基于ATMEGA16的开关电源设计与制作

Switching power supply design and implement based on ATMEGA 16

电源广泛应用于各种电子设备及电子电路中。以ATMEGA16单片机为控制核心,设计并制作了具有输出电压步进可调的开关电源。其硬件由整流、滤波、单片机供电电源、DC-DC变换及LED显示组成。经实验测定,输出电压0～9.9V步进0.1V可调,输出电流1.5A,当输出电压9V、输出电流1.5 A时,电压调整率小于0.67%,效率可达78.78%。

Switching power supply has been applied in electric equipment and circuit widely.A sort of switching power supply,which can supply adjustable output voltage step by step,was designed and implemented in this paper by using a single chip microcomputer ATMEGA16 as the control corn.The power supply was made up of rectifier,filter,power supply of ATMEGA16,DC-DC circuit and LED display.Test results show that the output voltage can be adjusted with step 0.1 V in range of 0~9.9 V,while the output current can reach 1.5A.When the output voltage/current is 9V/1.5A,the voltage adjustment rate is less than 0.67% and efficiency achieves 78.78%.