Patent ID: 8395915
Filing Date: 2013-03-12
Classification: H02M

Abstract:
1. A DC/DC converter, comprising: a power supply unit including a transformer, the transformer including a constant current converting unit including boost the second voltage to a third voltage that is higher than the second voltage when driving the load, and output a fourth voltage when not driving the load, wherein a high-voltage terminal of the first secondary side is connected to a second side of the load, so that a sum of the first voltage and the third voltage is supplied to the load when driving the load a sum of the first voltage and the fourth voltage is supplied to the load when not driving the load, the load has a turn-ON voltage such that the load is turned OFF when a voltage supplied to the load is lower than the turn-ON voltage and turned ON when the voltage supplied to the load is equal to or higher than the turn-ON voltage, and the sum of the first voltage and the third voltage is equal to or higher than the turn-ON voltage of the load, and the sum of the first voltage and the fourth voltage is lower than the turn-ON voltage of the load.