原标题：Cypress MB39C831超低电压高效太阳能热能收获解决方案

　　cypress公司的MB39C831是高效同步整流升压DC/DC转换器,能从太阳能或热能发生器(TEG)把能量转换成锂电池,起动电压从0.35V,静态电流32uA,输入电压0.3 V-4.75 V,输出电压3.0, 3.3, 3.6, 4.1, 4.5, 5.0V.主要用在太阳能收获,热能收获,手持音频播放器,手机,电子书,电子字典,无线遥控器和传感器节点.本文介绍了MB39C831主要特性,框图和应用电路,以及评估板MB39C831-EVB-02框图,主要指标,电路图,材料清单和PCB元件布局图.

　　The MB39C831 is the high-efficiency synchronous rectification boost DC/DC converter IC which efficiently supplies energy getting from the solar cell with the single cell or multiple cells, or from the thermoelectric generator (TEG) to the Li-ion battery. It is possible to start-up from 0.35 V and it contains the function to control the DC/DC converter output following the maximum power point of the solar cell (MPPT: Maximum Power Point Tracking) and the protection function to charge the Li-ion battery safely.

　　MB39C831主要特性:

　　Power Converter Type: Boost

　　Temperature Range: -40˚C-+85˚C

　　Quiescent Current: 32 µA

　　Input Voltage Range: 0.3 V-4.75 V

　　Output Voltage (V): 3.0, 3.3, 3.6, 4.1, 4.5, 5.0

　　Package: 40-pin QFN

　　MB39C831应用:

　　Solar energy harvesting

　　Thermal energy harvesting

　　Li-ion battery using the single cell or multiple cells’ solar cell/Super Capacitor Charger

　　Portable audio players

　　Cellular phone

　　eBook

　　Electronic dictionary

　　Wireless remote controllers

　　Sensor node

　　图1.MB39C831框图

　　图2.MB39C831恒压模式应用电路图(MPPT_ENA = L, ENA = H)

　　图3.MB39C831充电模式应用电路图(MPPT_ENA = H, ENA = H)

　　评估板MB39C831-EVB-02

　　The MB39C831-EVB-02 is the evaluation board for the energy harvesting IC, MB39C831. This evaluation board is capable of accepting solar or thermal electric power source.

　　图4.评估板MB39C831-EVB-02框图

　　评估板MB39C831-EVB-02指标:

　　图5.评估板MB39C831-EVB-02外形图

　　图6.评估板MB39C831-EVB-02恒定模式设定图

　　图7.评估板MB39C831-EVB-02充电模式设定图

　　评估板MB39C831-EVB-02材料清单: