Patents by Inventor Dong Kyun Ryu
Dong Kyun Ryu 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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Patent number: 10630191Abstract: A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.Type: GrantFiled: May 4, 2018Date of Patent: April 21, 2020Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Cheol-wan Park, Dong-kyun Ryu, Heung-gyoon Choi
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Patent number: 10541619Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: GrantFiled: May 4, 2018Date of Patent: January 21, 2020Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Hyun-su Gu, Hyo-hun Kim, Dong-kyun Ryu, Heung-gyoon Choi
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Patent number: 10505463Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: GrantFiled: May 4, 2018Date of Patent: December 10, 2019Assignee: SOLUM CO., LTD.Inventors: Sang-keun Ji, Sang-kyoo Han, Hyun-su Gu, Hyo-hun Kim, Dong-kyun Ryu, Heung-gyoon Choi
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Publication number: 20180342953Abstract: A transformer and an LLC resonant converter are provided. The transformer includes first and second cores configured to include a pair of outer foots and a middle foot positioned between the outer foots, and to induce a magnetic field formation; first and second inductor winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the first core, and to be connected in series with each other; and first and second transformer winding parts configured to include a conductor surrounding a circumference of each of the pair of outer foots of the second core, wherein the pair of outer foots of the first core face the pair of outer foots of the second core, the middle foot of the first core faces the middle foot of the second core, and the first core and the second core are disposed to be spaced apart from each other.Type: ApplicationFiled: May 4, 2018Publication date: November 29, 2018Inventors: Sang-keun JI, Sang-kyoo HAN, Cheol-wan PARK, Dong-kyun RYU, Heung-gyoon CHOI
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Publication number: 20180342958Abstract: An LLC resonant converter and an electronic device are provided. The LLC resonant converter according to the present disclosure includes a multi input transformer, first and second converter units connected to a primary side of the multi input transformer, an input voltage part, a first balance capacitor, and an output part connected to a secondary side of the multi input transformer.Type: ApplicationFiled: May 4, 2018Publication date: November 29, 2018Inventors: Sang-keun JI, Sang-kyoo HAN, Hyun-su GU, Hyo-hun KIM, Dong-kyun RYU, Heung-gyoon CHOI
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Patent number: 9496796Abstract: A multi-output power supply apparatus may include a transformer unit transforming a voltage level of input power using a primary winding and first and second secondary windings, a first output unit stabilizing power applied to the first secondary winding using a voltage multiplier circuit and outputting first power, and a second output unit stabilizing power applied to the second secondary winding and outputting second power.Type: GrantFiled: February 2, 2015Date of Patent: November 15, 2016Assignee: SOLUM CO., LTDInventors: Sang Gab Park, Hong Sun Park, Dong Kyun Ryu, Hyun Seo Park, Sang In Jang
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Patent number: 9374012Abstract: There is provided a power supply including a direct current (DC) to DC converter supplying main power to a load, and a sub converter connected to the DC to DC converter and reducing output loss, wherein the sub converter is operable based on a hold-up time.Type: GrantFiled: July 19, 2013Date of Patent: June 21, 2016Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Kook Kim, Chong Eun Kim, Sung Ho Kim, Dong Kyun Ryu
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Publication number: 20160079872Abstract: In an embodiment of the present invention, a power converter for applying a voltage to a load having at least one channel includes a power supply for storing and outputting a floating voltage lower than a forward voltage of the channel and a converter for receiving and converting a link voltage to generate a first voltage, thereby transmit the voltage higher than the forward voltage of the channel.Type: ApplicationFiled: September 8, 2015Publication date: March 17, 2016Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Dong Kyun RYU, Gie Hyoun KWEON, Sang Kyoo HAN
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Patent number: 9237616Abstract: A switching mode power supply apparatus includes a main transformer converting DC voltage of a predetermined amplitude supplied from a voltage source into DC voltage of a different amplitude; an auxiliary transformer operated by receiving current flowing in a primary winding of the main transformer; a first semiconductor switching element turning on/off an LED array that is driven by receiving voltage from a secondary winding of the auxiliary transformer; and an auxiliary circuit disposed in an LED control circuit unit including the LED array and the first semiconductor switching element, wherein the auxiliary circuit distributes current flowing in the first semiconductor switching element so as to reduce heat generated in the first semiconductor switching element.Type: GrantFiled: October 30, 2014Date of Patent: January 12, 2016Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jae Kuk Kim, Dong Kyun Ryu
