Patent ID: 7630219
Filing Date: 2009-12-08
Classification: H02M,Y02B

Abstract:
1. A direct current (DC) to DC converter comprising: a transformer which comprises a primary winding which is connected in series with an input voltage, and a secondary winding which generates an induced current when the input voltage is applied to the primary winding; a switching part which is connected to the primary winding and performs a switching operation according to a control signal; a first delay part which delays an increasing rate of voltage between open nodes according to a turned-off state of the switching part and supplies a discharge current when the switching part is turned-on; a second delay part which delays a current flow in the switching part when the first delay part discharges the current when the switching part is turned-on; and a switching control part which senses a voltage output from the primary winding and applies a turn-on control signal to the switching part if the voltage is a minimum voltage when the switching part is turned-off.