Patents by Inventor In Wha Jeong
In Wha Jeong 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: 20140185242Abstract: There is provided a power semiconductor module in which power semiconductor elements, integration of which may be difficult due to heating, are modularized. The power semiconductor module includes: a heat dissipation substrate electrically connected to a common connection terminal; and a plurality of electronic elements disposed on the heat dissipation substrate, wherein the electronic elements have varying spaces therebetween.Type: ApplicationFiled: March 7, 2013Publication date: July 3, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kwang Soo KIM, Tae Hyun KIM, Bum Seok SUH, In Wha JEONG, Young Ki LEE
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Publication number: 20140177288Abstract: There is provided a flyback converter, including: a power supply unit supplying input power; a transformer unit including first and second transformers converting first and second primary current from the power supply unit into first and second secondary current, respectively; a main switch unit including first and second main switches respectively intermitting the first and second primary current flowing in respective primary windings of the first and second transformers; an auxiliary switch unit including first and second auxiliary switches forming respective transfer paths for dump power present before the first and second main switches are switched on; and an auxiliary inductor unit including first and second auxiliary inductors respectively adjusting the amount of current flowing in the first and second auxiliary switches during the switching operation thereof, wherein the first and second main switches perform a switching operation while having a predetermined phase difference therebetween.Type: ApplicationFiled: March 11, 2013Publication date: June 26, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha Jeong, Bum Seok Suh, Kwang Soo Kim
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Publication number: 20140167123Abstract: There is provided a power semiconductor device including: a body region having a first conductivity; a well formed in an upper portion of the body region and having a second conductivity; and a conductive via formed in the body region while traversing the well.Type: ApplicationFiled: December 9, 2013Publication date: June 19, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kwang Soo KIM, Bum Seok SUH, In Wha JEONG, Ji Hyun PARK, Jaehoon PARK
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Publication number: 20140160816Abstract: There are provided a power factor correction circuit and a power supply including the same, the power factor correction circuit including a main switch adjusting a phase difference between a current and a voltage of input power, a main inductor storing or discharging the power according to switching of the main switch, a snubber circuit unit including a snubber switch forming a transfer path for surplus power present before the main switch is turned on and a snubber inductor adjusting an amount of a current applied to the snubber switch, and a reduction circuit unit reducing excessive power imposed on the snubber switch by varying inductance of the snubber inductor.Type: ApplicationFiled: February 28, 2013Publication date: June 12, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Hyo Jin LEE
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Publication number: 20140160815Abstract: There is provided a power factor correction circuit including: a main switching unit including a first main switch and a second main switch performing a switching operation to regulate a phase difference between a current and a voltage of input power, respectively; a main inductor unit including a first main inductor and a second main inductor accumulating or discharging energy according to a switching operation of each of the first main switch and the second main switch; a snubber switching unit including a first snubber switch and a second snubber switch providing zero-voltage turn-on conditions to the first main switch and the second main switch, respectively; and a controller controlling a switching operation of the main switching unit and the snubber switching unit.Type: ApplicationFiled: February 28, 2013Publication date: June 12, 2014Applicant: Samsung Electro-mechanics Co., LtdInventors: In Wha JEONG, Bum Seok SUH, Hyo Jin LEE
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Publication number: 20140160817Abstract: There are provided a power factor correction circuit, and a power supply including the same, the power factor correction circuit including a main switch adjusting a phase difference between a current and a voltage of input power, a main inductor storing or discharging the power according to switching of the main switch, a snubber circuit unit including a snubber switch forming a transfer path for surplus power present before the main switch is turned on and a snubber inductor adjusting an amount of a current applied to the snubber switch, and a reduction circuit unit including an auxiliary inductor inductively coupled to the snubber inductor and an auxiliary resistor consuming power induced from the snubber inductor through the auxiliary inductor.Type: ApplicationFiled: February 28, 2013Publication date: June 12, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Kwang Soo KIM
