Patents by Inventor Luca Petruzzi
Luca Petruzzi 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: 20240113718Abstract: Digital-to-analog converter circuitry comprising a sequence of multiple current drive modules. The sequence may include a first current drive module and a second current drive module of a digital-to-analog converter. The first current drive module is switchable between: i) a first mode of producing a first reference current that is mirrored by a second current drive module coupled to the first current drive module; and ii) a second mode of mirroring a second reference current that is produced by the second current drive module or a third current drive module coupled to the first current drive module.Type: ApplicationFiled: September 28, 2022Publication date: April 4, 2024Inventors: Sujata Sen, Luca Petruzzi, Aviral SRIVASTAVA
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Publication number: 20240103552Abstract: A signal adjustor receives a first signal such as feedback associated with generation of an output voltage. The output voltage is regulated based on a selected setpoint reference voltage. The signal adjustor maps a magnitude of the selected setpoint reference voltage to a first set of signal adjustment information amongst multiple sets of signal adjustment information. The signal adjustor then applies the first signal adjustment information to the first signal to produce a second signal.Type: ApplicationFiled: September 28, 2022Publication date: March 28, 2024Inventors: Aviral SRIVASTAVA, Luca Petruzzi, Benjamim Tang
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Publication number: 20240103553Abstract: An apparatus includes a calibration circuit operative to produce an error signal indicative of an error associated with a current generator circuit generating a secondary current from a reference current. The secondary current is proportional to the reference current. The calibration circuit derives an adjustment value from the error signal and applies the adjustment value to the current generator circuit. Application of the adjustment value reduces a magnitude of the error signal.Type: ApplicationFiled: September 28, 2022Publication date: March 28, 2024Inventors: Sujata Sen, Luca Petruzzi, Aviral Srivastava
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Patent number: 11515787Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.Type: GrantFiled: March 17, 2020Date of Patent: November 29, 2022Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Patent number: 11444632Abstract: A tracking analog-to-digital converter (ADC) for a power converter includes a first tracking loop and a second tracking loop. The first tracking loop is configured to track a voltage input to the tracking ADC using one or more comparators and has a re-clocking circuit to mitigate the impact of comparator output metastability, but introduces multi-cycle latency which increases a residual error of the voltage tracking provided by the first tracking loop. The second tracking loop is configured to supplement the voltage tracking provided by the first tracking loop and to reduce the residual error of the voltage tracking for dynamic changes at the voltage input. The second tracking loop has a single-cycle latency and is implemented with logic that is less sensitive to logic errors due to comparator metastability. Corresponding methods of voltage tracking and an electronic system are also described.Type: GrantFiled: October 22, 2020Date of Patent: September 13, 2022Assignee: Infineon Technologies Austria AGInventors: Sujata Sen, Mattia Oddicini, Luca Petruzzi, Benjamim Tang
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Patent number: 11392153Abstract: A power supply includes a voltage converter to produce an output voltage to power a load. The power supply further includes a reference voltage generator and a controller. The reference voltage generator is operative to generate a floor reference voltage that varies as a function of the output voltage depending on a setting of one or more adjustable (programmable) resistor-capacitor paths in the floor reference voltage generator. The controller produces control signals to control the voltage converter as a function of the floor reference voltage and the output voltage.Type: GrantFiled: February 6, 2020Date of Patent: July 19, 2022Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20220131552Abstract: A tracking analog-to-digital converter (ADC) for a power converter includes a first tracking loop and a second tracking loop. The first tracking loop is configured to track a voltage input to the tracking ADC using one or more comparators and has a re-clocking circuit to mitigate the impact of comparator output metastability, but introduces multi-cycle latency which increases a residual error of the voltage tracking provided by the first tracking loop. The second tracking loop is configured to supplement the voltage tracking provided by the first tracking loop and to reduce the residual error of the voltage tracking for dynamic changes at the voltage input. The second tracking loop has a single-cycle latency and is implemented with logic that is less sensitive to logic errors due to comparator metastability. Corresponding methods of voltage tracking and an electronic system are also described.Type: ApplicationFiled: October 22, 2020Publication date: April 28, 2022Inventors: Sujata Sen, Mattia Oddicini, Luca Petruzzi, Benjamim Tang
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Patent number: 11177730Abstract: An apparatus such as a DC-DC power converter including a switch, an ON-time controller, and a compensator operates in a constant ON-time control mode. Over multiple control cycles, the ON-time controller controls an ON-time duration of activating the switch and generation of an output voltage to power a dynamic load. The compensator, in communication with the ON-time controller, adjusts the ON-time duration of activating the switch depending on a magnitude of output current delivered by the output voltage to the dynamic load. For example, during heavier load conditions when the dynamic load consumes a higher amount of current, and in which internal resistive losses of the power supply become more substantial, the compensator increases the ON-time duration of activating the switch, resulting in operation of the power supply and switch closer to a desired frequency setpoint.Type: GrantFiled: October 17, 2019Date of Patent: November 16, 2021Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20210247788Abstract: A power supply includes a voltage converter to produce an output voltage to power a load. The power supply further includes a reference voltage generator and a controller. The reference voltage generator is operative to generate a floor reference voltage that varies as a function of the output voltage depending on a setting of one or more adjustable (programable) resistor-capacitor paths in the floor reference voltage generator. The controller produces control signals to control the voltage converter as a function of the floor reference voltage and the output voltage.Type: ApplicationFiled: February 6, 2020Publication date: August 12, 2021Inventors: Keng Chen, Luca Petruzzi
