EPR-9 Datasheet, PDF (11/32 Pages) Power Integrations, Inc. – Engineering Prototype Report 5 W, Universal Input, Dual Output, Isolated, TNY266 (EP9)

03-April-2001
5 W Universal Input Dual Output Isolated TNY266
7.4 Transformer Materials
Item
[1]
[2]
[3]
[4]
[5]
[6]
Description
Core: PC40 EE16, (YING CHIN YC1607) gapped for Alg=168 nH/T²
Bobbin: BE-16 (NICERA FEE16)
Magnet Wire: # 34 AWG Heavy Nyleze
Triple Insulated Wire: # 28 AWG
Tape: 3M #10 Reinforced Epoxy Film (Cream) 1.5 mm wide by 5 mils thick
Tape: 3M 1298 Polyester Film (white) 8.2 mm wide by 2.2 mils thick
7.5 Transformer Winding Instructions
Primary Margins
Primary Layer
Basic Insulation
+5 V and +12 V
Interleaved Winding
Basic Insulation
Final Assembly
Tape Margins with item [5] on one side at pins. Match height with Primary
windings
Start at Pin 4. Wind 26 turns of item [3] from left to right. Wind 25 turns of
item [3] from right to left. Then wind the remaining 25 turns in the next layer
from left to right. Finish on Pin 1.
1 Layer of tape [6] for basic insulation.
Start +5 V winding at Pin 8 (2 wires) of item [4] and +12 V winding at Pin 10
(1 wire) of item [4]. Wind together (3 wires) 7 turns of item [4] from right to
left. Wind uniformly, in a single layer, across entire width of bobbin. Finish
5 V winding on Pin 5. Continue +12 V winding with 10 more turns, from left
to right and finish at pin 9.
3 Layer of tape [6] for basic insulation.
Assemble and secure core halves. Impregnate uniformly [7].
Page 11 of 32
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