基于LM2596的不间断直流电源设计  

Design of uninterruptible DC power supply based on LM2596

作　　者：潘传勇[1] 丁国臣[1] 陈世夏[1] 

机构地区：[1]海军航空工程学院青岛校区,山东青岛266041

出　　处：《现代电子技术》2013年第17期107-109,共3页Modern Electronics Technique

摘　　要：设计的不间断直流工作电源,采用开关电压调节器LM2596进行DC DC变换,能够输出3 A的驱动电流,同时具有很好的负载调节特性。在主电源断电时,电路通过继电器自动将蓄电池切入,给设备供电。在主电源正常时,以不同模式给蓄电池充电:当电压大于设定值时,恒压充电;当电压低于设定值时,恒流充电。系统可以通过继电器对电路进行过流保护与欠压保护。系统结构简单,整体性能稳定,性价比较高。An uninterruptible DC power supply is designed, which uses the switching voltage regulator LM2596 to conduct DC-DC transformation, and outputs the drive current of 3 A. The power supply has very good load regulation characteristics. When the primary power supply is switched off, the battery is pitched in through the relay automatically to power the device. When the primary power supply is normal, the battery is charged in different modes： when the voltage is greater than the set value, it is charged in constant voltage; when the voltage is lower than the set value, it is charged in constant current. The overcurrent protection and under-vohage protection to the circuit are realized by the relay of the system. The system＇s structure is simple, its overall performance is stable, and its cost-performance is high.

关 键 词：DC-DC 不间断电源 LM2596 切换电路 

分 类 号：TN710-34[电子电信—电路与系统]