基于STM32的LED驱动电源设计

黄河科技学院毕业设计说明书第I页基于STM32的LED驱动电源设计摘要高亮LED是当今照明技术的重大进步。LED驱动电源的控制核心采用ARM系列微处理器STM32，实现LED驱动的智能控制。ARM系列微处理器的应用越来越广泛，其采用当前最先进的设计理念，使得性能大大提升。能使我们在微控制器、集成开发软件、编程语言等知识的学习和掌握水平，使我们在微控制器设计、软件编程等方面的应用能力得到全面训练和提高。对于一般照明而言，人们更需要白色的的光源。作为一种新型的光源，LED具有无污染、长寿命、耐振动和抗冲击的鲜明特点。虽然白光LED的发光效率正在逐步提高，但是与LED灯配套的驱动器性能不佳，故障率高成了LED推广应用的瓶颈。因此众多厂家选用恒流方式驱动LED，从而设计的开关电源就需要一个能恒流的直流驱动电源。传统的开关电源控制集成电路具有效率高、输出稳定、可靠性高，并可实现远程控制等功能。完全适合用来驱动LED的开关电源。本文主要通过设计一个恒流驱动电源来驱动LED。通过各种电力电子组件和电力电子电路组成一个恒流的电源，达到设计的要求。关键词：LED，电源，驱动，STM32黄河科技学院毕业设计说明书第II页STM32-basedsoftwaredesignoftheLEDdrivepowerAuthor:DaiYuanweiTutor:ZhangYuxiangAbstractBrightLEDlightingtechnologyistodayamajoradvancement.LEDdrivepowercontrolcorewithARMfamilyofmicroprocessorSTM32,realizationofLED-drivenintelligentcontrol.ARMfamilyofmicroprocessorusedmorewidely,whichusesthemostadvanceddesignconcepts,makingtheperformancegreatlyenhanced.Allowustomicro-controllers,integrateddevelopmentsoftware,programminglanguages,suchasknowledge,learningandmasterylevel,sothatweinmicro-controllerdesign,softwareprogrammingandotheraspectsofcompetencyhavebeenfullytrainedandimproved.Forgenerallightingpurposes,peopleneedwhitelight.Asanewtypeoflightsource,LEDhasnopollution,longlife,resistancetovibrationandshockofthedistinctcharacteristics.AlthoughtheluminousefficiencywhiteLEDisgraduallyimproving,butwithLEDlightsmatchingdrivepoorperformance,promotetheuseofLEDfailureratehasbecomethebottleneck.SomanymanufacturersuseconstantcurrentmodetodriveLED,andthusthedesignofswitchingpowersupplywillneedaconstantcurrentoftheDCdrivepower.TheconventionalswitchingpowersupplycontrolICwithhighefficiency,outputstability,highreliability,andofferfeaturessuchasremotecontrol.EntirelysuitablefordrivingLED'sswitchingpowersupply.Inthispaper,throughthedesignofaconstantcurrentdrivepowertodrivetheLED.Throughavarietyofpowerelectroniccomponentsandpowerelectroniccircuitstoformaconstantcurrentpowersupply,tomeetthedesignrequirements.Keywords:LED,Power,Drive,STM32黄河科技学院毕业设计说明书第III页目录1绪论......................................................................................................................................51.1课题背景介绍.............................................................................错误!未定义书签。1.2课题研究方案.............................................................................错误!未定义书签。1.3课题研究方法..............................................................................................................21.4整体电路框图.............................................................................错误!未定义书签。2系统所用主要芯片介绍......................................................................错误!未定义书签。2.1STM32处理器功能介绍...........................................................错误!未定义书签。2.2模拟/数字转换(ADC)..............................................................................................132.2.1介绍..............................................................................................................132.2.2主要特征.............................................................................................132.2.3引脚描述.......................................................................................................142.2.4功能描述.......................................................................................................153系统硬件电路设计............................................................................................................173.1LED驱动电路的分析过程....................................................................................173.2功率及驱动电路设计.............................................................................................183.2.1IR2110简介..................................................................................................183.2.2IR2110内部结构和特点..............................................................................193.3反馈和保护电路设计..............................................................................................203.3.1综述...............................................................................................................203.3.2软启动电路设计...........................................................................................213.3.3电源电路设计...............................................................................................213.3.4开关电源保护电路设计...............................................................................224PWM控制电路...................................................................................................................27黄河科技学院毕业设计说明书第IV页4.4.1组件选择和基本原理应用.........................................................................................27结论..........................................................................................................................................31致谢..........................................................................................................................................32参考文献..................................................................................................................................30黄河科技学院毕业设计