Patents by Inventor Tiziano Pastore

Tiziano Pastore 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).

  • Publication number: 20200358361
    Abstract: A controller for use in a power converter comprising a comparator, request control, and foldback control. The comparator configured to receive a feedback signal representative of an output of the power converter and a first regulation reference representative of a target value for the output, and in response to the comparison of the feedback signal and the first regulation reference, generate a first regulation signal. Request control configured to receive the first regulation reference, and output a request signal with request events. Foldback control configured to receive the first regulation signal to generate the first regulation reference, the foldback control further configured to sense a foldback or fault condition if the feedback signal is less than the first regulation reference for a threshold duration of time, the foldback control further configured to vary the first regulation reference in response to the sensed foldback or fault condition to reduce the output.
    Type: Application
    Filed: July 24, 2020
    Publication date: November 12, 2020
    Applicant: Power Integrations, Inc.
    Inventors: TIZIANO PASTORE, Sundaresan Sundararaj
  • Patent number: 10826375
    Abstract: A controller for use in a power converter comprising a request control circuit coupled to receive a feedback signal representative of an output of the power converter. The request control circuit is coupled to generate a request signal for controlling a power switch. The request signal can include a synchronization signal in response to the feedback signal and a jitter average signal. The synchronization signal is generated by the request transmitter circuit and corresponds to an average on time for controlling the power switch.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 3, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Zhao-Jun Wang, Sundaresan Sundararaj, Tiziano Pastore, Qing McIntosh, Lance M. Wong
  • Patent number: 10797602
    Abstract: A controller for use in a power converter includes a comparator configured to compare a sense signal representative of an amount of energy delivered to an output of the power converter, to a target value. An update clock generator configured to receive the sense signal and to generate a clock signal having a clock frequency in response to the sense signal. A request control coupled to the comparator and to the update clock generator, the request control configured to generate a request signal having a request frequency that is responsive to an output of the comparator and that controls an operational state of a power switch of the power converter. The request control further configured to update a rate at which the request frequency of the request signal is responsive to the clock frequency of the clock signal.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 6, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10763753
    Abstract: A controller for use in a power converter comprising a comparator, request control, and foldback control. The comparator configured to receive a feedback signal representative of an output of the power converter and a first regulation reference representative of a target value for the output, and in response to the comparison of the feedback signal and the first regulation reference, generate a first regulation signal. Request control configured to receive the first regulation reference, and output a request signal with request events. Foldback control configured to receive the first regulation signal to generate the first regulation reference, the foldback control further configured to sense a foldback or fault condition if the feedback signal is less than the first regulation reference for a threshold duration of time, the foldback control further configured to vary the first regulation reference in response to the sensed foldback or fault condition to reduce the output.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: September 1, 2020
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Publication number: 20200195152
    Abstract: A controller for use in a power converter comprising a comparator, request control, and foldback control. The comparator configured to receive a feedback signal representative of an output of the power converter and a first regulation reference representative of a target value for the output, and in response to the comparison of the feedback signal and the first regulation reference, generate a first regulation signal. Request control configured to receive the first regulation reference, and output a request signal with request events. Foldback control configured to receive the first regulation signal to generate the first regulation reference, the foldback control further configured to sense a foldback or fault condition if the feedback signal is less than the first regulation reference for a threshold duration of time, the foldback control further configured to vary the first regulation reference in response to the sensed foldback or fault condition to reduce the output.
    Type: Application
    Filed: October 9, 2019
    Publication date: June 18, 2020
    Applicant: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Publication number: 20200186021
    Abstract: A controller for use in a power converter comprising a request control circuit coupled to receive a feedback signal representative of an output of the power converter. The request control circuit is coupled to generate a request signal for controlling a power switch. The request signal can include a synchronization signal in response to the feedback signal and a jitter average signal. The synchronization signal is generated by the request transmitter circuit and corresponds to an average on time for controlling the power switch.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 11, 2020
    Applicant: Power Integrations, Inc.
    Inventors: Zhao-Jun Wang, Sundaresan Sundararaj, Tiziano Pastore, Qing McIntosh, Lance M. Wong
  • Publication number: 20200127572
    Abstract: A power conversion system includes a switch mode power converter including a switch coupled to regulate an output voltage to a regulation value in response to a feedback signal. A controller is coupled to deliver a gate drive signal to the switch during an enabled control condition. The controller is further coupled to inhibit the gate drive signal to the switch during an inhibited control condition. A duty cycle state machine included in controller is coupled to adjust a duty cycle of the gate drive signal according to a plurality of discrete duty cycle states.
