无逆变高效率UPS电源

液晶显示器已取代传统CRT显示器，个人电脑的主机和显示器都由直流供电；在新型UPS中可将交流220V整流滤波成300V直流电，或将电池电压经DC/DC升压至300V，后将300V直流电经DC／DC转换成计算机所需的各组直流电，无需再逆变回交流220V；这种利用高效率的DC／DC转换器设计无逆变电路的UPS电源，可节省UPS电源的能量损耗和成本，并进一步提高电路的可靠性。

High-efficiency UPS without Inverter

LCD has already replaced the traditional display of CRT, the host computer and display all use the power supply of DC.In the new UPS, we can transform AC 220V to DC 300V by rectificating and filtering, or transform battery’s voltage to DC 300V by DC/DC converter, and then ,we can convert DC 300V to all kinds of voltage for PC, don’t change to AC 220V again. In this way, make use of a high-efficiency DC/DC converter to design an UPS without inverter, can save the energy loss and costs of the UPS, and can further raise the reliability of the circuitry.