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Publication number: 20210119524Abstract: An apparatus such as a DC-DC power converter including a switch, an ON-time controller, and a compensator operates in a constant ON-time control mode. Over multiple control cycles, the ON-time controller controls an ON-time duration of activating the switch and generation of an output voltage to power a dynamic load. The compensator, in communication with the ON-time controller, adjusts the ON-time duration of activating the switch depending on a magnitude of output current delivered by the output voltage to the dynamic load. For example, during heavier load conditions when the dynamic load consumes a higher amount of current, and in which internal resistive losses of the power supply become more substantial, the compensator increases the ON-time duration of activating the switch, resulting in operation of the power supply and switch closer to a desired frequency setpoint.Type: ApplicationFiled: October 17, 2019Publication date: April 22, 2021Inventors: Keng Chen, Luca Petruzzi
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Patent number: 10756720Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.Type: GrantFiled: October 17, 2016Date of Patent: August 25, 2020Assignee: Infineon Technologies AGInventors: Christian Djelassi, Octavian Barbu, Markus Ladurner, Luca Petruzzi
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Publication number: 20200220448Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.Type: ApplicationFiled: March 17, 2020Publication date: July 9, 2020Inventors: Keng Chen, Luca Petruzzi
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Patent number: 10651797Abstract: An apparatus includes a first amplifier, a second amplifier, and a compensation-setting generator to generate a first amplifier compensation setting and second amplifier compensation setting. A controller is operable to: i) apply the first amplifier compensation setting to the first amplifier and apply the second amplifier compensation setting to the second amplifier. The controller is further operable to switch between generating updates to the first amplifier compensation setting and the second amplifier compensation setting.Type: GrantFiled: April 9, 2018Date of Patent: May 12, 2020Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Patent number: 10637342Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.Type: GrantFiled: June 29, 2018Date of Patent: April 28, 2020Assignee: Infineon Technologies Austria AGInventors: Keng Chen, Luca Petruzzi
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Publication number: 20200007021Abstract: A power supply includes a reference voltage generator, a power supply phase, and an adjustor. During operation, the reference voltage generator produces a reference voltage. The power supply phase produces an output voltage to power a load as a function of an output voltage feedback signal derived from the output voltage and the reference voltage. The adjustor adjusts a magnitude of the reference voltage to maintain regulation of the output voltage with respect to a desired voltage setpoint.Type: ApplicationFiled: June 29, 2018Publication date: January 2, 2020Inventors: Keng Chen, Luca Petruzzi
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Patent number: 10454469Abstract: An embodiment method includes detecting an inverse current condition at a switch, and driving a node associated with a switch driver driving the switch to a predetermined voltage in response to the detection of an inverse current condition at the switch. An embodiment switch device includes a switch driver configured to be coupled to a control terminal of a switch, an inverse current detector configured to detect an inverse current condition at the first and second load terminals of the switch, and a voltage driver configured to drive a node associated with the switch driver to a predetermined voltage in response to the inverse current detector detecting an inverse current condition.Type: GrantFiled: December 13, 2017Date of Patent: October 22, 2019Assignee: Infineon Technologies AGInventors: Francesca Romano, Alexander Mayer, Luca Petruzzi
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Publication number: 20190312551Abstract: An apparatus includes a first amplifier, a second amplifier, and a compensation-setting generator to generate a first amplifier compensation setting and second amplifier compensation setting. A controller is operable to: i) apply the first amplifier compensation setting to the first amplifier and apply the second amplifier compensation setting to the second amplifier. The controller is further operable to switch between generating updates to the first amplifier compensation setting and the second amplifier compensation setting.Type: ApplicationFiled: April 9, 2018Publication date: October 10, 2019Inventors: Keng Chen, Luca Petruzzi
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Patent number: 10175711Abstract: In some examples, a device includes a curvature-correction circuit including a first current source configured to generate a PTAT electrical current. In some examples, the curvature-correction circuit also includes three or more programmable current sources configured to generate three or more programmable electrical currents. In some examples, the curvature-correction circuit is configured to generate a PWL electrical current based on the PTAT electrical current and the three or more programmable electrical currents. In some examples, the device also includes a reference voltage circuit configured to generate a reference voltage signal based on the PWL electrical current.Type: GrantFiled: September 8, 2017Date of Patent: January 8, 2019Assignee: Infineon Technologies AGInventors: Luca Petruzzi, Anthony Candage
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Publication number: 20180175855Abstract: Devices and methods related to switches are discussed. An inverse current condition may be detected, and a voltage at a node associated with a switch driver may be driven to a predetermined voltage in case of detection of an inverse current condition.Type: ApplicationFiled: December 13, 2017Publication date: June 21, 2018Inventors: Francesca Romano, Alexander Mayer, Luca Petruzzi
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Publication number: 20180109251Abstract: A driver circuit for an electronic switch is described herein. According to one embodiment the driver circuit includes an input buffer with an input node for receiving a buffer input signal, a pull-down circuit coupled to the input node and a ground node, and a pull-up circuit coupled to the input node and a supply node. The driver circuit further includes control circuitry configured to activate either the pull-down circuit or the pull-up circuit. The pull-up circuit is activated when the voltage level of the buffer input signal is above a first threshold, and the pull-down circuit is activated when the voltage level of the buffer input signal is below a second threshold.Type: ApplicationFiled: October 17, 2016Publication date: April 19, 2018Inventors: Christian Djelassi, Octavian Barbu, Markus Ladurner, Luca Petruzzi