    Type: Application
    Filed: November 14, 2019
    Publication date: April 23, 2020
    Applicant: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Publication number: 20200119652
    Abstract: A controller for use in a power converter includes a comparator configured to compare a sense signal representative of an amount of energy delivered to an output of the power converter, to a target value. An update clock generator configured to receive the sense signal and to generate a clock signal having a clock frequency in response to the sense signal. A request control coupled to the comparator and to the update clock generator, the request control configured to generate a request signal having a request frequency that is responsive to an output of the comparator and that controls an operational state of a power switch of the power converter. The request control further configured to update a rate at which the request frequency of the request signal is responsive to the clock frequency of the clock signal.
    Type: Application
    Filed: August 8, 2019
    Publication date: April 16, 2020
    Applicant: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10505458
    Abstract: A power conversion system includes a switch mode power converter including a switch coupled to regulate an output voltage to a regulation value in response to a feedback signal. A controller is coupled to deliver a gate drive signal to the switch during an enabled control condition. The controller is further coupled to inhibit the gate drive signal to the switch during an inhibited control condition. A duty cycle state machine included in controller is coupled to adjust a duty cycle of the gate drive signal according to a plurality of discrete duty cycle states.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: December 10, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10491126
    Abstract: A controller for use in a power converter includes comparator coupled to generate a regulation signal in response to a regulation reference and an output sense signal. The output sense signal is representative of an output of the power converter. A drive signal generator is coupled to the comparator to generate a drive signal to control switching of a power switch of the power converter in response to the regulation signal. The drive signal generator is further coupled to generate an operation sense signal representative of an operational state of the power switch. A foldback control is coupled to the comparator and the drive signal generator to generate the regulation reference in response to the regulation signal and the operation sense signal.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 26, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10418908
    Abstract: A controller for use in a switched mode power converter includes a comparator coupled to compare an output sense signal representative of an output of the switched mode power converter to a target value. An update clock generator is coupled to generate a clock signal having a clock frequency in response to the output sense signal. A request control is coupled to generate a request signal having a request frequency in response to an output of the comparator and the clock signal to control an operational state of a power switch of the switched mode power converter. A speed at which the request control updates the request frequency of the request signal is responsive to the clock frequency of the clock signal.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 17, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10389226
    Abstract: A controller for use in a switched mode power converter includes a comparator coupled to compare an output sense signal representative of an output of the switched mode power converter to a target value. A ripple compensation block is coupled to generate a compensation signal in response to the output sense signal. The compensation signal is a fraction of the output sense signal. A request control is coupled to generate a request signal having a request frequency in response to an output of the comparator and a clock signal to control an operational state of a power switch of the switched mode power converter. The request control is further coupled to receive the compensation signal to modulate the request frequency of the request signal with the compensation signal in response to the output of the comparator to provide ripple compensation at the output of the switched mode power converter.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: August 20, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Publication number: 20190157966
    Abstract: A controller for use in a power converter includes a secondary controller coupled to receive a feedback signal representative of an output of the power converter to generate d a request signal. A primary controller is coupled to receive the request signal to generate a primary drive signal. The primary drive signal is coupled to control switching of a power switch to control a transfer of energy from the input to the output of the power converter. A frequency to on-time converter included in the primary controller is coupled to receive the request signal. The frequency to on-time converter is coupled to control the duration of on-time pulses included in the primary drive signal in response to a period of the request signal.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 23, 2019
    Applicant: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10243442
    Abstract: A controller for use in a power converter includes a secondary controller coupled to receive a feedback signal representative of an output of the power converter to generate d a request signal. A primary controller is coupled to receive the request signal to generate a primary drive signal. The primary drive signal is coupled to control switching of a power switch to control a transfer of energy from the input to the output of the power converter. A frequency to on-time converter included in the primary controller is coupled to receive the request signal. The frequency to on-time converter is coupled to control the duration of on-time pulses included in the primary drive signal in response to a period of the request signal.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: March 26, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Balu Balakrishnan, Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 10236763
