EPR-00015 Datasheet, PDF (8/24 Pages) Power Integrations, Inc. – 3W, Universal Input, Single Output, Isolated Converter with TNY254 (EP-15)

Engineering Prototype Report
7.0 Transformer – T1
7.1 Transformer drawing
1
WDG#2
223T
#36 AWG
2
3
10
WDG #3
49T
28AWG Triple Insulated
9
WDG#1
53T
#36 AWG
Electrical Specifications:
1
Electrical Strength
Creepage
Primary Inductance
Resonant Frequency
Primary Leakage Inductance
60Hz 1 minute, from Pins 1-4 to Pins 5-10
Between Pins 1-4 and Pins 5-10
Pins 1,2, all other windings open, measured at 44KHz
Pins 1,2, all other windings open
Pins 1,2, with Pins 5-10 shorted, measured at 44KHz
3000 VAC
6 mm (Min.)
3676 mH, ±10%
500 KHz (Min.)
300 mH (Max.)
Pins Side ₉
10
Secondary
1
2
3
1
Primary
Shield
Transformer Construction:
Shield
Start at Pin 1. Wind 53 turns of item [3] in 1 layer. Finish on Pin 3.
Primary
Start at Pin 2. Wind 223 turns of item [3] in 4 layers. Finish on Pin 1.
Secondary Winding
Start at Pin 10. Wind 49 turns of item [4]. Finish on Pin 9.
Final Assembly
Cores, Item [1], glued with a mixture of glass beads, item [5], 5% by weight, and
JAC133 epoxy, item [6]. (Contact Power Integrations for further details on
epoxy-glass bead construction method)
Materials:
Item
[1]
[2]
[3]
[4]
[5]
[6]
Description
Core: EE16, Nippon Ceramic NC-2H material or equiv. Gapped for ALG of 74 nH/T²
Bobbin: 10 pin EE16, Ying Chin YC1607 or equiv.
Magnet Wire: #36 AWG Heavy Nyleze
Magnet Wire: #28 AWG Triple insulated
Glass beads, DIA=0.249mm available from MO-SCI Corp.
Telephone: [phone]. Fax: [phone]
Epoxy, JAC133 (or equivalent) available from Jungdo Chemical Company, Ltd. South
Korea Telephone: [phone] Fax: [phone]
EPR-00015
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