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EPR-54 Datasheet(PDF) 11 Page - Power Integrations, Inc.

Part # EPR-54
Description  Engineering Prototype Report for EP 54 - 2.75 W Charger/Adapter Using LNK520P
Download  40 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

EPR-54 Datasheet(HTML) 11 Page - Power Integrations, Inc.

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07-May-2004
EPR-54 – LinkSwitch 2.75 W Low Cost Charger / Adapter
7 Transformer Specification
Note: To correctly center the output voltage over a junction temperature of 25
°C to 65 °C
(approx ambient 0
°C to 40 °C), the design software and design methodology may
produce a slightly different transformer design than the one shown here.
7.1 Electrical Diagram
26T #31 AWG
Shield & Bias
4
5
100T #32 AWG
Primary
2
1
1
3
Shield
33T#32 AWG
WDG #1
6
8T #30 T.I.W
Secondary
7
WDG #2
WDG #3
WDG #4
Figure 5 – Transformer Electrical Diagram.
7.2 Electrical Specifications
Electrical Strength
1 second, 60 Hz, from Pins 1-5 to Pins 6-10
3000 VAC
Primary Inductance
Pins 1-2, all other windings open, measured at
100 kHz, 0.4 VRMS
2.52 mH, +/-10%
Resonant Frequency
Pins 1-2, all other windings open
400 kHz (Min.)
Primary Leakage Inductance
Pins 1-2, with Pins 6-7 shorted, measured at
100 kHz, 0.4 VRMS
80
µH (Max.)
Page 11 of 40
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com


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