Patent application number | Description | Published |
20140043879 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME, AND DRIVING METHOD OF POWER SUPPLY DEVICE - The present invention relates to a switch controller, a power supply including the same, and a method for driving the same. An AC input of the power supply is connected to a rectification circuit. The power supply includes a power switch to which an input current passed through the rectification circuit flows during an on-period and a switch controller, the switch controller detects a half-on time point that is the intermediate time point of the on-period, detects a sense voltage that is determined by a current flowing to the power switch during the on-period at the half-on time point, generates a modulation wave by controlling a reference wave according to the detected voltage, and controls switching operation of the power switch according to the modulation wave. | 02-13-2014 |
20140313798 | SWITCH CONTROL DEVICE, POWER SUPPLY DEVICE COMPRISING THE SAME AND DRIVING METHOD OF POWER SUPPLY DEVICE - The present invention relates to a switch controller, a power supply including the same, and a driving method thereof. An AC input of the power supply is connected to a rectification circuit. The power supply includes a power switch to which the AC input passed through the rectification circuit flows during a turn-on period of the power switch and a switch controller detecting a half-on time point that is an intermediate time point of the turn-on period, calculating the AC current using a result of sampling a sense voltage that depends on a current flowing to the power switch during the turn-on period at the half-on time point and the turn-on period, and controlling the input current to have a reference wave. | 10-23-2014 |
20150124499 | ACTIVE DAMPER AND POWER SUPPLY INCLUDING THE SAME - An active damper and a power supply according to exemplary embodiments include: a damper resistor coupled to an input voltage; a damper switch coupled in parallel with the damper resistor; and a capacitor to which a reset current generated by a leading edge of the input voltage flows. The damper switch is turned off by the reset current. | 05-07-2015 |
20150137859 | INPUT CURRENT CONTROL METHOD, SWITCH CONTROL CIRCUIT AND POWER SUPPLY INCLUDING THE SWITCH CONTROL CIRCUIT - A switch control circuit that controls a switching operation of a power switch includes: an input current calculator generating an input sense voltage by integrating a sense voltage that indicates a switching current flowing to the power switch for a switching period unit of the power switch; and an input current comparator generating a gate-off signal according to a result of comparison between the input sense voltage and a predetermined input reference voltage, wherein the power switch is turned off according to the gate-off signal. | 05-21-2015 |
20150155860 | CLAMPING CIRCUIT, POWER SUPPLY DEVICE INCLUDING THE SAME AND DRIVING METHOD OF POWER SUPPLY DEVICE - A power supply includes a power switch and a switch control circuit controlling a switching operation of the power switch using a comparison voltage generated according to an output, determining a clamping voltage by sensing an input voltage during a start-up period, and clamping the comparison voltage to the clamping voltage during the start-up period. | 06-04-2015 |
20150207418 | PRIMARY SIDE REGULATION POWER SUPPLY DEVICE - A primary-side regulation (PSR) power supply device according to the invention includes: a power switch; an auxiliary wiring from which an auxiliary voltage that depends on an output voltage is generated during a turn-off period of the power switch and being provided in a primary side; a clamping circuit clamping a voltage corresponding to the auxiliary voltage to a predetermined voltage; a voltage follower decreasing the sense voltage according to a decrease of the auxiliary voltage; and a switch control circuit controlling a switching operation of the power switch by using the sense voltage. | 07-23-2015 |
20150280581 | POWER SUPPLY DEVICE - A power supply device includes a power switch, a power delivering means configured to convert an input in accordance with switching operation of the power switch and output a result, and a switch control circuit configured to linearly control switching frequency of the power switch in accordance with an output detection voltage corresponding to an output voltage according to the output. | 10-01-2015 |
20160006360 | POWER SUPPLY DEVICE - A power supply device according to the present invention includes: a filter capacitor coupled to a line to which an input voltage that is passed through a dimmer is supplied; a discharge switch coupled to the filter capacitor through the line; and a main switch receiving the input voltage and controlling power transmission. The power supply device performs input voltage control for shaping the input voltage with a predetermined pattern using the discharge switch. | 01-07-2016 |