本质安全Boost开关电源的设计  

Design and Research of Essential Safety Boost Switch Power

作　　者：李娜[1] 杨玉岗[1] 

机构地区：[1]辽宁工程技术大学电气控制工程学院,辽宁葫芦岛125105

出　　处：《电气传动》2011年第6期19-22,共4页Electric Drive

摘　　要：为了满足煤矿、石油等危险环境下的要求,直流开关电源必须具有本质安全的特性。基于UC3845控制的Boost开关电源的设计,采用MIC5158芯片达到双重过压过流保护,对电路参数进行合理设计,使电路工作在电流连续模式下,输出纹波电压在设计要求的范围内,满足输出本质安全开关电源的设计。通过仿真和实验验证了设计的可行性。In order to meet the requirements under mine and petroleum dangerous environment, DC switch power supply must have essential safety features. The design of the Boost switch power bases on the UC3845 control,which uses MIC5158 chip to achieve the double over-voltage and over-current protection. The parame- ters of circuit are reasonable designed . The circuit works in CCM mode and the output ripple voltage meets the design requirements, which meet the output essential safety design. The simulation and experiment prove that the design is feasible.

关 键 词：BOOST变换器 UC3845 MIC5158 电感电流 输出纹波电压 

分 类 号：TP17[自动化与计算机技术—控制理论与控制工程]