基于TL494升压型DC-DC稳压电源的设计  

Design of DC-DC Power Supply Based on TL494 Boost

作　　者：贾正松[1] 罗凌[1] 佘青松 

机构地区：[1]四川信息职业技术学院电气工程系,四川广元628017 [2]重庆军代局驻广元地区081军代室,四川广元628017

出　　处：《兵工自动化》2014年第6期86-89,共4页Ordnance Industry Automation

基　　金：广元市科学技术和知识产权局资助项目(广科知发〔2013〕38号)

摘　　要：根据开关电源在各种电子产品中的发展趋势,介绍一种12 V转24 V的升压型DC-DC稳压电源。该电源采用TL494作为控制器件,根据其工作原理,合理选择了电源中的开关管、滤波电容、储能电感和续流二极管的参数设计,利用脉冲宽度调制技术进行电路控制,并通过控制开关管的导通时间,保持输出电压的稳定。仿真测试结果表明:该电路输出电压满载时变换效率大于70%,具有较高的安全性和可靠性。According to the development trend of switching power supply in a variety of electronic products, introduce a 12 V transfer 24 V step-up DC-DC power supply. The power supply uses TL494 as a control device, according to its working principle, a reasonable choice of power switch, filter capacitor, inductor and freewheeling diode design parameters, the use of pulse width modulation circuit control technology, and through the control switch the on-time, maintaining stable output voltage. The simulation results show that： the conversion efficiency of circuit output voltage at full load is greater than 70%, with high security and reliability.

关 键 词：稳压电源 TL494 DC—DC 仿真 

分 类 号：TP303.3[自动化与计算机技术—计算机系统结构]