一种基于TPS54340的电压自动转换电路的设计解析  

作　　者：王铂智 张茂林 戴蓉 王海军[1] 

机构地区：[1]延安大学西安创新学院,陕西西安710100

出　　处：《科学与信息化》2018年第24期92-93,共2页Technology and Information

摘　　要：设计一种基于TPS54340芯片的正负极性开关电源,可以将输入的直流电压转换为正负两种极性的直流电压输出,实现正极性直流电压向负极性电压的转化。电路主要采用TPS54340降压芯片搭建外围电路,通过ARM芯片引脚高低电平变化,转换外围电路输出的电压极性。设计较传统开关电源,能够高效率、低功耗、高精度的输出正负两种极性的直流电压,将广泛应用于对电源有较高要求的电子设备上。The design of a kind of positive and negative polarity based on TPS54340 chip switching power supply, can convert the input dc voltage to the positive and negative two polarity dc voltage output, to achieve positive polarity dc voltage to the negative polarity dc voltage conversion. Circuit mainly adopts TPS54340 build the structures circuit, and the voltage polarity of the peripheral circuit output is converted by the voltage of the ARM chip. Can this design than traditional switching power supply, high efficiency, low power consumption, high precision of output plus or minus two polarity dc voltage, will be widely applied to have higher request for the power electronic devices.

关 键 词：TPS54340 蓝牙 正负极性 开关电源 

分 类 号：TN86[电子电信—信息与通信工程]