NON-ISOLATED BIDIRECTIONAL DC-DC CONVERTER HAVING IMPROVED STABILITY

摘要

Disclosed is a non-isolated bidirectional DC-DC converter having improved stability. The non-isolated bidirectional DC-DC converter includes a DC-DC converter unit including a pair of switching elements composed of a high-voltage switch and a low-voltage switch, which are switched to a boost mode or a buck mode as a response to a switching signal and an inductor connected to the high-voltage switch and the low-voltage switch; a first protection switch disposed between the high-voltage switch of the DC-DC converter unit and the high-voltage power source to serve as a back-to-back switch together with the high-voltage switch or the second protection switch; and a second protection switch disposed between the inductor of the DC-DC converter unit and the low-voltage power source to serve as a back-to-back switch together with the low-voltage switch or the first protection switch.