led照明驱动开关电源设计.doc

LED照明驱动开关电源设计
5400字    14页

摘要
LED照明驱动设计了恒流输出、空载保护、隔离输出及EMC等功能。系应用于LED照明驱动的开关电源电路。采用PWM自动调节实现恒流输出，稳压管过压锁定实现空载保护，电磁隔离和光隔离实现隔离输出。经过多次的运行与检测，实践证明该电路恒流输出稳定，发热量低。本设计体积小,微调反馈电路可设置作为为LED驱动常用的350mA或700mA恒流输出。可广泛适用于生活照明，商用照明。

关键词：LED驱动电源；发热低；恒流；隔离；低成本
 
 Driving switch power LED lighting design
LED lighting design drive the constant-current output, the output and protection, isolation no-load EMC etc. Function. Is applied to the switch power LED lighting driving circuit. Using PWM automatic adjustment output voltage, the constant-current over-voltage protection tube, electromagnetic no-load realize locking and isolation realize isolation output isolation. After many operation and test, the practice has proved that the constant-current circuits, low heat stable output. This design, small size, fine-tuning feedback circuit can be set as the common 350mA LED drive or 700mA constant-current output. Life can be widely used in commercial lighting, lighting.
Key words：Leds driving power；Fever is low； Constant flow；Isolation； Low cost
 
目 录
1概述 1
1.1选题的目的与意义 1
1.2研究现状 1
1.3系统性能指标 1
1.4系统组成及设计思路 2
1.5总体功能描述 3
2硬件电路的设计 4
2.1电路设计 4
2.2磁路设计 8
参考文献 10
致谢 10
附录 10