300W MPPT Solar Controller Mini Lt8490 Single Chip Intelligent Control Battery Pack Charging



LT8491stayLT8490Provide digital interface based on，Can passI2CInterface readLT8491Measured input voltage and current，Output voltage and current，power，Battery temperature，Conversion efficiency and other data。Realize real-time data measurement and control！


realMPPTTime is coming，LT8490Strong attack，LT8705Upgraded version of，Integrated intelligent control chip，Implementation of disturbance observation algorithmMPPTcontrol，Instead of fixed voltage method




Ultra lowQuiescent current：0.1mA，Almost no battery energy is consumed




The utilization rate of solar panels reaches the maximum110%，The effect in northern winter is amazing！！！




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This chip is only suitable for battery charging control，Not applicable asDC-DCPower use，If the chip detects no battery voltage, it will not work，No output。


Solve the problem that lithium battery protection cannot work！！！！！


This module is all customized，The output voltage and current are strictly customized according to the customer's use environment to achieve the best use effect。LT8490Smart chip solarMPPTComputing and battery charging management needs。temperature compensation，Setting of trickle current。


The input can be connected to solar energy and DC power supply，There are jumpers on the board。


The input current limit is set by correctly selecting the input current sampling resistance：Ii=50.5/Rcsi


Maximum output current（Constant current charging current）Determined by the correct Temple output current sampling resistance：Iomax = 49.7/Rcso


LT8490With battery management function，The charging control adopts four-stage charging management，Trickle charging，Constant current charging，Constant voltage charging and floating charging，Trickle current can be adjusted byRIMONOUTTo adjust。



stage0：Trickle charging，At the set maximum charging current20-30%Charge，Until the battery voltage is higher than the set charging voltage70%until。



stage1：Constant current charging，Charge at the set maximum charging current，Until the battery voltage is higher than the set charging voltage98%until。



stage2：Constant voltage，Charge at the set charging voltage，Until the charging current is belowC/10until。



stage3：Reduced constant voltage，Completion phase2After charging, the charging voltage is reduced to95%（95%Changeable），At this time, the battery voltage is greater than the actual charging voltage，Used to stop charging，Until the battery voltage is below95%Or the charging current is greater thanC/5until。



stage0-3Suitable for lead-acid battery charging，stage0-2Suitable for lithium battery charging。



Status indicator：3.5One short flash per second is a fault signal，3.5One slow flash per second is normal charging，Always on to complete charging or constant voltage charging。