| 基于UC3842开关稳压电源的设计 |
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| 引用本文： | 黎晓贞,涂敏. 基于UC3842开关稳压电源的设计[J]. 电子技术, 2009, 46(3): 11-13 |
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| 作者姓名： | 黎晓贞 涂敏 |
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| 作者单位： | 江西南昌大学电工电子实验中心 |
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| 摘 要： | 开关电源是一种效率很高的电源变换电路，通过对Boost型开关电源作详细的数学推导后得到准确数据。该系统包括整流滤波模块、DC-DC变换模块、过流保护及人机接口模块，以DC-DC变换器作系统的核心。采用UC3842作开关电源控制芯片，开关管采用耐高压，导通电阻很小的MOSFET管IRF640。输出滤波电路中用LC构成的型网络，同时输出采用单片机采样系统，可显示当前的电流和电压，且通过采样电流实现过流保护功能。
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| 关 键 词： | Boost型开关电源 DC-DC变换模块 整流滤波模块 过流保护模块 |
Design of Switching Regulated Power Supply Based on UC3842 |
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| Li Xiaozhen,Tu Min. Design of Switching Regulated Power Supply Based on UC3842[J]. Electronic Technology, 2009, 46(3): 11-13 |
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| Authors: | Li Xiaozhen Tu Min |
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| Affiliation: | Electrical and Electronical Experiment Center;Nanchang University |
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| Abstract: | Switching mode power is a high efficiency power,There is a detailed analysis to direct at Boost style of switching mode power.The DC-DC module is the core of the entire system.we choose the UC3842 and a barotolerance and low Ron MOSFET IRF640 as the switch.At the Output port, we use a filter making up of a Pi circuit of LC.Also,We use a MCU to sample the Voltage of the output,then the output current and output voltage could be displayed.Using the sampled current, current foldback function can be achieved. |
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| Keywords: | Boost style of switching mode power DC-DC module commuted filter module preventing overcurrent module |
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