摘要
对于具有交流市电输入同时又有直流输入的开关稳压电源,在将交流转换为与直流输入同一电压等级的直流电后,再通过第二级开关稳压成为所需的直流电压的基础上,提出交流市电与48V直流用同一输入端口的单管的解决方案,进而通过采用级联的电路拓扑将输入电压范围扩展到20～370V直流或20～264V交流输入的小功率开关稳压电源,并给出了详尽的设计过程。
Switch regulated power supply that has the AC line and DC or battery input at the same time,after AC convert is applied to acquire the same voltage level as the DC or battery,DC is acquired at the second level of the switch regulated, on the basis of that,the solution that AC line and 48VDC or battery input at the same single transistor is submitted, and cascade circuit is applied to expand input voltage category to 20V～370VDC or 20V～264VAC input low power switch regulated power supply.
出处
《电源世界》
2007年第5期30-33,共4页
The World of Power Supply
关键词
极宽输入电压范围
单管变换
级联变换器
upper wide input voltage category single transistor convert cascade converter