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Publication number: 20140153307Abstract: There is provided a driver device for a power factor correction circuit including first and second main switches that are switched on and off with a phase difference therebetween, and first and second auxiliary switches that provide conduction paths of surplus voltage in the first and second main switches before the first and second main switches are switched on, the driver device including: an input unit receiving a plurality of input signals; and an output unit outputting a first control signal for the first main switch, a second control signal for the second main switch, a third control signal for the first auxiliary switch, and a fourth control signal for the second auxiliary switch based on a plurality of input signals.Type: ApplicationFiled: December 3, 2013Publication date: June 5, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Chang Jae HEO, Bum Seok SUH, Jae Hyun LIM
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Publication number: 20140152271Abstract: There are provided a power factor correction device and a method for controlling power factor correction using the same. The power factor correction device includes a power factor correction circuit and a control circuit. The power factor correction circuit includes first and second inductors connected to an input power source stage and first and second main switches performing a switching operation on the first and second inductors, respectively. The control circuit may provide control signals to the first and second main switches, respectively, and when phase currents flowing in the respective first and second inductors are unbalanced, the control circuit may change a phase of at least one of the first and second main switches to correct an imbalance of the phases.Type: ApplicationFiled: April 12, 2013Publication date: June 5, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Kwang Soo KIM
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Publication number: 20140152208Abstract: There is provided a power factor correction device including, a first switch switching input power to adjust a phase difference between a current and a voltage of the input power, a second switch switched on before the first switch is switched on to form a transfer path for residual power in the first switch, a first inductor charging and discharging energy according to switching of the first switch, and a second inductor adjusting an amount of current flowing through the second switch according to switching of the second switch, wherein the first inductor and the second inductor are inductively coupled.Type: ApplicationFiled: March 1, 2013Publication date: June 5, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Min Gyu PARK
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Publication number: 20140153299Abstract: There is provided a power factor correction device including: a main switching unit including a first main switch and a second main switch performing a switching operation with predetermined phase differences; an auxiliary switching unit including a first auxiliary switch and a second auxiliary switch forming a transmission path for surplus power existing before the first main switch and the second main switch are turned on, respectively; an inductor unit positioned between a power input unit to which AC power is applied and the main switching unit and accumulating or discharging energy according to a switching operation of the main switching unit; and an auxiliary inductor unit regulating an amount of current flowing in the auxiliary switching unit in the event of a switching operation of the auxiliary switching unit.Type: ApplicationFiled: March 15, 2013Publication date: June 5, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Min Gyu PARK
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Publication number: 20140119079Abstract: There are provided an interleaved power factor correction circuit and a power supply device including the same, the power factor correction circuit including: a main switching unit including a first main switch and a second main switch; an auxiliary switching unit including a first auxiliary switch and a second auxiliary switch; an inductor unit positioned between an input power terminal to which the input power is applied and the main switching unit and storing or discharging power according to the switching operations of the main switching unit; and an auxiliary inductor adjusting an amount of current flowing in the auxiliary switching unit when the auxiliary switching unit performs switching operations.Type: ApplicationFiled: January 14, 2013Publication date: May 1, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH, Kwang Soo KIM, Hyo Jin LEE
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Publication number: 20140119070Abstract: Disclosed herein is a power factor correction circuit, including: a boost converter circuit in which a plurality of boost circuits including a boost inductor, a rectifying diode, and a boost switch are connected with each other; and a snubber circuit including a snubber inductor and a snubber switch so as to snubber the boost converter circuit. The snubber inductor is controlled so as to be turned on before the boost inductor is turned on to apply zero voltage to the boost inductor. It is possible to reduce switching loss occurring when the boost switch is turned on and increase efficiency of an AC-DC power supply apparatus.Type: ApplicationFiled: February 8, 2013Publication date: May 1, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha Jeong, Kee Ju Um, Bum Seok Suh, Kwang Soo Kim, Min Gyu Park
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Patent number: 8711588Abstract: There is provided a power supply device including an alternating current (AC) power supply unit supplying a first primary current in a positive half cycle and supplying a second primary current in a negative half cycle; a transformer unit including a first transformer and a second transformer; a main switch unit including a first main switch and a second main switch; an auxiliary switch unit including a first auxiliary switch and a second auxiliary switch; an auxiliary inductor unit including a first auxiliary inductor and a second auxiliary inductor; and a path providing unit providing a conduction path based on power supplied from the AC power supply unit.Type: GrantFiled: March 15, 2013Date of Patent: April 29, 2014Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: In Wha Jeong, Bum Seok Suh, Hyo Jin Lee
