Patents by Inventor Kinam SONG

Kinam SONG 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).

  • Patent number: 10879887
    Abstract: A circuit for controlling a gate driver includes a delay circuit, a first logic circuit, and a second logic circuit. The delay circuit receives a first turn-off signal and produces a second turn-off signal by delaying an assertion of the first turn-off signal by a freewheeling duration. The first logic circuit receives the first and second turn-off signals and produces a smart turn-off signal by asserting the smart turn-off signal when the first turn-off signal is asserted and the second turn-off signal is not asserted. The second logic circuit receives a restart signal and the smart turn-off signal and produces a smart reset signal by asserting the smart reset signal when the restart signal and the smart turn-off signal are de-asserted, and de-asserting the smart reset signal when one or more of the restart signal and the smart turn-off signal are asserted.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: December 29, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam Song, JunHo Lee, Wonhi Oh, Jinkyu Choi
  • Patent number: 10826374
    Abstract: A circuit for controlling a power converter includes a pulse generator generating a first pulse signal and a second pulse signal in response to an input signal, the first pulse signal being asserted at a given time interval or thereafter after the input signal has been de-asserted, a level-shift circuit shifting a level of the first pulse signal to generate a first shifted signal and to shift a level of the second pulse signal to generate a second shifted signal, a logic circuit controlling a first-side switching device in response to the first and second shifted signals, and an output node outputting an output signal. The first-side switching device is coupled to a second side-switching device at the output node.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: November 3, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, JunHo Lee
  • Patent number: 10707862
    Abstract: An UVLO circuit according to an aspect of the present invention includes: a power-on reset (POR) circuit generating an output based on a first current that flows according to an increase of a power supply voltage and not operating in a normal state of the power supply voltage; and a logic operation unit generating a reset signal according to an output of the POR circuit and an output based on a result of comparison between a sense voltage that corresponds to the power supply voltage and a predetermined reference voltage.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: July 7, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, BumSeung Jin, Samuell Shin
  • Publication number: 20200052572
    Abstract: A circuit for controlling a power converter includes a pulse generator generating a first pulse signal and a second pulse signal in response to an input signal, the first pulse signal being asserted at a given time interval or thereafter after the input signal has been de-asserted, a level-shift circuit shifting a level of the first pulse signal to generate a first shifted signal and to shift a level of the second pulse signal to generate a second shifted signal, a logic circuit controlling a first-side switching device in response to the first and second shifted signals, and an output node outputting an output signal. The first-side switching device is coupled to a second side-switching device at the output node.
    Type: Application
    Filed: August 8, 2018
    Publication date: February 13, 2020
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, JunHo LEE
  • Publication number: 20190296728
    Abstract: A circuit for controlling a gate driver includes a delay circuit, a first logic circuit, and a second logic circuit. The delay circuit receives a first turn-off signal and produces a second turn-off signal by delaying an assertion of the first turn-off signal by a freewheeling duration. The first logic circuit receives the first and second turn-off signals and produces a smart turn-off signal by asserting the smart turn-off signal when the first turn-off signal is asserted and the second turn-off signal is not asserted. The second logic circuit receives a restart signal and the smart turn-off signal and produces a smart reset signal by asserting the smart reset signal when the restart signal and the smart turn-off signal are de-asserted, and de-asserting the smart reset signal when one or more of the restart signal and the smart turn-off signal are asserted.
    Type: Application
    Filed: March 26, 2018
    Publication date: September 26, 2019
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam SONG, JunHo LEE, Wonhi OH, Jinkyu CHOI
  • Patent number: 10277212
    Abstract: A pulse generator includes a first inverter configured to inverse an input pulse and output a result, a second inverter configured to inverse the output of the first inverter and output a result, a clamp inverter configured to generate a clamping voltage by clamping the output of the second inverter and generate an output pulse through a source follower which operates according to the clamping voltage, and a temperature compensator configured to compensate for variations in the clamping voltage caused by temperature change.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: April 30, 2019
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, Tae-sung Kwon, Seunghyun Hong
  • Publication number: 20190028097
    Abstract: In a general aspect, an apparatus can include a low-side drive circuit configured to control a low-side device of a power semiconductor device pair and a high-side drive circuit configured to control a high-side device of the power semiconductor device pair. The high-side drive circuit can include an input circuit configured to receive an input signal and produce, based on the input signal, a first control signal, from which a latch set signal is produced to turn on the high-side device, and a second control signal, from which a latch reset signal is produced to turn off the high-side device. The high-side drive circuit can further include an overlap-prevention circuit configured to prevent timing overlap between the second control signal and a voltage-recovery period of the high-voltage circuit, where the voltage-recovery period occurs after turning off the high-side device of the power semiconductor device pair.
