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基于TPS5430和MAX1674的智能充电器

消耗积分:10 | 格式:rar | 大小:575 | 2010-11-26

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 太阳能电池板的便携式充电器是解决通信设备、田间测量仪器等移动式电子产品供电问题的最佳解决方案之一。采用TPS5430降压电路和MAX1674升压电路，由LM393、ICL7660等元件构成的切换电路为控制核心，设计具有自启动功能的电能收集充电器。充电器能够根据充电电压的不同，自动切换到不同的DC-DC变换电路，实现高效、快速充电。测试表明，当充电电源内阻Rs为100 Ω，充电电压Es在10～20 V范围内，充电电池电动势Ec为3.6 V、内阻Rc为0.1 Ω时，充电电流Ic>58 mA，自动启动充电电压为3.6 V，电池放电电流为3 mA；而当充电电源内阻Rs为1 Ω，充电电压Es在1.2～3.6 V范围内时，最大充电电流可达256 mA。
 
Abstract:
 The solar panels for portable battery charger is one of the best solutions for the problem of power supply of the communication equipment， measuring instruments and other field mobile electronic products. A collection power charger with self-starting function is designed. This power charger uses TPS5430 buck circuit， MAX1674 step-up circuit and the switching circuit that is control core and is consist of LM393， ICL7660 and other elements. According to the different supply voltage， this charger automatically switched to different DC-DC conversion circuit to achieve efficient and fast charging. Through the TPS5430 buck circuit and the MAX1674 step-up circuit and the LM393 ICL7660 and other components constitute the core of the switching circuit to design a power collecting charger with self-starting function. In order to achieve efficient and fast charging the charger automatically switch to different DC-DC conversion circuit. Testing results showed that when the power resistance is 100Ω， and charging-voltage Es is from 10V to 20V， the battery Ec is 3.6V and Rc is 0.1Ω， and the charging-current Ic is greater than 58mA， automatic start charging-voltage is 3.6V and the battery discharge current is 3mA， when the power resistance is 1Ω and Es is from 1.2V to 3.6V， the maximum charging-current is up to 256mA.
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