基于UC3842的反激式开关电源设计与仿真
Design and Simulation of Flyback Switching Power Supply Based on UC3842
摘要: 本文介绍了一款反激式开关电源，采用电流型PWM芯片UC3842进行控制。首先，简要介绍了开关电源的工作原理和反激变换器的工作原理；然后，详细讨论了设计过程，包括在整流滤波电路、变压器设计、电压反馈电路设计、PWM控制电路设计等；最后，利用Multisim软件进行电路仿真模型的搭建，可以实现24 V稳定电压的输出，输出电压约3 ms保持稳定。验证了设计的正确性，为今后类似电源设计和优化提供了参考。
Abstract:
This article describes a flyback switching power supply that is controlled by a current-type PWM chip UC3842. Firstly, the working principles of switch power supply and flyback converter are briefly introduced. Then, the design process is discussed in detail, including rectification and filter-ing circuit, transformer design, voltage feedback circuit design, and PWM control circuit design. Fi-nally, using Multisim software, a circuit simulation model is built, which can achieve a stable output of 24 V voltage, and the output voltage can be kept stable for about 3 ms. The correctness of the de-sign is verified, which provides a reference for similar power supply design and optimization in the future.
参考文献
|
[1]
|
王强, 王槐生, 田宏伟. 一种反激式开关电源的设计与仿真[J]. 计算机仿真, 2021, 38(4): 83-88+138.
|
|
[2]
|
曹子轩, 郎宝华, 杨泽睿. 多输出反激式开关电源的研究与设计[J]. 电子测量技术, 2020, 43(4): 11-15.
|
|
[3]
|
朱彩莲, 熊丽萍, 魏海红. 基于UC3842反激式AC-DC开关电源设计[J]. 电子设计工程, 2017, 25(24): 148-151+156.
|
|
[4]
|
冯延强, 杨建涛, 乔宝强, 等. 基于UC3845反激式开关电源设计及其在测井仪的应用[J]. 铀矿地质, 2019, 35(3): 165-169.
|
|
[5]
|
王志峰, 廖晓文, 王韶军, 等. 基于UC3842应用电路设计[J]. 电子设计工程, 2014, 22(19): 126-129.
|
|
[6]
|
张波, 汪义旺, 凌湘斌. 基于UC3844的反激式开关电源设计[J]. 通信电源技术, 2014, 31(3): 27-29.
|
|
[7]
|
赵志敏. 基于UC3842芯片的单端反激式开关电源设计[J]. 科技与创新, 2014(6): 36+38.
|
|
[8]
|
路子翔, 李开宇, 李磊, 等. 基于UC3843的输出可调开关电源设计[J]. 自动化与仪表, 2019, 34(6): 105-108.
|
|
[9]
|
张厚升, 赵艳雷. 新型多功能反激式开关电源设计[J]. 电力自动化设备, 2011, 31(1): 113-117.
|