Patent application number | Description | Published |
20140084693 | GATE DRIVING CIRCUIT AND INVERTER HAVING THE SAME - 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. | 03-27-2014 |
20140119070 | POWER FACTOR CORRECTION CIRCUIT AND METHOD FOR CONTROLLING POWER FACTOR CORRECTION - 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. | 05-01-2014 |
20140119079 | POWER FACTOR CORRECTION CIRCUIT AND POWER SUPPLY DEVICE INCLUDING THE SAME - 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. | 05-01-2014 |
20140152271 | POWER FACTOR CORRECTION APPARATUS AND METHOD FOR CORRECTING POWER FACTOR USING THE SAME - 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. | 06-05-2014 |
20140153299 | POWER FACTOR CORRECTION DEVICE - 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. | 06-05-2014 |
20140153307 | DRIVER DEVICE FOR POWER FACTOR CORRECTION CIRCUIT - 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. | 06-05-2014 |
20140160815 | POWER FACTOR CORRECTION CIRCUIT - 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. | 06-12-2014 |
20140160816 | POWER FACTOR CORRECTION CIRCUIT AND POWER SUPPLY INCLUDING THE SAME - 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. | 06-12-2014 |
20140167123 | POWER SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME - 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. | 06-19-2014 |
20140177288 | FLYBACK CONVERTER - 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. | 06-26-2014 |
20140184175 | DRIVING APPARATUS FOR DRIVING POWER FACTOR CORRECTION CIRCUIT - There is provided a driving apparatus for driving an interleaved power factor correction circuit including a first main switch and a second main switch performing a switching operation with a predetermined phase difference and a first auxiliary switch and a second auxiliary switch forming a transformation path for surplus power existing before an ON operation of the first main switch and a second main switch, respectively, including: an input unit obtaining an input signal; a current sensing unit obtaining information regarding a current of the interleaved power factor correction circuit; and an output unit outputting a first control signal with respect to the first main switch, a third control signal with respect to the second main switch, a second control signal with respect to the first auxiliary switch, and a fourth control signal with respect to the second auxiliary switch, based on the input signal and the current information. | 07-03-2014 |
20140185242 | POWER SEMICONDUCTOR MODULE - 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. | 07-03-2014 |
20140266033 | POWER CHARGING APPARATUS AND BATTERY APPARATUS - A power charging apparatus and a battery apparatus quickly charge a battery with power by separately charging each battery cell with power. The power charging apparatus includes: a power supplier supplying power; and a charging part having at least two chargers corresponding one-to-one to at least two battery cells connected to each other in parallel, each of the at least two chargers charging the corresponding battery cell with power transmitted from the power supplying unit. The battery apparatus includes: a battery having at least two battery cells connected to each other in parallel; and a charging part having at least two chargers corresponding one-to-one to the at least two battery cells and charging the at least two chargers with power received. | 09-18-2014 |