuit, a second input coupled to the output of the second comparator circuit, and an output.Type: GrantFiled: July 31, 2019Date of Patent: October 26, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Austin Womac, Eric Southard, Orlando Lazaro
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Patent number: 11101735Abstract: In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.Type: GrantFiled: September 26, 2019Date of Patent: August 24, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kevin Scoones, Orlando Lazaro, Alvaro Aguilar, Jeffrey Anthony Morroni, Reza Sharifi, Saurav Bandyopadhyay
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Patent number: 10931135Abstract: An energy harvesting sensor node includes an energy harvesting sensor, an energy storage device, and a transceiver. The energy harvesting sensor is configured to extract energy from an external source at a rate proportional to a value of a first parameter of the external source. The energy storage device is configured to store the extracted energy from the energy harvesting sensor at the rate proportional to the value of the first parameter. The transceiver is configured to transmit a plurality of data transmission frames at a frequency proportional to the value of the first parameter.Type: GrantFiled: March 15, 2016Date of Patent: February 23, 2021Assignee: Texas Instruments IncorporatedInventors: Orlando Lazaro, Leonardo Estevez
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Publication number: 20210036524Abstract: Aspects of the disclosure include a including a first sense transistor having a gate and a drain configured to couple in parallel with a high-side transistor and a source terminal coupled to a first node, and a second sense transistor having a gate and a drain configured to couple in parallel with a low-side transistor, and a source terminal coupled to a third node. The circuit further includes a first comparator circuit having a first input coupled to the first node, a second input coupled to a second node, and an output, a second comparator circuit having a first input coupled to the third node, a second input coupled to a ground node, and an output, and a logic circuit having first input coupled to the output of the first comparator circuit, a second input coupled to the output of the second comparator circuit, and an output.Type: ApplicationFiled: July 31, 2019Publication date: February 4, 2021Inventors: Austin WOMAC, Eric SOUTHARD, Orlando LAZARO
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Patent number: 10778099Abstract: A device includes a power converter having an input coupled to a first node and an output coupled to an output terminal adapted to couple to a battery. A blocking transistor is coupled between a second node and the first node. A regulator has inputs coupled to the first node and the second node and an output coupled to a control node of the blocking transistor. The regulator is configured to control the blocking transistor to regulate a voltage drop across the blocking transistor based on a voltage between the first node and the second node. The regulator is also configured to turn off the blocking transistor in response to a voltage at the first node exceeding a voltage at the second node by at least a threshold to block boost-back current flowing from the output terminal to the second node.Type: GrantFiled: July 23, 2019Date of Patent: September 15, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Austin James Womac, Siew Kuok Hoon, Orlando Lazaro
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Patent number: 10651736Abstract: A power converter device includes a set of switches configured to switch between at least three input-side voltage levels to provide output pulses. The power converter device also includes a control circuit for the set of switches, wherein the control circuit configured to selectively switch the power converter device between a continuous conduction mode of operation (CCM) having a first charge per pulse and a discontinuous conduction mode of operation (DCM) having a second charge per pulse, the second charge per pulse being greater than the first charge per pulse.Type: GrantFiled: December 27, 2018Date of Patent: May 12, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Orlando Lazaro, Alvaro Aguilar, Jeffrey Morroni, Kevin Scoones, Reza Sharifi
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Publication number: 20200127566Abstract: Aspects of the disclosure provide for a circuit. In some examples, the circuit includes an amplifier having a first input configured to receive a signal representative of a condition related to a power converter, a second input configured to receive a reference signal, and an output, a PWM regulation circuit having an input coupled to the output of the amplifier, a first output configured to provide a first control signal for a high-side transistor of the power converter, and a second output configured to output a first control signal for a low-side transistor of the power converter, and a PFM regulation circuit having an input coupled to the output of the first amplifier, a first output configured to output a second control signal for the high-side transistor of the power converter, and a second output configured to output a second control signal for the low-side transistor of the power converter.Type: ApplicationFiled: September 10, 2019Publication date: April 23, 2020Inventors: Orlando LAZARO, Reza SHARIFI, Benjamin Matthew McCUE, Ryan Erik LIND
