基于LT3782的大电流升压电路设计  

Design of Step-up High Power Circuit Based on LT3782

作　　者：汪剑[1] 杨健[2] 

机构地区：[1]无锡科技职业学院,江苏无锡214028 [2]北京航天飞行控制中心,北京100094

出　　处：《现代电子技术》2009年第12期13-14,21,共3页Modern Electronics Technique

摘　　要：由于移动通信等技术的迅猛发展,对车载设备的电源提出了更高的要求。目前,将汽车电瓶的12 V电压逆变到220 V交流电压,再由220 V交流电压产生所需电压的做法虽然能够满足工作需要,但效率很低,大约只有60%;针对这一现象,该文提出基于两相步进升压型DC/DC控制器LT3782设计一款大电流输出的升压型DC/DC模块。该模块在12 V汽车电瓶供电下,根据需要可以提供高达7 A电流的24 V,18.5 V等多种输出。由于采用两相DC/DC新技术,电源效率达到90%以上,比电源经过转换到交流220 V后再转换成所需电压的方法,效率明显提高,实用性更强。With the rapidly development of mobile communication technique,the need for high- powered power supply has been put forward. Nowadays, most power supply using in wireless communication vehicle is designed by means of quadratic transformation,DC 12 V of rechargeable vehicle batteries is firstly inverted to AC 220 V voltage and then AC 220 V voltage is transformed to the voltage needed,the efficiency is about 60%. A step -up high power converter based on LT3782 is designed, its efficiency can reach 90%. In comparison with the conventional method, this one has higher efficiency and better practical applicability. Keywords：

关 键 词：开关电源 BOOST拓扑结构 电源效率 车载电源 

分 类 号：TP211.5[自动化与计算机技术—检测技术与自动化装置]