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DER-46 参数 Datasheet PDF下载

DER-46图片预览
型号: DER-46
PDF下载: 下载PDF文件 查看货源
内容描述: 4.5W ( 6Wpk )多路输出DVB -T电源采用TNY264P [4.5W (6Wpk) Multiple Output DVB-T Power Supply using TNY264P]
分类和应用:
文件页数/大小: 22 页 / 1366 K
品牌: POWERINT [ Power Integrations ]
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DER-46  
6 W peak, Multiple output PSU for DVB-T  
April 20, 2005  
Table Of Contents  
1
2
3
4
Introduction................................................................................................................ 3  
Power Supply Specification........................................................................................ 4  
Schematic.................................................................................................................. 5  
Circuit Description...................................................................................................... 6  
4.1  
4.2  
4.3  
TinySwitch Primary............................................................................................. 6  
Output Rectification ............................................................................................ 6  
Output Feedback and control.............................................................................. 6  
5
6
7
PCB Layout................................................................................................................ 7  
Bill Of Materials.......................................................................................................... 8  
Transformer Specification.......................................................................................... 9  
7.1  
Electrical Diagram............................................................................................... 9  
Electrical Specifications ...................................................................................... 9  
Materials ........................................................................................................... 10  
Transformer Build Diagram............................................................................... 10  
Winding Instructions.......................................................................................... 11  
7.2  
7.3  
7.4  
7.5  
8
9
Transformer Spreadsheet........................................................................................ 12  
Performance Data.................................................................................................... 13  
9.1  
9.2  
10  
11  
Efficiency .......................................................................................................... 13  
Worst Case Cross Regulation........................................................................... 14  
Thermal Performance........................................................................................... 15  
Waveforms ........................................................................................................... 15  
11.1 Drain Voltage and Current, Normal Operation.................................................. 15  
11.2 Output Ripple Measurements ........................................................................... 16  
11.2.1 Ripple Measurement Technique................................................................ 16  
11.2.2 Measurement Results................................................................................ 17  
11.3 Transient Response: 3.3V – 50% - 100% Load Step........................................ 19  
12  
13  
Conducted EMI..................................................................................................... 20  
Revision History ................................................................................................... 21  
Important Note:  
Although this board is designed to satisfy safety isolation requirements, the engineering  
prototype has not been agency approved. Therefore, all testing should be performed using an  
isolation transformer to provide the AC input to the prototype board.  
Design Reports contain a power supply design specification, schematic, bill of materials, and  
transformer documentation. Performance data and typical operation characteristics are  
included. Typically only a single prototype has been built.  
Power Integrations  
Tel: +1 408 414 9200 Fax: +1 408 414 9201  
Page 2 of 22  
www.powerint.com