22-Jan-01

EPR-00011 - 70 W Adapter

Page 3 of 46

Power Integrations Inc

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www: http://www.powerint.com

13 Appendix A - Thermal considerations: ...................................................................... 37

13.1

Efficiency: .......................................................................................................... 38

13.2

Heat Sinking: ..................................................................................................... 38

13.3

Heat Spreading and Enclosure Surface Temperature: ...................................... 39

13.4

Component Temperature: .................................................................................. 39

13.5

Conclusion: ........................................................................................................ 40

14 Appendix B - Custom Component Documentation:................................................... 41

14.1

Toroid Filter Inductor (L2): ................................................................................. 41

14.2

Output Inductor (L1)........................................................................................... 42

14.3

Heat sink #1 (TOPSwitch-GX and Input Bridge)................................................ 43

14.4

Heat sink #2 (Output Diodes) ............................................................................ 43

15 Revision History ........................................................................................................ 44