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Publication number: 20200021196Abstract: In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.Type: ApplicationFiled: September 26, 2019Publication date: January 16, 2020Inventors: Kevin Scoones, Orlando Lazaro, Alvaro Aguilar, Jeffrey Anthony Morroni, Reza Sharifi, Saurav Bandyopadhyay
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Patent number: 10468988Abstract: In a described example, an apparatus includes a first switch coupled between a terminal for receiving an input voltage and a top plate node, and having a first control terminal; a second switch coupled between the top plate node and a switching node, and having a second control terminal; a third switch coupled between the switching node and a bottom plate node and having a third control terminal; a fourth switch coupled between the bottom plate node and a ground terminal, and having a fourth control terminal; a flying capacitor coupled between the top plate node and the bottom plate node; a fifth switch coupled between the top plate node and an auxiliary node; a sixth switch coupled between the auxiliary node and the bottom plate node; and an auxiliary capacitor coupled between the auxiliary control terminal and a ground terminal.Type: GrantFiled: August 8, 2018Date of Patent: November 5, 2019Assignee: Texas Instruments IncorporatedInventors: Kevin Scoones, Orlando Lazaro, Alvaro Aguilar, Jeffrey Anthony Morroni, Reza Sharifi, Saurav Bandyopadhyay
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Patent number: 10439494Abstract: In described examples of methods and control circuitry to control a power conversion system, a regulator circuit is coupled to provide switching control signals according to a regulation signal to operate a plurality of converter switches to generate a voltage signal at a switching node. A compensation sense circuit is coupled to provide a compensation pulse signal having a duty cycle that represents a percentage of time that a current flowing through the switching node is above a threshold value. A current compensation circuit adjusts the regulation signal according to the compensation pulse signal.Type: GrantFiled: March 1, 2018Date of Patent: October 8, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Reza Sharifi, Kevin Scoones, Orlando Lazaro, Alvaro Aguilar
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Patent number: 10355609Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system with a flying capacitor, a power circuit regulates a regulator input voltage signal to provide a supply voltage signal to the control circuitry. A power switching circuit couples the regulator input to a first terminal of the flying capacitor in response to a second terminal of the flying capacitor being coupled to a reference voltage node in a given switching cycle, and couples the regulator input to the second terminal in response to the first terminal being coupled to an input node of the power conversion system in the given switching cycle.Type: GrantFiled: December 29, 2017Date of Patent: July 16, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Orlando Lazaro, Kevin Scoones, Jeffrey Anthony Morroni, Alvaro Aguilar, Reza Sharifi
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Publication number: 20190058398Abstract: In described examples of methods and control circuitry to control a power conversion system, a regulator circuit is coupled to provide switching control signals according to a regulation signal to operate a plurality of converter switches to generate a voltage signal at a switching node. A compensation sense circuit is coupled to provide a compensation pulse signal having a duty cycle that represents a percentage of time that a current flowing through the switching node is above a threshold value. A current compensation circuit adjusts the regulation signal according to the compensation pulse signal.Type: ApplicationFiled: March 1, 2018Publication date: February 21, 2019Applicant: Texas Instruments IncorporatedInventors: Reza Sharifi, Kevin Scoones, Orlando Lazaro, Alvaro Aguilar
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Publication number: 20190058385Abstract: In described examples of methods and control circuitry to control a multi-level power conversion system, the control circuitry generates PWM signals having a duty cycle to control an output signal. The duty cycle is adjustable in different switching cycles. States of the system's switches are adjustable in one or more intervals within the switching cycles. In response to a voltage across a capacitor of the system being outside a non-zero voltage range, the control circuitry adjusts states of the switches in two intervals to discharge or charge the capacitor in a given switching cycle.Type: ApplicationFiled: December 29, 2017Publication date: February 21, 2019Inventors: Orlando Lazaro, Kevin Scoones, Alvaro Aguilar, Jeffrey Anthony Morroni, Sombuddha Chakraborty