EPR - 21 - 5 V ， 30瓦的DC -DC转换器
19-Nov-02
目录
介绍.................................................................................................................3
电源规格............................................... ......................................... 4
概要...................................................................................................................5
电路Description.......................................................................................................6
4.1小Circuitry......................................................................................................6
4.2输出整流............................................... .................................................. 6
4.3输出Feedback.....................................................................................................7
4.4施工............................................................................................................7
5 PCB Layout.................................................................................................................8
6比尔Materials...........................................................................................................9
变压器规格................................................ ................................................ 10
7.1电气Specifications.........................................................................................10
7.2 Materials................................................................................................................10
7.3变压器建设图.............................................. ..................................... 11
7.4变压器结构............................................... ....................................... 11
8电感Specification................................................................................................12
8.1电气Specifications.........................................................................................12
8.2 Materials................................................................................................................12
8.3电感构建图.............................................. ............................................ 13
8.4电感建设............................................... ............................................. 13
9 PIXls变压器设计表格.............................................. .......................................... 14
10性能Data.....................................................................................................17
10.1的效率...........................................................................................................17
10.2监管.........................................................................................................18
10.2.1负载调节............................................. ................................................ 18
10.2.2线路调整............................................. ................................................. 18
11热性能............................................... ................................................ 19
12 Waveforms................................................................................................................21
12.1漏极电压和电流，正常工作.......................................... ......... 21
12.2输出电压启动配置文件........................................... ............................... 22
12.3负载瞬态响应（ 75 ％到100 ％负载阶跃） ..................................... ... 23
12.4输出纹波的测量.............................................. .............................. 24
12.4.1纹波测量技术............................................ ........................ 24
12.4.2测量结果............................................. ....................................... 25
13控制回路测量.............................................. ....................................... 26
13.1最大负载36 VDC ............................................. ........................................ 26
13.2最大负载48 VDC ............................................. ........................................ 26
13.3最大负载72 VDC ............................................. ........................................ 27
14修订历史记录........................................................................................................28
重要注意事项：
虽然EP- 21被设计成满足电信安全隔离要求，这
工程样机还未机构批准。
Power Integrations公司
联系电话： +1 408 414 9660传真： +1 408 414 9760
www.powerint.com
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