摘 要:目前开关电源技术正向着小型化、高效率、节能等方向高速发展,在许多领域都得到了广泛应用。本文主要设计了一种小型多功能直流电源转换器,可输出+5V、+/-12V、+24V四路电压。该电源系统是由主电路模块和控制电路模块这两部分模块组成。在本设计中主要包括变压器的设计,整流滤波电路设计,控制回路及反馈回路设计等。在设计该开关电源的控制电路部分时主要采用了电流型控制芯片UC3842,系统变压器为单端反激式,采用Saber软件对系统原理图进行了仿真,性能良好,达到设计要求。40788 毕业论文关键词:变压器;UC3842集成控制器;多路输出
Design of minitype multifunctional DC power converters
Abstract: At present, the technology of switching power supply towards miniaturization, high efficiency, energy-saving direction of rapid development, has been widely used in many fields. This paper designed a small multifunctional DC power converters, which can output +5V, +/-12V, +24V four voltage. The power supply system is composed of main circuit module control circuit module and the two module. In this design mainly includes the design of transformer, rectifier and filter circuit design, control circuit and feedback circuit design etc.. In the control circuit design of the switching power supply mainly uses the current mode control chip UC3842, the system for transformer flyback, the schematic diagram of the system is simulated by using Saber software, good performance, meet the design requirements.
Keywords: transformer; UC3842 integrated controller; multi output
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