EPR-91 Datasheet, PDF (13/36 Pages) Power Integrations, Inc. – Engineering Prototype Report for EP-91 - 12 W Power Supply using

7-Feb-2006
EP-91 12 V, 1 A, Universal Input Supply
7 Transformer Specification
7.1 Electrical Diagram
NC
Cancellation
WDG # 1
14T # 30 AWG X2
WDG # 2
1
Primary
56T # 30 AWG
3
4
Bias
WDG # 3 _{6T # 26 AWG X3}
2
Bias
6T # 26 AWG X3
WDG # 4
5
8
Secondary _{WDG # 5}
7T # 26 T.I.W
6
Figure 4 – Transformer Electrical Diagram.
7.2 Electrical Specifications
Electrical Strength
Primary Inductance
Resonant Frequency
Primary Leakage Inductance
1 second, 60 Hz, from Pins 1-5 to Pins 6-10
Pins 1-3, all other windings open, measured at
100 kHz, 0.4 V RMS
Pins 1-3, all other windings open
Pins 1-3, with Pins 6-8 shorted, measured at
100 kHz, 0.4 V RMS
3000 VAC
1050 µH, ±10%
500 kHz (Min.)
50 µH (Max.)
Page 13 of 36
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