EP11 datasheet(12/46 Pages) POWERINT

12 / 46 page

EPR-00011 - 70 W Adapter

22-Jan-01

Page 12 of 46

Power Integrations Inc

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www: http://www.powerint.com

Transformer Documentation

Transformer, T1 (rev. F)

SHIELD

9T # 26AWG x 2

3T# 26AWG x 3 T.I.

9T # 26AWG x 2

2 TURNS OF FOIL

WDG #2

WDG #4

WDG #5

WDG #3

3T# 26AWG x 3 T.I.

WDG #1

1 TURN OF FOIL

CORE CONTACT

ELECTRICAL SPECIFICATIONS:

Electrical strength

60 Hz 1 minute, from Pins 2-6

to Pins 8-12

3000 VAC

Primary Inductance

Pins 1-3; all windings open.

Measure at 130kHz

273

µH +/-10%

Resonant Frequency

Pins 1-3; all windings open.

1.3 MHz (Min.)

Primary leakage

inductance

Pins 1-3; Pins 8,9,11, 12

shorted. Measure at 130kHz.

µH (Max)

MATERIALS:

Item

Description

[1]

Core: FPQ26/20-A, TDK PC40 (or equivalent); gapped for ALG=843nH/T

Lower loss ferrite can be substituted to obtain lower core temperatures.

[2]

Bobbin: TDK BPQ26/20-1112CP (or equivalent)

[3]

Magnet Wire: # 26 AWG Solderable Double Coated

[4]

Triple Insulated Wire: # 26AWG

[5]

Copper foil; 8mm wide Thickness=0.051mm (.002”)

[6]

Copper foil tape; 3M 1181 (or equivalent)

11mm wide

[7]

Tape: 3M 74 Polyester Film (or equivalent)

12mm wide

[8]

Tape: 3M 74 Polyester Film (or equivalent)

9.2mm wide

[9]

Varnish

[10]

Tape: 3M 1298 Polyester Film (or equivalent) 19.5mm wide

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