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Publication number: 20160006361Abstract: A multi-output power supply apparatus may include a transformer unit transforming a voltage level of input power using a primary winding and first and second secondary windings, a first output unit stabilizing power applied to the first secondary winding using a voltage multiplier circuit and outputting first power, and a second output unit stabilizing power applied to the second secondary winding and outputting second power.Type: ApplicationFiled: February 2, 2015Publication date: January 7, 2016Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Gab Park, Hong Sun Park, Dong Kyun Ryu, Hyun Seo Park, Sang In Jang
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Patent number: 9154042Abstract: There is provided a power supply apparatus including an interleaved active clamp forward converter unit including a first active clamp forward converter and a second active clamp forward converter, and an output unit magnetically coupled to the forward converter unit and having an output path according to a duty ratio of the forward converter unit, wherein the output unit includes a third powering leg electrified when the first active clamp forward converter and the second active clamp forward converter are powered, and an output leg supplying power to a load.Type: GrantFiled: March 15, 2013Date of Patent: October 6, 2015Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Kuk Kim, Chong Eun Kim, Sung Ho Kim, Dong Kyun Ryu
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Publication number: 20150271883Abstract: A power supply device may include a switching unit receiving and switching direct current power to provide power, a converting unit converting primary power into secondary power having a voltage level depending on a preset turns ratio according to the switching of the switching unit and outputting the converted secondary power, a light emitting diode which is driven by the secondary power provided from the converting unit, and a controlling unit generating a control signal of the switching unit based on voltage information of the secondary power and current information from the light emitting diode.Type: ApplicationFiled: December 30, 2014Publication date: September 24, 2015Applicants: SAMSUNG ELECTRO-MECHANICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Jae Kuk KIM, Jae Hyun Kim, Jae Bum Lee, Gun Woo Moon, Dong Kyun Ryu
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Publication number: 20150115838Abstract: A switching mode power supply apparatus includes a main transformer converting DC voltage of a predetermined amplitude supplied from a voltage source into DC voltage of a different amplitude; an auxiliary transformer operated by receiving current flowing in a primary winding of the main transformer; a first semiconductor switching element turning on/off an LED array that is driven by receiving voltage from a secondary winding of the auxiliary transformer; and an auxiliary circuit disposed in an LED control circuit unit including the LED array and the first semiconductor switching element, wherein the auxiliary circuit distributes current flowing in the first semiconductor switching element so as to reduce heat generated in the first semiconductor switching element.Type: ApplicationFiled: October 30, 2014Publication date: April 30, 2015Inventors: Jae Kuk KIM, Dong Kyun RYU
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Publication number: 20150003125Abstract: There is provided a power supply having a surge protection circuit for protecting a product from a power surge by way of efficiently discharging a surge voltage or a surge current introduced through AC input power terminals to be applied to the product during the use of the product. The power supply having a surge protection circuit includes a discharging unit having discharge patterns disposed between power lines of input power terminals to discharge a surge voltage introduced into each of the power lines of the input power terminals; and a power supplying unit converting the power input via the input power terminals into predetermined power to supply the converted power.Type: ApplicationFiled: October 16, 2013Publication date: January 1, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kang Hee LEE, Jun Woo PARK, Sung Soo HONG, Jae Sun WON, Dong Kyun RYU, Seung Wan YU, Seung Ho HAN, Hwa Hun CHIN
