摘要
本系统采用Boost升压斩波电路为核心电路,以功率因数校正控制芯片UCC28019产生的PWM波形作为控制信号,使电感交替的储存和释放能量,将24伏的交流输入电压升至36V的直流输出电压。测试结果表明:电源的交流输入电压和负载电流在比较宽的范围内变化时,电源输出直流电压能够保持较高的稳定性,具有良好的电压调整率和负载调整率,电源的功率因数达到0.995,效率有74%,此外,本系统还具有输出过压、欠压保护功能。该电路具有一定的实用价值。
The system uses Boost boost chopper circuit as the core circuit, With PWM waveform produced by power factor correction control chip UCC28019 as a control signal, the inductance alternating of storing and releasing energy, will be 24 v ac input voltage up to 36 v dc output voltage. Test results show that： the power of the AC input voltage and load current in a relatively wide range, power output DC voltage to maintain high stabil- ity, good line regulation and load regulation, The power factor of power supply is 0.995, the efficiency is 74%, in addition, the system also features output overvoltage, undervoltage protection. The circuit has some practical value
出处
《电子世界》
2017年第8期74-75,共2页
Electronics World
