Patents by Inventor Han-Suk Seo

Han-Suk Seo 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: 20210135586
    Abstract: The present invention relates to a method for performing a mutual communication between an input stage and an output stage while performing a power transmission therebetween by using an operation mode conversion of a converter even without a separate communication line.
    Type: Application
    Filed: July 2, 2018
    Publication date: May 6, 2021
    Inventors: Jung Ik HA, Geon Hong MIN, Han Suk SEO, Jong Hun KIM
  • Patent number: 10312709
    Abstract: A method of charging a battery by a charging system comprising a master charging circuit and N (N is a natural number) slave charging circuits. The method includes: sourcing a first current to a single-wired bus by the master charging circuit; absorbing (sinking) a second current from the single-wired bus by the N slave charging circuits connected to the single-wired bus; identifying a single-wired bus voltage formed on the single-wired bus at a particular time point by the master charging circuit; and identifying the number of slave charging circuits based on the single-wired bus voltage by the master charging circuit.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 4, 2019
    Assignee: Silicon Mitus, Inc.
    Inventors: Ho Jun Shin, Kang Yoon Lee, Kwang Muk Choi, Ii Kwon Jang, Han Suk Seo, Hyung Gu Park, Young Jun Park, Seong Jin Oh, Ju Hyun Park, Jung Yeon Kim
  • Publication number: 20180198361
    Abstract: The present disclosure provides a multi-channel switching converter which may be operated from a plurality of energy sources, using multiple channels, and may effectively maintain an output voltage by driving the switching converter from any one energy source or a plurality of energy sources that are most suitable in consideration of input voltages of the plurality of energy sources and may provide an output through another energy source even though a problem occurs in some of the plurality of energy sources.
    Type: Application
    Filed: December 28, 2017
    Publication date: July 12, 2018
    Inventors: Dong Hoon SEONG, Han Suk SEO, Jong Hun KIM
  • Publication number: 20180026467
    Abstract: A method of charging a battery by a charging system comprising a master charging circuit and N (N is a natural number) slave charging circuits. The method includes: sourcing a first current to a single-wired bus by the master charging circuit; absorbing (sinking) a second current from the single-wired bus by the N slave charging circuits connected to the single-wired bus; identifying a single-wired bus voltage formed on the single-wired bus at a particular time point by the master charging circuit; and identifying the number of slave charging circuits based on the single-wired bus voltage by the master charging circuit.
    Type: Application
    Filed: July 18, 2017
    Publication date: January 25, 2018
    Inventors: Ho Jun SHIN, Kang Yoon LEE, Kwang Muk CHOI, Il Kwon JANG, Han Suk SEO, Hyung Gu PARK, Young Jun PARK, Seong Jin OH, Ju Hyun PARK, Jung Yeon KIM
  • Patent number: 7902794
    Abstract: A battery charger comprises charging circuitry for providing a battery charging voltage responsive to an input voltage. First circuitry provides both over-voltage protection and an input voltage bypass signal responsive to the input voltage. The first circuitry includes a low impedance switch having a resistance of at least 500 m? for connecting the input voltage to an output voltage node. The first circuit also includes a higher impedance switch having a resistance of at least 1000 m? for providing the input voltage as a voltage bypass signal.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: March 8, 2011
    Assignee: Intersil Americas Inc.
    Inventors: Faisal Ahmad, Han-Suk Seo
  • Patent number: 7889518
    Abstract: In one embodiment, a power converter generates an output voltage by modulating an input voltage according to operations of a first switch and a second switch connected in a half-bridge arrangement. The power converter includes a switch driver circuit for controlling the turning on and off of the first and second switches. A PWM controller generates a switch driver control signal for controlling the switch driver circuit according to an output voltage. The switch driver circuit generates an on-time control signal for turning off the first switch when the first switch has been turned on for longer than a threshold period.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: February 15, 2011
    Assignee: Fairchild Korea Semiconductor, Ltd.
    Inventors: Hang-Seok Choi, Han-Suk Seo
  • Publication number: 20090009138
    Abstract: A battery charger comprises charging circuitry for providing a battery charging voltage responsive to an input voltage. First circuitry provides both over-voltage protection and an input voltage bypass signal responsive to the input voltage. The first circuitry includes a low impedance switch having a resistance of at least 500 m? for connecting the input voltage to an output voltage node. The first circuit also includes a higher impedance switch having a resistance of at least 1000 m? for providing the input voltage as a voltage bypass signal.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 8, 2009
    Applicant: INTERSIL AMERICAS INC.
    Inventors: FAISAL AHMAD, HAN-SUK SEO
  • Publication number: 20070268729
    Abstract: In one embodiment, a power converter generates an output voltage by modulating an input voltage according to operations of a first switch and a second switch connected in a half-bridge arrangement. The power converter includes a switch driver circuit for controlling the turning on and off of the first and second switches. A PWM controller generates a switch driver control signal for controlling the switch driver circuit according to an output voltage. The switch driver circuit generates an on-time control signal for turning off the first switch when the first switch has been turned on for longer than a threshold period.
    Type: Application
    Filed: April 27, 2007
    Publication date: November 22, 2007
    Inventors: Hang-Seok Choi, Han-Suk Seo