资源描述：
《stspv1040太阳能电池充电解决方案设计》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、STSPV1040太阳能电池充电解决方案关键词：电源管理,太阳能电池充电,电池充电器,ST公司的SPV1040是嵌入了MPPT的高效太阳能电池充电器,输入电压0.3V到5.5V,内部集成140mΩ同步整流器,120mΩ功率开关,100kHz固定PWM频率,占空比有MPPT算法来控制,输出电压具有稳压,过流和超温保护,主要用在智能手机和GPS系统,无线手机,小型电器和传感器,手持媒体播放器(PMP),数码相机,玩具和手持保健设备.本文介绍了SPV1040主要特性,方框图,典型应用电路,输出并联和串联连接图,以及太阳能电池充电器STEVAL-ISV006V2电路图和材料清单与PCB布局图.
2、HighefficiencysolarbatterychargerwithembeddedMPPTTheSPV1040isahighefficiency,lowpowerandlowvoltagemonolithicstep-upconverterthatoperatesovera0.3Vto5.5Vinputvoltagerangewhichallowsprovidingpowersupplytoproductsusingevendowntoonephotovoltaiccellorfuelcellswherethecapabilityofhandlinglowinputvoltag
3、esisofutmostimportance.Despitethevariationofseveralconditionsovertheday(likeirradiation,dirt,temperature,etc.)theSPV1040allowstoachievethemaximumefficiencyintermsofpowerharvestedfromthecellsandtransferredtotheoutputthankstotheembeddedMPPTalgorithm.Itemploysaninputvoltageregulationloop,whichfixes
4、thechargingbatteryvoltage,setwitharesistordividerandamaximumoutputcurrentsetwithacurrentsenseresistoraccordingtochargingcurrentconstraints.TheSPV1040guaranteessafetyofapplicationdevicesandoftheconverteritselfstoppingthePWMswitchingincaseeitherofreachedmaximuminputcurrentpeakthresholdsetupto1.8Ao
5、rmaximumtemperaturelimitsetupto155℃.AsadditionalfeaturetheICbuild-inaninputsourcereversepolarityprotectionwhichpreventsdamagingincaseofreverseconnectionofsolarpanelattheinput.SPV1040主要特性:■0.3Vto5.5Voperatinginputvoltage■140mΩinternalsynchronousrectifier■120mΩinternalpoweractiveswitch■100kHzfixed
6、PWMfrequency■DutycyclecontrolledbyMPPTalgorithm■Outputvoltageregulation,overcurrentandovertemperatureprotection■Inputsourcereversepolarityprotection■Builtinsoft-start■Upto95%efficiency■3mmx4.4mmTSSOP8packageSPV1040应用:■SmartphonesandGPSsystems■Wirelessheadsets■Smallappliances,sensors■Portablemedi
7、aplayers■Digitalstillcameras■Toysandportablehealthcare图1.SPV1040方框图图2.SPV1040简化应用电路图图3.SPV1040输出并联连接图图4.SPV1040输出串联连接图采用SPV1040的太阳能电池充电器STEVAL-ISV006V2STEVAL-ISV006V2:solarbatterychargerusingtheSPV1040TheSPV1040isahigheffici
