程控升压式开关电源设计

Programmable Boost Switching Power Supply Design

针对串联型稳压电源输出电压范围窄、输出电流小、工作效率较低等问题,提出了基于单片机控制的升压式开关电源。文章详细地介绍了系统组成、电路设计、程序设计、并制作了实物。测量结果表明:该电源在输入电压为15V^21V时,输出电压在24V^36V范围内可调,输出电流达3.5A,误差≦±0.1V,效率达95%以上。

Aiming tandem power supply output voltage range is narrow, and the output current is small, leading to the low efficiency and other issues.To solve these problems,we designed the step-up switching power supply ,which is based on microcontroller. The paper detailed introduces the system composition, circuit design, program design, and produces a kind. Measurable results show that： the power supply input voltage is 15V - 21V, and output voltage is within the range of 24V - 36V ,output current of up to 3.5A, error ± 0.1V, efficiency of up to 95% or more.