5 W Universal Input Dual Output Isolated TNY266

03-April-2001

Table Of Contents

1

Introduction .................................................................................................................3

2

Power Supply Requirements Specification ..............

...................................................3

3

Schematic ...................................................................................................................4

3.1

Configuration “1” 2 kV..........................................................................................4

3.2

Configuration “2” 6 kV..........................................................................................5

4

Circuit Description.......................................................................................................6

5

Layout and Picture......................................................................................................7

6

Bill Of Materials...........................................................................................................9

6.1

Configuration ”1”, 2 kV.........................................................................................9

6.2

Configuration ”2”, 6 kV.........................................................................................9

7

Transformer – T1 ......................................................................................................10

7.1

Transformer Drawing .........................................................................................10

7.2

Electrical Specifications .....................................................................................10

7.3

Transformer Construction ..................................................................................10

7.4

Transformer Materials........................................................................................11

7.5

Transformer Winding Instructions......................................................................11

7.6

Transformer Bobbin Dimensions .......................................................................12

7.7

Transformer Spreadsheet..................................................................................13

8

Performance Data.....................................................................................................15

8.1

Efficiency ...........................................................................................................15

8.2

Regulation @ 25

°C Ambient.............................................................................16

8.3

Temperature ......................................................................................................17

8.4

Waveforms (2 kV config.”1”) ..............................................................................18

8.4.1

Turn-on Delay/Hold-up Time ......................................................................18

8.4.2

Auto-Restart ...............................................................................................19

8.5

Transient Response...........................................................................................21

8.6

Conducted EMI Scans .......................................................................................22

8.7

Surge Voltage Immunity (2 kV and 6 kV, 1.2/50

µs per IEC1000-4-5)...............23

8.8

Acoustic Emissions............................................................................................24

Appendix A Example of 24 V Output Design....................................................................25

Appendix A1.1 Schematic of 24 V Design....................................................................25

Appendix A1.2 Bill of Materials (5 W, 5 VDC, 24 VDC PS)..............................................26

Appendix A1.3 Transformer Spreadsheet ....................................................................27

9

Revision History........................................................................................................29

Important Note:

Although the EP-9 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.

Page 2 of 32

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