摘要
为了能够利用太阳能板输出的小于3 V的超低电压,研究和分析了基于SEPIC电路的TI的一款DC-DC变换器——LM2621,并以其为核心设计并制作了一款体积小、功耗低、频率高、输入范围宽的DC-DC升降压型变换器,LM2621输入电压范围低至1.2 V,工作频率高达2 MHz,峰值电流可达2 A,特别适合于物联网终端节点太阳能供电系统对低电压能量的利用需求,能够很好地将不稳定的微弱太阳能电压转换为稳定电压供负载节点使用。
In order for ultra low voltage to use less than 3V of the solar panel output, this paper studies and analyzes a DC- DC converter of TI based on the SEPIC a circuit-LM2621, taking it as the core of the design and production of the DC-DC lifting a small volume, low power consumption, high frequency, wide input range voltage converter, LM2621 input voltage range as low as 1.2V, the operating frequency up to 2Mhz, peak current up to 2A, which is particularly suitable for Inter- net use demanding solar power supply system for low voltage power terminal node, and can very well be weak solar voltage instability into a stable voltage for the load node.
出处
《数字通信》
2014年第5期50-53,57,共5页
Digital Communications and Networks
基金
重庆市教委科学技术研究项目(KJ100520)
重庆市自然科学基金计划(CSTC
2010BB2419)
重庆邮电大学科研基金项目(A2009-23)
国家自然科学基金第60771042号中国自然科学基金项目
