EPR-54 Datasheet, PDF (31/40 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 54 - 2.75 W Charger/Adapter Using LNK520P

07-May-2004
EPR-54 – LinkSwitch 2.75 W Low Cost Charger / Adapter
11.4 Transformer Specification
11.4.1 Transformer Winding
WD #1
5
38 T
#33 AWG
WD #3
WD #2
4
Floating
11T #28X2
3
1
7
12 T #26 TIW
6
Primary
110 T #33 AWG
2
Figure 27 – Transformer Electrical Diagram,
Alternate EE16.
WD #4
Secondary
11.4.2 Electrical Specifications
Electrical Strength
Primary Inductance
(Pin 1 to Pin 3)
Resonant Frequency
Primary Leakage
Inductance
60Hz 1minute, from Pins 1-5 to
Pins 6-7
All windings open
All windings open
Pins 6-7 shorted
3000 VAC
2.73 mH +/- 10%
510 kHz (Min.)
60 µH (Max.)
Page 31 of 40
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