EPR-85 Datasheet, PDF (11/32 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP 85 - 2 W Charger using LinkSwitch-LP

04-Oct-2005
EP-85 6 V, 330 mA Low Cost Charger
7 Transformer Specification
7.1 Electrical Diagram
WDG #1
WDG #2
5
Bias
0.2 mm 25T
4
2
Primary
0.14 mm 108T
1
7
Secondary
WDG #4
0.5 mm T.I.W. 8T
6
Cut
Shield
WDG #3
0.25 mm × 3 8T
2
: Winding Start, forward winding direction
: Winding Start, reversed winding direction
Figure 5 – Transformer Electrical Diagram.
7.2 Electrical Specifications
Electrical Strength
Primary Inductance
Primary Winding Capacitance
Primary Leakage Inductance
60 Hz 1 min, from pins 1-5 to pins 6-7
From pins 1-2, all other windings open
All windings open
From pins 1-2 with pins 6-7 shorted
3000 VAC
2.7 mH, -/+5%
50 pF (Max.)
75 µH (Max.)
Page 11 of 32
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