| 摘要 |
PURPOSE: A DC-DC converter having a wide input voltage control range is provided to efficiently obtain a stable output voltage by supplementing an output voltage of an LLC resonant converter by using an interleaved flyback converter. CONSTITUTION: A main converter includes a resonant input unit and a resonant output unit. The resonant input unit receives an input voltage to induce a current change of a first winding end of a resonant transformer(T1). The resonant output unit is connected with a second winding end of the resonant transformer to generate a voltage corresponding to the current change of the first winding end and generates an output voltage by rectifying the voltage. An auxiliary converter includes an auxiliary input unit and an auxiliary output unit. When a voltage level of the input voltage is less than a designated standard voltage, the auxiliary converter is activated to increase a voltage level of the output voltage generated in the main converter. |
