ACTIVE DAMPING CIRCUIT, ACTIVE DAMPING METHOD, POWER SUPPLY DEVICE COMPRISING THE ACTIVE DAMPING CIRCUIT
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United States of America Patent
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Issued Date -
Dec 26, 2013
app pub date -
Jun 20, 2013
filing date -
Jun 21, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An active damping circuit according to an exemplary embodiment of the present invention is applied to a power supply using an input voltage that is generated by rectifying an AC input passed through a dimmer. The active damping circuit includes: an active damper including a damper resistor coupled to the input voltage and a damper switch coupled in parallel with the damper resistor; and an active damping controller controlling a switching operation of the damper switch using a high voltage switch that generates a predetermined power voltage to control a resistance value of the active damper of a firing period of the input voltage to be higher than a resistance value of the active damper of other periods, excluding at least the firing period among a period during which the input voltage is generated.
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