SPV1040太阳能电池充电解决方案(1).docx

《SPV1040太阳能电池充电解决方案(1).docx》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、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.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.SPV1040主要特性:■0.3Vto5.5Voperatinginputvoltage■140mΩinternalsynchronousrect

2、ifier■120mΩinternalpoweractiveswitch■100kHzfixedPWMfrequency■DutycyclecontrolledbyMPPTalgorithm■Outputvoltageregulation,overcurrentandovertemperatureprotection■Inputsourcereversepolarityprotection■Builtinsoft-start■Upto95%efficiency■3mmx4.4mmTSSOP8packageSPV1040应用:■Sma

3、rtphonesandGPSsystems■Wirelessheadsets■Smallappliances,sensors■Portablemediaplayers■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:solarbatterychargerusingthe

4、SPV1040TheSPV1040isahighefficiency,lowpowerandlowvoltageDC-DCconverterthatprovidesasingleoutputvoltageupto5.2V.Startupisguaranteedat0.3Vandthedeviceoperatesdownto0.45VwhencomingoutfromMPPTmode.Itisa100kHzfixedfrequencyPWMstep-up(orboost)converterabletomaximizetheenergy

5、generatedbyfewsolarcells(polycrystallineoramorphous).ThedutycycleiscontrolledbyanembeddedunitrunninganMPPTalgorithmwiththegoalofmaximizingthepowergeneratedfromthepanelbycontinuouslytrackingitsoutputvoltageandcurrent.TheSPV1040guaranteesthesafetyofoverallapplicationando

6、fconverteritselfbystoppingthePWMswitchinginthecaseofanovercurrentorovertemperaturecondition.TheICintegratesa120mΩN-channelMOSFETpowerswitchanda140mΩP-channelMOSFETsynchronousrectifier.图5.采用SPV1040的典型应用电路图6.太阳能电池充电器STEVAL-ISV006V2外形图图7.STEVAL-ISV006V2电路图太阳能电池充电器STEVAL-I

7、SV006V2材料清单:图8.STEVAL-ISV006V2PCB布局图