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Publication number: 20140098586Abstract: There is provided an inverter including: an inverter unit including at least one inverter arm having a plurality of switches, and switching the input power according to control to output an alternating current power; at least one driving unit including at least one high voltage gate driving unit having a plurality high voltage gate drivers connected to one another in series between an input terminal of an instruction signal instructing a switching control of an inverter unit and an output terminal of a control signal controlling switching of the inverter unit to control switching driving of a high side switch and including at least one low voltage gate driver to control switching driving of a low side switch; and at least one bootstrap unit charging/discharging and dividing a voltage generated at the time of switching the plurality of switches according to switching control of the driving unit.Type: ApplicationFiled: February 15, 2013Publication date: April 10, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH
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Publication number: 20140084693Abstract: An inverter includes an inverter unit including at least one inverter arm having at least one high side switch and at least one low side switch connected to each other in series between a ground and an input power terminal providing input power having a preset voltage level, and switching the input power to output AC power; and a high voltage gate driving circuit unit including at least one high voltage gate driving unit having a plurality of high voltage gate drivers connected in series between an input terminal of an instruction signal requesting a switching control of the inverter unit and an output terminal of a control signal controlling switching of the inverter unit, such that switching of the high side switch is controlled, and voltage generated at the time of switching the high side switch is divided and applied to the plurality of high voltage gate drivers.Type: ApplicationFiled: February 19, 2013Publication date: March 27, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: In Wha JEONG, Bum Seok SUH
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Publication number: 20130343002Abstract: Disclosed herein is a heat dissipation system for a power module, including: first cooling medium flow parts and second cooling medium flow parts allowing cooling media to flow in first and second directions, respectively.Type: ApplicationFiled: September 11, 2012Publication date: December 26, 2013Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kwang Soo Kim, Do Jae Yoo, Young Ho Sohn, Bum Seok Suh, In Wha Jeong
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Patent number: 7998937Abstract: The present invention relates to a flavonoid compound having an antiviral activity, more particularly to a flavonoid compound obtained by extracting Houttuynia cordata with methanol and separating/purifying with chromatography, a method for efficient extraction and purification of the same and an antiviral composition comprising the compound as an active ingredient.Type: GrantFiled: November 3, 2006Date of Patent: August 16, 2011Assignee: Korea Research Institute of Bioscience and BiotechnologyInventors: Dur Han Kwon, Wha Jeong Choi, Choong Hwan Lee, Jin Hee Kim, Man Bae Kim
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Publication number: 20110188272Abstract: Provided herein is a fusion energy extraction circuit (FEEC) device having a grid-tied bidirectional converter and a resonant converter. The resonant converter can include an inverse cyclotron converter with two or more or quadruple plates and a plurality of circuit switches. The bidirectional converter can include a three-phase grid-tied converter. The FEEC device is capable of decelerating plasma particle beams, thereby extracting the energy from the deceleration, converting the extracted energy to electric energy, and sending the electric energy to a power grid.Type: ApplicationFiled: June 29, 2009Publication date: August 4, 2011Inventors: Keyue Smedley, Frank Wessel, Mingying Gu, In Wha Jeong
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Publication number: 20100074975Abstract: Disclosed herein is a pharmaceutical composition having preventative and therapeutic effects on liver diseases, comprising an extract from Lonicera caerulea L. var. edulis. The composition has preventative and therapeutic effects on hepatitis, liver cirrhosis, fatty liver, and the like.Type: ApplicationFiled: July 7, 2006Publication date: March 25, 2010Inventors: Ju Hwan Eum, Man Chul Suh, Dur Han Kwon, Byeong ku Yoon, Wha jeong Choi, Kyung mi Kwon, Chan soo Kim
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Publication number: 20090171074Abstract: The present invention relates to a flavonoid compound having an antiviral activity, more particularly to a flavonoid compound obtained by extracting Houttuynia cordata with methanol and separating/purifying with chromatography, a method for efficient extraction and purification of the same and an antiviral composition comprising the compound as an active ingredient.Type: ApplicationFiled: November 3, 2006Publication date: July 2, 2009Inventors: Dur Han Kwon, Wha Jeong Choi, Choong Hwan Lee, Jin Hee Kim, Man Bae Kim