A DC converter is a device that converts a voltage of direct current into another type or voltages of direct current. It is divided into two types: a parallel DC converter and a non-parallel DC converter. The parallel DC converter uses advanced high-frequency pulse width modulation edge resonance technology to greatly improve efficiency. The whole machine has the characteristics of high voltage regulation precision, fast dynamic response, low output noise, strong anti-interference ability and wide operating temperature range. The non-parallel DC converter is composed of imported DC-DC module, which has the advantages of high voltage regulation precision, low output noise and strong anti-interference ability, and is small in size and light in weight.