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WE-FLEX HV Flexible Transformer for DC/DC Converter

Size L
(mm)
W
(mm)
H
(mm)
ER11.5 12.9 13 6.2
ER14.5/6 16.3 16.8 7.4
EFD15 22.1 17.5 9
EFD20 29.5 21.5 12

Characteristics

  • Transformer with 6 identical windings
  • 4 sizes with 5 different lengths of air gap each
  • Isolation voltage up to 1.5 kVAC
  • Low leakage inductance
  • Operating temperature: –40 ºC to +125 ºC
  • By using different circuits more than 375 transformer solutions and about 125 choke solutions possible. Consequently, quick prototyping possibilities
  • EFD size parts provide Basic insulation for a working voltage of 250VRMS when they are connected appropriate

Applications

  • Flyback converters
  • Forward converters
  • Push-pull converters
  • Step-up/step-down converters
  • SEPIC

Products

All
ER11.5
ER14.5/6
EFD15
EFD20
Order Code Data­sheet Downloads LBASE
(µH)
n IR BASE
(A)
ISAT BASE
(A)
RDC BASE
(mΩ)
∫Udt Base
(µVs)
LS Base
(µH)
VT
(V (AC))
Samples
749196547
STE ALT EAG CAD LTS IGS CAD 3.4 1:1:1:1:1:1 2.3 3.93 36 83.6 0.18 1500
749196537
STE ALT EAG CAD LTS IGS CAD 4.3 1:1:1:1:1:1 2.3 3.24 36 83.6 0.18 1500
749196527
STE ALT EAG CAD LTS IGS CAD 5.3 1:1:1:1:1:1 2.3 2.81 36 83.6 0.18 1500
749196248
STE ALT EAG CAD LTS IGS CAD 6.6 1:1:1:1:1:1 0.8 1.6 200 63.4 0.17 1500
749196548
STE ALT EAG CAD LTS IGS CAD 7.6 1:1:1:1:1:1 1.35 2.98 102 123.4 0.24 1500
749196348
STE ALT EAG CAD LTS IGS CAD 7.9 1:1:1:1:1:1 0.83 1.41 145 61.3 0.13 1500
749196238
STE ALT EAG CAD LTS IGS CAD 8.3 1:1:1:1:1:1 0.8 1.3 200 63.4 0.17 1500
749196148
STE ALT EAG CAD LTS IGS CAD 8.5 1:1:1:1:1:1 0.5 1.02 344 49.3 0.3 1500
749196338
STE ALT EAG CAD LTS IGS CAD 9.3 1:1:1:1:1:1 0.83 1.13 145 61.3 0.13 1500
749196538
STE ALT EAG CAD LTS IGS CAD 9.7 1:1:1:1:1:1 1.35 2.2 102 123.4 0.24 1500
749196517
STE ALT EAG CAD LTS IGS CAD 9.9 1:1:1:1:1:1 2.3 1.35 36 83.6 0.18 1500
749196138
STE ALT EAG CAD LTS IGS CAD 10.9 1:1:1:1:1:1 0.5 0.8 344 49.3 0.3 1500
749196228
STE ALT EAG CAD LTS IGS CAD 11.6 1:1:1:1:1:1 0.8 0.94 200 63.4 0.17 1500
749196528
STE ALT EAG CAD LTS IGS CAD 12 1:1:1:1:1:1 1.35 1.71 102 123.4 0.24 1500
749196328
STE ALT EAG CAD LTS IGS CAD 14.2 1:1:1:1:1:1 0.83 0.72 145 61.3 0.13 1500
749196128
STE ALT EAG CAD LTS IGS CAD 14.7 1:1:1:1:1:1 0.5 0.55 344 49.3 0.3 1500
749196218
STE ALT EAG CAD LTS IGS CAD 21.6 1:1:1:1:1:1 0.8 0.48 200 63.4 0.17 1500
749196518
STE ALT EAG CAD LTS IGS CAD 22.3 1:1:1:1:1:1 1.35 0.93 102 123.4 0.24 1500
749196318
STE ALT EAG CAD LTS IGS CAD 23.3 1:1:1:1:1:1 0.83 0.43 145 61.3 0.13 1500
749196118
STE ALT EAG CAD LTS IGS CAD 27.4 1:1:1:1:1:1 0.5 0.29 344 49.3 0.3 1500
749196507
STE ALT EAG CAD LTS IGS CAD 87.1 1:1:1:1:1:1 2.3 0.16 36 86.3 0.18 1500
749196208
STE ALT EAG CAD LTS IGS CAD 140 1:1:1:1:1:1 0.8 0.07 200 63.4 0.17 1500
749196308
STE ALT EAG CAD LTS IGS CAD 153.8 1:1:1:1:1:1 0.83 0.06 145 61.3 0.13 1500
749196508
STE ALT EAG CAD LTS IGS CAD 196 1:1:1:1:1:1 1.35 0.1 102 123.4 0.24 1500
749196108
STE ALT EAG CAD LTS IGS CAD 224.6 1:1:1:1:1:1 0.5 0.04 344 49.3 0.3 1500
Order Code Data­sheet
749196547
749196537
749196527
749196248
749196548
749196348
749196238
749196148
749196338
749196538
749196517
749196138
749196228
749196528
749196328
749196128
749196218
749196518
749196318
749196118
749196507
749196208
749196308
749196508
749196108
Samples
Order Code Data­sheet Downloads LBASE
(µH)
n IR BASE
(A)
ISAT BASE
(A)
RDC BASE
(mΩ)
∫Udt Base
(µVs)
LS Base
(µH)
VT
(V (AC))
Samples