基于LM5117降压型开关电源的设计
发布时间：2019-01-29 00:01
【摘要】：本系统以LM5117芯片和CSD18532KCS MOS管为核心器件,采用Buck降压电路,通过LM5117芯片的PWM波来控制CSD18532KCS MOS管,调整PWM波的占空比,得到稳压输出。通过测试,在输入直流电压16V的情况下,额定输出直流电压为5V,输出电流最大值为3A;输出纹波小于25m V,负载调整率小于2.5%,电压调整率小于0.22%,效率可以达到85.2%.
[Abstract]:In this system, LM5117 chip and CSD18532KCS MOS transistor are used as the core devices, Buck step-down circuit is adopted, CSD18532KCS MOS tube is controlled by PWM wave of LM5117 chip, the duty cycle of PWM wave is adjusted, and the steady voltage output is obtained. Under the condition of 16V input DC voltage, the rated output DC voltage is 5V and the maximum output current is 3A; The output ripple is less than 25 MV, the load adjustment rate is less than 2.5, the voltage adjustment rate is less than 0.22, and the efficiency can reach 85.22.
【作者单位】： 武汉晴川学院;
【分类号】：TN86
，
本文编号：2417441
[Abstract]:In this system, LM5117 chip and CSD18532KCS MOS transistor are used as the core devices, Buck step-down circuit is adopted, CSD18532KCS MOS tube is controlled by PWM wave of LM5117 chip, the duty cycle of PWM wave is adjusted, and the steady voltage output is obtained. Under the condition of 16V input DC voltage, the rated output DC voltage is 5V and the maximum output current is 3A; The output ripple is less than 25 MV, the load adjustment rate is less than 2.5, the voltage adjustment rate is less than 0.22, and the efficiency can reach 85.22.
【作者单位】： 武汉晴川学院;
【分类号】：TN86
，
本文编号：2417441
本文链接：https://www.wllwen.com/kejilunwen/xinxigongchenglunwen/2417441.html
