Abstract: There are a power module and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage switching input power to correct a power factor thereof; a DC/DC conversion stage switching the power of which the power factor has been corrected by the power factor correction stage to convert the power into preset DC power; a control unit controlling the power factor correction stage and the DC/DC conversion stage to perform a power conversion operation in a preset powered mode and stopping the power conversion operation of the DC/DC conversion stage in a preset idle mode; and a reference voltage supply unit supplying a preset reference voltage to the DC/DC conversion stage in the idle mode.

Abstract: A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.

Abstract: There are provided an apparatus for and a method of controlling a power supply system. The apparatus for controlling a power supply system includes an offset correction circuit equally dividing an input voltage into n (n is a natural number larger than 2) and outputting n divided voltages, and a control unit using an analog-to-digital converter (ADC) to detect the n divided voltages output from the offset correction circuit, and determining a difference in levels between a value of the detected n divided voltages and a value calculated by dividing the input voltage by n, as an offset correction value.

Abstract: 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.

Abstract: There are provided a power module in which a bias voltage is varied and supplied to a control circuit controlling power conversion when an idle mode is switched to a normal mode, and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage; a DC/DC conversion stage switching power to convert the power into pre-set DC power in a powering mode in which normal power is output; a standby stage converting the power into pre-set standby power in a cold standby mode in which the DC/DC conversion stage outputs power having a level lower than that of normal power; and a variable bias supply unit varying a voltage level of bias power for controlling DC/DC power conversion and supplying the same to the DC/DC conversion stage in the cold standby mode and the powering mode.

Abstract: There is provided a power supply, including, a boost converter unit including a first boost converter having a first inductor, a first diode, and a first switching element, and a second boost converter having a second inductor, a second diode and a second switching element, an input voltage sensing unit sensing an input voltage applied to the boost converter unit, a control unit selecting one of a first boost mode in which current is divided between the first inductor and the second inductor, based on the input voltage, and a second boost mode in which current flows through the first inductor and the second inductor in this order, based on the input voltage, and a switching unit selecting one of the first boost mode and the second boost mode, based on the selection of the control unit.

Abstract: There is provided a resonance-type power supply apparatus capable of controlling primary side switching by estimating output power based on resonance current of the primary side. The resonance-type power supply apparatus includes a switching unit switching input power, a transformer including a primary winding receiving the power switched by the switching unit and a secondary winding magnetically coupled to the first winding and having a preset turns ratio, and transforming the received switched power according to the turns ratio, a resonance unit electrically connected between the switching unit and the transformer and providing a resonance tank resonating with inductance from the transformer, and a controlling unit controlling the switching of the switching unit based on resonance power information input to the primary winding of the transformer by the resonance unit.

Abstract: 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.

Abstract: There is provided a phase shift full bridge (PSFB) type power supply device controlling a switching on time of lagging leg switches according to a load state. The power supply device includes a power supply unit supplying preset DC power by switching input power using a full bridge by a phase shift method; and a control unit controlling a switching time of a switch of the full bridge according to a load state in which the DC power is received from the power supply unit.

Abstract: A power supply apparatus may include a main power supply unit including a transformer switching and transforming input power and converting the input power into main power having a preset magnitude to provide the main power to a main output terminal, a power transferring unit providing the main power to a standby power supply unit, and a standby power supply unit including an auxiliary winding coupled to the transformer, providing operating power to a first controller by the auxiliary winding and receiving the main power to provide the main power to a second controller and a standby output terminal when the main power supply unit is operated.

Abstract: A power supply apparatus may include: a power supplying unit switching input power and supplying driving power; and a controlling unit controlling supplying of power by the power supplying unit by fixing a power switching phase and duty to a preset value and varying a switching frequency thereof in a case in which a load state of the power supplying unit is equal to a preset load state or above, and by varying the power switching phase and the switching frequency of the power supplying unit in a case in which the load state of the power supplying unit is a preset load state or less.

