| 摘要 |
Disclosed are a switching power supply device and a battery charger including the same. The switching power supply device according to one embodiment of the present invention includes a full-bridge circuit which includes a plurality of switching elements, a transformer which includes a primary coil which is connected to the output terminal of the full-bridge circuit and a secondary coil, a DC/DC converter which includes a plurality of diodes and a rectification circuit which is connected to the secondary coil and rectifies a voltage outputted from the secondary coil, and a snubber circuit which includes a first snubber diode which is connected to the central point of the secondary coil, a second snubber diode which is serially connected to the first snubber diode and is connected to one end of an output capacitor and a snubber capacitor which is connected between the output terminal of the positive side of the rectification circuit and a node between the first snubber diode and the second snubber diode. |