    Type: Application
    Filed: July 24, 2017
    Publication date: January 24, 2019
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, JunHo LEE, Seunghyun HONG
  • Patent number: 10187053
    Abstract: In a general aspect, an apparatus can include a low-side drive circuit configured to control a low-side device of a power semiconductor device pair and a high-side drive circuit configured to control a high-side device of the power semiconductor device pair. The high-side drive circuit can include an input circuit configured to receive an input signal and produce, based on the input signal, a first control signal, from which a latch set signal is produced to turn on the high-side device, and a second control signal, from which a latch reset signal is produced to turn off the high-side device. The high-side drive circuit can further include an overlap-prevention circuit configured to prevent timing overlap between the second control signal and a voltage-recovery period of the high-voltage circuit, where the voltage-recovery period occurs after turning off the high-side device of the power semiconductor device pair.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: January 22, 2019
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, JunHo Lee, Seunghyun Hong
  • Publication number: 20180351545
    Abstract: An UVLO circuit according to an aspect of the present invention includes: a power-on reset (POR) circuit generating an output based on a first current that flows according to an increase of a power supply voltage and not operating in a normal state of the power supply voltage; and a logic operation unit generating a reset signal according to an output of the POR circuit and an output based on a result of comparison between a sense voltage that corresponds to the power supply voltage and a predetermined reference voltage.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 6, 2018
    Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, BumSeung JIN, Samuell SHIN
  • Patent number: 10090668
    Abstract: A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: October 2, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Jinkyu Choi, Wonhi Oh, Kinam Song, Hyunsoo Bae, Samuell Shin
  • Patent number: 10069491
    Abstract: An UVLO circuit according to an aspect of the present invention includes: a power-on reset (POR) circuit generating an output based on a first current that flows according to an increase of a power supply voltage and not operating in a normal state of the power supply voltage; and a logic operation unit generating a reset signal according to an output of the POR circuit and an output based on a result of comparison between a sense voltage that corresponds to the power supply voltage and a predetermined reference voltage.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 4, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, Bumseung Jin, Samuell Shin
  • Publication number: 20170373673
    Abstract: A pulse generator includes a first inverter configured to inverse an input pulse and output a result, a second inverter configured to inverse the output of the first inverter and output a result, a clamp inverter configured to generate a clamping voltage by clamping the output of the second inverter and generate an output pulse through a source follower which operates according to the clamping voltage, and a temperature compensator configured to compensate for variations in the clamping voltage caused by temperature change.
    Type: Application
    Filed: August 23, 2017
    Publication date: December 28, 2017
    Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, Tae-sung KWON, Seunghyun HONG
  • Publication number: 20170310101
    Abstract: A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.
    Type: Application
    Filed: July 13, 2017
    Publication date: October 26, 2017
    Applicant: FAIRCHILD KOREA SEMICONDUCTOR, LTD.
    Inventors: Jinkyu CHOI, Wonhi OH, Kinam SONG, Hyunsoo BAE, Samuell SHIN
  • Patent number: 9755625
    Abstract: A pulse generator includes a first inverter configured to inverse an input pulse and output a result, a second inverter configured to inverse the output of the first inverter and output a result, a clamp inverter configured to generate a clamping voltage by clamping the output of the second inverter and generate an output pulse through a source follower which operates according to the clamping voltage, and a temperature compensator configured to compensate for variations in the clamping voltage caused by temperature change.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: September 5, 2017
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Kinam Song, Wonhi Oh, Jinkyu Choi, Taesung Kwon, Seunghyun Hong
  • Patent number: 9735565
    Abstract: A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: August 15, 2017
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Jinkyu Choi, Wonhi Oh, Kinam Song, Hyunsoo Bae, Samuell Shin
  • Publication number: 20170012619
    Abstract: An UVLO circuit according to an aspect of the present invention includes: a power-on reset (POR) circuit generating an output based on a first current that flows according to an increase of a power supply voltage and not operating in a normal state of the power supply voltage; and a logic operation unit generating a reset signal according to an output of the POR circuit and an output based on a result of comparison between a sense voltage that corresponds to the power supply voltage and a predetermined reference voltage.
    Type: Application
    Filed: July 7, 2016
    Publication date: January 12, 2017
    Applicant: Fairchild Korea Semiconductor, LTD
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, Bumseung JIN, Samuell SHIN
  • Publication number: 20150381152
    Abstract: A bi-directional transmitter/receiver according to an embodiment includes a pin connected with a main control circuit, a transistor connected with a first electrode to the pin, a Schmitt trigger which determines an output according to a voltage of the pin, and a temperature sensor which is connected to the pin and which senses temperature and outputs temperature information to the pin. A driving circuit for controlling switching operation of one or more switches includes a bi-directional transmitter/receiver.
    Type: Application
    Filed: June 24, 2015
    Publication date: December 31, 2015
    Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.
    Inventors: Jinkyu CHOI, Wonhi OH, Kinam SONG, Hyunsoo BAE, Samuell SHIN
  • Publication number: 20150318855
    Abstract: A pulse generator includes a first inverter configured to inverse an input pulse and output a result, a second inverter configured to inverse the output of the first inverter and output a result, a clamp inverter configured to generate a clamping voltage by clamping the output of the second inverter and generate an output pulse through a source follower which operates according to the clamping voltage, and a temperature compensator configured to compensate for variations in the clamping voltage caused by temperature change.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Kinam SONG, Wonhi OH, Jinkyu CHOI, Tae-sung KWON, Seunghyun HONG