Abstract: A power supply apparatus and a method of controlling the same. The power supply apparatus includes a DC/AC converting unit; a transformer; a AC/DC converting unit; and a loss compensating unit disposed before an inductor in a secondary side output stage of the transformer and compensating for power loss due to the inductor in a light load condition. The loss compensating unit is a circuit comprising a capacitor and a semiconductor switch element connected in series. The semiconductor switch element is turned off in a load condition greater than a light load and turned on in a light load condition according to a control instruction from an external control unit.

Abstract: A power supply apparatus includes a master circuit part charging a snubber capacitor initially and supplying power to a load under a light load; and a slave circuit part having a common output terminal with the master circuit part and supplying power to the load under a heavy load along with the master circuit part by distributing the load between them, wherein each of the master circuit part and the slave circuit part has the respective snubber capacitor that is chargeable and dischargeable at a secondary side of a transformer thereof. By doing so, power loss in a system can be reduced and efficiency under a light load improved.

Abstract: A power supply apparatus includes a master circuit part charging a battery initially, supplying energy to a load that is a light load, and charging the battery when discharged; and a slave circuit part having a common output terminal with the master circuit part and supplying energy to the load that is a heavy load along with the master circuit part by distributing the load among them, wherein the master circuit part includes a rechargeable battery therein. Energy is supplied to a load using a battery at a low load that is a half load or less in a power supply circuit, thereby increasing energy efficiency.

Abstract: There is provided a power supply apparatus which varies the state of operating power used for powering a main power supply depending on a load condition. The power supply apparatus includes: a standby power supply unit performing power-conversion on an input power to provide a predetermined standby voltage; and an operating power supply unit changing power transfer paths according to a predetermined load condition of a main power and varying states of an operating voltage used for power-conversion on the main power, to supply the varied operating voltage.

Abstract: There is provided a power supply device, including an insulating direct current to direct current (DC/DC) converter unit including a primary side winding and a secondary side winding inductively coupled to the primary side winding and inducing a voltage in the secondary side winding in a first direction or a second direction, and a boost unit including a first boost converter boosting the voltage induced in the secondary side winding, in a first mode in which the voltage is induced in the secondary side winding in the first direction, and a second boost converter boosting the voltage induced in the secondary side winding, in a second mode in which the voltage is induced in the secondary side winding in the second direction.

Abstract: A power supply device may include: a standby power unit converting a direct current (DC) voltage to an operating voltage and a first standby voltage and providing the first standby voltage to a standby output terminal; a DC/DC converting unit receiving the operating voltage from the standby power unit, converting the DC voltage to a main voltage, and providing the main voltage to a main output terminal; and a main/standby power unit converting the main voltage from the DC/DC converting unit to a second standby voltage and providing the second standby voltage to the standby output terminal. The standby power unit varies a magnitude of the first standby voltage based on whether or not the second standby voltage is supplied to the standby output terminal.

Abstract: There is provided a rectifier circuit, including a rectifying unit rectifying input power to output rectified power corresponding to a magnitude of the input power and including a plurality of rectifier diodes, a first capacitor connected in parallel to any one of the plurality of rectifier diodes, a switch element connected to the first capacitor in series and controlling energy accumulation or discharge of the first capacitor according to a switching operation, and a controlling unit controlling the switch element based on the magnitude of the input power.

Abstract: There is provided a resonance-type power supply apparatus capable of controlling primary side switching by estimating output power based on resonance current of the primary side. The resonance-type power supply apparatus includes a switching unit switching input power, a transformer including a primary winding receiving the power switched by the switching unit and a secondary winding magnetically coupled to the first winding and having a preset turns ratio, and transforming the received switched power according to the turns ratio, a resonance unit electrically connected between the switching unit and the transformer and providing a resonance tank resonating with inductance from the transformer, and a controlling unit controlling the switching of the switching unit based on resonance power information input to the primary winding of the transformer by the resonance unit.

Abstract: There is provided a power supply apparatus supplying driving power. The power supply apparatus includes: a first power converter bypassing input power when a voltage level of the input power having a predetermined voltage level is within a reference voltage level range, and converting the input power to DC power having a preset voltage level when the voltage level of the input power is outside of the reference voltage level range; and a second power converter converting the power inputted from the first power converter to driving power having a preset voltage level.