摘要
针对OLED测试的驱动电源功能单一的问题,介绍一种基于STM32的多功能OLED驱动电源系统。系统以STM32为核心,通过手动调节或者上位机软件方式设置参数后,控制DA芯片采取电流负反馈的方式控制XL4015的输出电压或者电流值,实现对4通道的OLED的恒压,恒流,占空比及频率可调,电压-电流混合源四种驱动方式,同时可以根据OLED样品测试要求选择不同的输出通道。实验测试结果研究表明,系统不仅误差小,分辨率高,稳定性好,纹波系数小,而且操作简单,可以实现多路OLED的实时数据显示和控制,具有良好的工程实用价值。
This paper introduces a kind of multi function OLED drive power supply system based on STM32 and TLC5617. System uses STM32 as the core, through the Da chip TL5617 control XL4015 the output voltage of the value, so as to realize the OLED driving constant voltage drive, constant current drive, duty ratio and frequency can be adjustable voltage-current mixed source four way, through the software and manually adjust the output value. Experimental results show that the system not only has small error, high resolution, good stability, small ripple coefficient and realize multi-channel OLED real-time data display and control, and has a good practical value in engineering.
作者
王菲
赵彦
Wang Fei;Zhao Yan(Xi’an Traffic Engineering Institute,Xi,an Shaanxi,710300)
出处
《电子测试》
2019年第10期22-24,共3页
Electronic Test
基金
西安交通工程学院中青年基金项目(KY18-26)
