Linear LT8490高效MPPT太阳能电池200W充电解决方案

Linear公司的LT8490是降压-升压开关稳压电池充电器,实现恒流恒压(CCCV)充电模式,适用于大多数电池,包括密闭铅酸电池(SLA), 溢流电池, 胶体电池和锂电池.片上逻辑在太阳能应用时提供自动最大功率点跟踪(MPPT),并具有自动温度补偿功能.主要用在太阳能电池充电器,多种类型铅酸电池充电,锂电池充电器以及电池供电的工业或手持军用设备.本文介绍了LT8490主要特性,框图,几种应用电路以及高达200W太阳能电池充电演示板DC2069A主要指标和特性,电路图,材料清单和PCB元件布局图.

The LTR8490 is a buck-boost switching regulator battery charger that implements a constant-current constantvoltage (CCCV) charging profile used for most battery types, including sealed lead-acid (SLA), flooded, gel and lithium-ion. The device operates from input voltages above, below or equal to the output voltage and can be powered by a solar panel or a DC power supply. On-chip logic provides automatic maximum power point tracking (MPPT) for solar powered applications. The LT8490 can perform automatic temperature compensation by sensing an external thermistor thermally coupled to the battery.

STATUS and FAULT pins containing charger information can be used to drive LED indicator lamps. The device is available in a low profile (0.75mm) 7mm × 11mm 64-lead QFN package.

LT8490主要特性:

 VIN Range: 6V to 80V
 VBAT Range: 1.3V to 80V..

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