Snubber circuit, converter comprising the same and battery charging apparatus

A snubber circuit comprising:

• a capacitor;
• a first inductor connected to the capacitor at a first node;
• a second inductor connected to the capacitor at a second node;
• a third inductor connected to the capacitor and the first inductor at the first node;
• and
• a diode comprising one end connected to the third inductor at a third node and another end connected to the capacitor and the second inductor at the second node,
• wherein the first inductor and the second inductor are coupled inductors.

A battery charging apparatus comprising:

• a power source;
• and
• a converter comprising a switch and a snubber circuit, and configured to be supplied with a voltage from the power source to boost or drop the voltage,
• wherein the snubber circuit comprises coupled inductors, and
• wherein when the switch is short-circuited, an output current of the converter is adjusted by the coupled inductors.