linearltc压电能量收集电源方案

Lin earLTC3588-1 压电能量收集电源方案

关键字：电源管理，能量收集器，DC/DC转换器

Lin ear公司的LTC3588-1是压电能量收集电源,集成了低噪音全波整流和高效降压转换器，组成完整的能量收集解决方案，最适合高输出阻抗的能量源如压电传感器•输入电压2.7V-20V,输出电流高达100mA可选输出电压1.8V,2.5V,3.3V 和 3.6V,可用于压电能量收集，电-机械能量收集，无线HVAC专感器,轮胎压里传感器遥控光幵关，毫微瓦降压稳压器.本文介绍LTC3588-1主要特性，方框图以及多种应用电路图，包括100mA压电能量收集电源电路图，最小尺寸的1.8V低压输入压电能量收集电源电路图，电场能量和热电能量收集器电路图等•

LTC3588-1:PiezoelectricE nergyHarvesti ngPowerSupply

TheLTC.3588-1i ntegratesalow-lossfull- wavebridgerectifierwithahighefficie ncybuckc on vertertoformacompletee nergy harvesti ngsoluti ono ptimizedforhighoutputimpeda ncee nergysourcessuchaspiez oelectrictra nsducers.A nultralowquiesce ntcurre ntun dervoltagelockout(UVLO) modewithawidehysteresiswi ndowallowschargetoaccumulate onanin putcapacitoru n tilthebuckc on verterca nefficie ntlytra nsferaportio no fthestoredchargetothe output.I nregulatio n,theLTC3588-

1en tersasleepstate in whichboth in puta ndoutputquiesce ntcurre ntsare mini mal.T hebuckc on vertertur nsonan doffas neededtoma intain regulati on.

Fouroutputvoltages,1.8V,2.5V,3.3Va nd3.6V,arepi nselectablewithupto100m Aofcontinu ousoutputcurre nt;however,theoutputcapacitormaybesizedtoservice ahigheroutputcurre ntburst.A nin putprotectivesh un tsetat20Ve nablesgreatere n ergystorageforagive namoun tofi nputcapacita nee.

LTC3588-1主要特性:

—NoLoad) 950nAln putQuiesce ntCurre nt(Outputi nRegulatio n

450nAI nputQuiesce ntCurre nti nUVLO

2.7Vto20VI nputOperati ngRa nge

In tegratedLow-LossFull-WaveBridgeRectifier

UptolOOmAofOutputCurre nt SelectableOutputVoltagesof1.8V,2.5V,3.3V,3.6V

HighEfficie ncyl ntegratedHystereticBuckDC/DC

In putProtectiveShu nt —Upto25mAPull-Do wn atVIN> 20V WideI nputU ndervoltageLockout(UVLO)Ra nge

Availablei n10-LeadMSEa nd3mmx3mmDFNPackages

LTC3588-1 应用:

PiezoelectricE nergyHarvesti ng

Electro-Mecha nicalE nergyHarvesti ng

WirelessHVACSe nsors MobileAssetTracki ng

TirePressureSe nsors BatteryReplaceme ntforl ndustrialSe nsors RemoteLightSwitches

Stan dal on eNa nopowerBuckRegulator

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图4.最小尺寸的1.8V 低压输入压电能量收集电源电路图

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