EPR-16 Datasheet, PDF (16/36 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP-16 2.75 W Charger/Adapter Using LNK501

EPR-16 - LinkSwitch 2.75 W Charger/Adapter
17-May-04
7.5 Transformer Construction
Secondary Winding
Basic Insulation
Secondary Winding
Basic Insulation
Cancellation
Winding
Basic Insulation
Primary Winding
2 2/3 Layer
Outer Insulation
Core Assembly
Flux / Belly band
Basic Insulation
Crop Unused Pins
Start at Pin 4 temporarily. Wind 15 turns of item [5] from right to left with
tight tension. Wind uniformly, in a single layer across entire width of
bobbin. Finish on Pin 6.
1 Layer of tape [6] for insulation.
Change the start pin connection of secondary winding from Pin 4 to Pin 5.
1 Layer of tape [6] for insulation.
Start at Pin 3. Wind 12 turns of bifilar item [4] from right to left with tight
tension. Wind uniformly, in a single layer, across entire width of bobbin.
Finish on Pin 4.
1 Layer of tape [6] for insulation.
Start at Pin 4. Wind 104 turns of item [3] from right to left in 2 and 2/3
layers across entire width of bobbin. Wind all layers with tight tension.
Finish on Pin 1.
10 Layer of tape [7] for insulation.
Assemble and secure core halves using item [8]
Place item [9] around outside of windings and core halves with tight
tension. Make electrical connection to band from pin 3 using item [4].
2 layers of tape [6] for insulation.
Remove pins 7 and 8
Note: The transformer is an integral part of the EMI performance of this design. Changes
to the transformer may have significant impact on both conducted and radiated EMI.
Power Integrations
Tel: [phone] Fax: [phone]
www.powerint.com
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