EPR-89 Datasheet, PDF (11/32 Pages) Power Integrations, Inc. – Engineering Prototype Report for 2.0 W CV Adapter using LNK362P

08-Nov-2005
EP-89 6.2 V, 322 mA Adapter
7 Transformer Specification
7.1 Electrical Diagram
5
WD#1
Cancillatinon
37T #39X2
Floating
Floating
9
WD#3
Shield
10T #33X4
5
13 T #27 TIW ^WD#4
Secondary
8
4
WD#2
Primary
144T #39
3
Figure 4 – Transformer Electrical Diagram.
7.2 Electrical Specifications
Electrical Strength
Primary Inductance
Resonant Frequency
1 second, 60 Hz, from Pins 3,4,5 to Pins 8,9
Pins 3-4, all other windings open, measured at
100 kHz, 0.4 VRMS
Pins 3-4, all other windings open
Primary Leakage Inductance
Pins 3-4, with Pins 8-9 shorted, measured at
100 kHz, 0.4 VRMS
7.3 Materials
Item
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Description
Core: PC40EE16-Z, TDK or equivalent gapped for AL of 127 nH/t²
Bobbin: Horizontal 10 pin
Magnet Wire: #39 AWG
Magnet Wire: #33 AWG
Triple Insulated Wire: #27 AWG
Tape, 3M 1298 Polyester Film, 2.0 Mils thick, 8.0 mm wide
Varnish
3000 VAC
2.64 mH, +/-12%
275 kHz (Min.)
500 kHz (Max)
70 µH (Max.)
Page 11 of 32
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