DER-56
UPS Battery Charger - LNK520
April 20, 2005
7 Transformer Specification
7.1 Electrical Diagram
Figure 4 – Transformer Electrical Diagram
7.2 Electrical Specifications
Electrical Strength
1 second, 60 Hz, from Pins 1-5 to Pins 6-7
Pins 1-2, all other windings open, measured at
100 kHz, 0.4 VRMS
3000 VAC
5000µH,
-10/+10%
Primary Inductance
Resonant Frequency
Primary Leakage Inductance
Pins 1-2, all other windings open
Pins 1-2, with Pins 6-7 shorted, measured at
100 kHz, 0.4 VRMS
500 kHz (Min.)
250 µH (Max.)
7.3 Materials
Item
Description
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
Core: EE16, PC40EE16 TDK – Al = 124nH/T2
Bobbin: Horizontal 10 pin
Magnet Wire: #33 AWG
Magnet Wire: #36 AWG
Magnet Wire: #28 AWG
Triple Insulated Wire: #32 AWG
Tape: 3M 1298 Polyester Film (white) 2.2mils thick
Varnish
Power Integrations
Tel: +1 408 414 9200 Fax: +1 408 414 9201
www.powerint.com
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