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人们日常生活的平稳运行离不开各式各样的电源,对电压的要求也颇为多样。现在市场上销售的电源产品各式各样,传统的开关电源使用专门的脉宽调制芯片,结构十分复杂,转换效率低下、功耗大、输出精度低、可供调节的范围有限、操作难度大、易磨损易老化。为了解决这些问题,简化电源结构,实现对电源的智能化控制,设计者们利用单片机和键盘的作用,使用温度的传感器对输出电压进行校正,促使了电源在应用过程中的创新。故而本文主要围绕开关电源在设计中产生的一些问题以及关于接地问题的分析进行展开与讨论。
The smooth operation of daily life is inseparable from a wide range of power supply, the voltage requirements are quite diverse. Currently on the market for a wide range of power products, the traditional switching power supply using a special pulse width modulation chip, the structure is very complex, low conversion efficiency, power consumption, low output accuracy, adjustable for a limited range of difficult operation , Easy to wear and easy to aging. In order to solve these problems, simplify the structure of the power supply, and realize the intelligent control of the power supply, designers use the function of the single chip microcomputer and the keyboard to calibrate the output voltage by using the temperature sensor, prompting the innovation of the power supply in the application process. Therefore, this paper focuses on some issues arising in the design of switching power supply and the analysis of grounding problems to start and discuss.