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Publication number: 20140185329Abstract: There is provided a power supply apparatus including an interleaved active clamp forward converter unit including a first active clamp forward converter and a second active clamp forward converter, and an output unit magnetically coupled to the forward converter unit and having an output path according to a duty ratio of the forward converter unit, wherein the output unit includes a third powering leg electrified when the first active clamp forward converter and the second active clamp forward converter are powered, and an output leg supplying power to a load.Type: ApplicationFiled: March 15, 2013Publication date: July 3, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Kuk KIM, Chong Eun KIM, Sung Ho KIM, Dong Kyun RYU
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Publication number: 20140177283Abstract: There is provided a power supply including a direct current (DC) to DC converter supplying main power to a load, and a sub converter connected to the DC to DC converter and reducing output loss, wherein the sub converter is operable based on a hold-up time.Type: ApplicationFiled: July 19, 2013Publication date: June 26, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Kook KIM, Chong Eun KIM, Sung Ho KIM, Dong Kyun RYU
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Patent number: 8519641Abstract: An apparatus for driving a light emitting part includes a DC/DC converter for supplying an amplified driving voltage to the light emitting part; a constant current circuit for controlling a current flowing through the light emitting part; a converter controller for controlling the DC/DC converter and the constant current circuit; a current sensor for sensing and converting a current flowing to an anode of the light emitting part into a voltage; a feedback controller for controlling a feedback current according to a magnitude of the voltage from the current sensor; an optical coupling part for performing optical coupling to transmit the feedback current as a feedback voltage; and a main controller for determining whether an over-current is occurring according to a magnitude of the feedback voltage and stopping an operation of the converter controller when the over-current is occurring.Type: GrantFiled: December 8, 2010Date of Patent: August 27, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Peel Sik Jeon, Jae Han Yoon, Dong Kyun Ryu
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Publication number: 20130121038Abstract: Disclosed herein are a converter, a method for controlling the same, and an inverter. The converter includes: an input terminal having power input thereto; a first converter unit converting the power input to the input terminal to thereby output the converted power to an output terminal; and a second converter unit connected between the input terminal and the output terminal while being in parallel with the first converter unit, wherein each of the first and second converter units includes an active clamp unit provided at a primary side thereof and a synchronous rectifying unit provided at a secondary side thereof.Type: ApplicationFiled: May 29, 2012Publication date: May 16, 2013Inventors: Dong Kyun RYU, Tae Won LEE, Young Ho KIM, Chung Yuen WON, Yong Hyok JI
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Patent number: 8441270Abstract: There is provided an alternating current (AC) detection circuit for power supply, the AC circuit including: a rectifying part rectifying an AC voltage; a voltage division part dividing the voltage rectified by the rectifying part according to a preset division ratio; a voltage stabilization circuit part stabilizing the voltage divided by the voltage division part; and a first square wave generating part comparing the voltage stabilized by the voltage stabilization circuit part with an internal reference voltage, and generating a first square wave signal having a duty ratio according to comparison results between the stabilized voltage and the internal reference.Type: GrantFiled: December 30, 2009Date of Patent: May 14, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sung Uk Lee, Dong Kyun Ryu, Nam Su Koo, Kyung Hyun Kim, Seung Heun Yang, Tai Sung Kim, Jae Han Yoon, Peel Sik Jeon, Yun Seop Shin, Kyung Su Han
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Patent number: 8362790Abstract: There is provided an alternating current (AC) detection circuit for a power supply, the circuit including: a rectifying part rectifying an AC voltage; a voltage division part dividing the voltage rectified by the rectifying part according to a preset division ratio; a voltage stabilization circuit part stabilizing the voltage divided by the voltage division part; a comparing part comparing the voltage stabilized by the voltage stabilization circuit part with an internal reference voltage and generating an input detection signal when the stabilized voltage is higher than the internal reference voltage; and an output part outputting an AC detection signal when the input detection signal is inputted from the comparing part.Type: GrantFiled: December 2, 2009Date of Patent: January 29, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Sung Uk Lee, Dong Kyun Ryu, Kyung Hyun Kim, Seung Heun Yang, Tai Sung Kim, Jae Han Yoon, Peel Sik Jeon, Yun Seop Shin, Kyung Su Han