    Abstract: A switching circuit with reverse current prevention for use in a Buck converter includes a power switch coupled to a coupling node, which is an interconnection point of a power switch, an inductor and a freewheeling diode of the Buck converter. The inductor is coupled between the coupling node and an output of the Buck converter, and the freewheeling diode is coupled between coupling node and an output return of the Buck converter. A controller is coupled to receive a feedback signal to control switching of the power switch to regulate a transfer of energy from the input to the output of the Buck converter. A reverse current prevention circuit is coupled to detect a reverse current condition of the power switch to generate an inhibit signal to inhibit the power switch from receiving a drive signal to prevent a reverse current through the power switch.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: March 19, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Zongqi Hu, Tiziano Pastore, Peter Vaughan, Yury Gaknoki, Jose Requinton Del Carmen, Jr., Sundaresan Sundararaj
  • Patent number: 9750102
    Abstract: A controller for use in a power converter includes a first edge detection circuit that receives a first input sense signal representative of an input of the power converter coupled to a dimmer circuit, and generates a first edge detection signal in response to the first input sense signal. A shaping circuit receives the first edge detection signal from the first edge detection circuit. The shaping circuit generates a first shape signal in response to the first edge detection signal. A drive circuit receives the first shape signal and a feedback signal representative of an output of the power converter. The drive circuit generates the drive signal in response to the feedback signal to control switching of a power switch of the power converter. The drive circuit switches the power switch in a first higher current mode for a first duration in response to the first shape signal.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 29, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Mingming Mao, Tiziano Pastore, Ricardo Luis Janezic Pregitzer, Antonius Jacobus Johannes Werner, Matthew David Waterson
  • Patent number: 9722506
    Abstract: A controller for a switched mode power converter includes limit-to-valley ratio circuitry, an on-time generator, and a drive circuit. The limit-to-valley ratio circuitry is coupled to generate a ratio signal in response to sensing a switch current of a switch that regulates an output of the switched mode power converter. The ratio signal is representative of a time ratio between a first length of time that the switch current is at or above a switch current limit and a second length of time that the switch current is at or below a switch current valley that is a portion of the switch current limit. The on-time generator is coupled to vary a switch on-time signal in response to receiving the ratio signal. The drive circuit is coupled to output a drive signal to a control terminal of the switch in response to receiving the switch on-time signal.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: August 1, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Tiziano Pastore, Sundaresan Sundararaj
  • Patent number: 9692298
    Abstract: A transient event detector includes a first reference generator, an adjustable low-pass filter, and a comparator. The first reference generator coupled to scale the input current signal to generate a first reference current signal that tracks the input current signal. The adjustable low-pass filter circuit is coupled to receive the input current signal and to generate a filtered input current signal such that a magnitude of a slope of the filtered input current signal is less than the magnitude of the slope of the input current signal during a transient event. The first comparator is coupled to generate an event detection signal that indicates the presence of the transient event in response to a value of the filtered input current signal reaching a value of the first reference current signal. The adjustable low-pass filter circuit is configured to increase the cutoff frequency in response to the event detection signal.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: June 27, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Ricardo Luis Janezic Pregitzer, Mingming Mao, Tiziano Pastore, Michael Yue Zhang, Yury Gaknoki
  • Patent number: 9680383
    Abstract: A controller for use in a power converter includes a state selection circuit coupled to receive an input voltage sense signal representative of an input voltage, a switch current sense signal representative of a switch current of a power switch, and a feedback signal representative of an output quantity of the power converter. The state selection circuit is coupled to generate an input voltage signal in response to the input voltage sense signal, an input current signal in response to the switch current sense signal, and an input threshold signal in response to the feedback signal. A state machine circuit is coupled to the state selection circuit to generate a drive signal in response to the input voltage signal, the input current signal, and the input threshold signal to switch the power switch to control a transfer of energy from an input to an output of the power converter.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: June 13, 2017
    Assignee: Power Integrations, Inc.
    Inventors: Mingming Mao, Ricardo Luis Janezic Pregitzer, Michael Yue Zhang, Tiziano Pastore
  • Patent number: 9621019
    Abstract: A controller includes a multiplier block that is coupled to receive an input voltage signal, an input current signal, and an output voltage signal that are representative of a power conversion system. The multiplier block outputs a multiplier block output signal responsive to a product of the input voltage signal and the input current signal divided by the output voltage signal. A signal discriminator outputs a error signal responsive to the multiplier block output signal. The error signal is representative of a difference between a portion of the multiplier block output signal that is greater than a reference signal and a portion of the multiplier block output signal that is less than or equal to the reference signal. A switch controller generates a drive signal responsive to the error signal to control switching of a power switch to regulate an average output current of the power conversion system.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: April 11, 2017
    Assignee: Power Intergrations, Inc.
    Inventors: Michael Yue Zhang, Ricardo Luis Janezic Pregitzer, Mingming Mao, Tiziano Pastore