文档介绍：程控DCDC升压电源
[摘要]DC/DC变换器是将一种直流电压变换为另一种所需的直流电压(固定或可调)。这种技术被广泛应用于计算机、办公自动化设备、工业仪器仪表、军事、航天等领域,涉及到国民经济的各行各业中,变换器还需要符合上述领域的安全标准。本设计是基于 Lm2577 集成芯片的升压电源,5V输入,6V到12V输出,把“低压电源”变为“高压电源”,具有“低进高出”的作用。在规定输出范围内,效率可以达到70%以上,具有较高的转换效率,进而满足人们日常生活中需要把低压直流电源转化为高压电源的需求。
[关键词]lm2577、升压电源、效率
中图分类号:TN86 文献标识码:A 文章编号:1009-914X(2017)14-0297-02
[Abstract]DC-DC converter is one DC voltage is transformed into another DC voltage required (fixed or adjustable).This technology is widely used puter,office automation equipment,industrial instrumentation,military,aerospace and other fields related to national economy sectors
,the converter also need to meet safety standards in these design is based on Lm2577 booster power integrated chips, 5 v input, 6 v to 12 v output, the "low power" into "high power", have the effect that "low into higher". Within the scope prescribed output, the efficiency can reach above 85%, with high conversion efficiency, and satisfy people in daily life need to convert low voltage dc power supply into the demand of high voltage power supply.
[Key words]lm2577, booster power supply, efficiency
当今时代,电作为一种不可或缺的能源,无处不在。生活中大多数稳压电源都是由高压稳成低压,但有些时候需要把低压转为高压。例如:一些都市白领在开车的时候笔记本没?了,这时如果可以把汽车电瓶电源经过升压得到笔记本所需的电源电压,进而为笔记本充电,这样就可以在开车的时候充电,必然会为快节奏的都市白领节省不少宝贵的时间。
方案设计
采用MC9S12XS128单片机作控制电路作控制电路,驱动LCD显示输出电压,同时改变数字电位器的输出电阻,以调整输出电压。LM2577T-ADJ升压芯