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WE-FB Flyback Transformer suitable for LT3573/ LT3574/ LT3575/ LT3748

Size L
(mm)
W
(mm)
H
(mm)
EP5 8.26 6.6 5.59
EP7 9.14 9.78 10.54
EP10 15.24 13.34 11.43
EP13 17.75 13.5 12.5
ER9.5 12.95 10.41 5.97
EE16/8/5 24.5 20.2 16.5
EE20/10/6 25 21 16
EFD20 28.7 21.97 11.43
EFD25 32.31 27.03 13.69

Characteristics

  • easy design in solution
  • less external components needed
  • small board space
  • low cost
  • no optocoupler needed!
  • long term reliability voltage control
  • no aging
  • same external parts for different output voltages
  • easy design of custom power supply due to standard circuit and change of transformers and two components for feedback loop
  • Isolation voltage up to 2.5 kV

Applications

  • Isolated power design
  • Sensor interfaces
  • Isolated telecom converters
  • Power over Ethernet

Products

All
EP5
EP7
EP10
EP13
ER9.5
EE16/8/5
EE20/10/6
EFD20
EFD25
Order Code Data­sheet Downloads Vin VOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
VOut3
(V)
IOut3
(A)
VOut4
(V)
IOut4
(A)
L1
(µH)
n ISAT 1
(A)
LSmin.
(µH)
VT
(V (AC))
Size IC Reference Samples
750370042
STE ALT EAG CAD LTS PSP IGS CAD 5 V (DC) 5 0.2 5 0.1 5 0.1 15 1 : 1 : 1 : 1 1.5 0.25 1500 ER9.5 LT3573
750311691
STE ALT EAG CAD LTS PSP IGS CAD 8 - 15 V (DC) 150 0.001 60 1 : 5 0.25 1 1500 EP5 LT3748
750311692
STE ALT EAG CAD LTS PSP IGS CAD 8 - 15 V (DC) 150 0.001 150 0.001 80 1 : 5 1 2 1500 EP7 LT3748
750310471
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 5 2 25 3 : 1 2.6 0.43 1500 EP10 LT3573 & LT3575
750311675
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 5 2 25 3 : 1 2.5 0.13 1500 EP10 LT3573 & LT3575 & LT3748
750311305
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 12 1 50 3 : 1 2.8 1.2 1500 EP10 LT3575
750311306
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 12 1 100 3 : 1 1.65 1.75 1500 EP10 LT3575
750311307
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 24 0.5 100 2 : 1 1.9 2 1500 EP10 LT3574 & LT3575
750311308
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 24 0.5 100 1 : 1 2.1 2.1 1500 EP10 LT3574 & LT3575
750311303
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 5 3 50 5 : 1 2.25 0.8 1500 EP10 LT3575
750311304
STE ALT EAG CAD LTS PSP IGS CAD 9 - 30 V (DC) 5 3 50 4 : 1 2.4 0.85 1500 EP10 LT3574 & LT3575
750310617
STE ALT EAG CAD LTS PSP IGS CAD 9 - 36 V (DC) 12 3 4.5 1 : 1.16 14 0.15 1500 EFD20 LT3748
750311567
STE ALT EAG CAD LTS PSP IGS CAD 10 - 40 V (DC) 5 3 7 2 : 1 11.2 0.8 1500 EP10 LT3575 & LT3748
750311625
STE ALT EAG CAD LTS PSP IGS CAD 10 - 40 V (DC) 3.3 4 9 4 : 1 8 0.35 1500 EP13 LT3575 & LT3748
750311564
STE ALT EAG CAD LTS PSP IGS CAD 10 - 40 V (DC) 5 3 9.07 3 : 1 8 0.12 1500 EP13 LT3575 & LT3748
750311624
STE ALT EAG CAD LTS PSP IGS CAD 10 - 40 V (DC) 15 1 9 1.5 : 1 8 0.18 1500 EP13 LT3575 & LT3748
750310559
STE ALT EAG CAD LTS PSP IGS CAD 12 - 30 V (DC) 3.3 1.5 24 4 : 1 2.1 0.5 1500 EP10 LT3573 & LT3575
750310564
STE ALT EAG CAD LTS PSP IGS CAD 12 - 30 V (DC) 5 1 5 1 63 3 : 1 1.45 0.6 1500 EP10 LT3574 & LT3573 & LT3575
750311486
STE ALT EAG CAD LTS PSP IGS CAD 12 V (DC) 200 0.002 200 100 1 : 10 : 10 2 4.5 1500 EP13 LT3748
750311681
STE ALT EAG CAD LTS PSP IGS CAD 12 V (DC) 200 0.002 200 100 1 : 10 : 10 2 3 1500 EP13 LT3748
750310988
STE ALT EAG CAD LTS PSP IGS CAD 12 V (DC) 48 0.85 14 1 : 4.42 15 0.2 1500 EFD25 LT3748
750311856
STE ALT EAG CAD LTS PSP IGS CAD 16 - 24 V (DC) 15 0.15 15 0.15 15 0.15 15 0.15 3.8 1 : 4 : 4 : 4 : 4 12 0.25 1500 EP13 LT3575 & LT3748
750311911
STE ALT EAG CAD LTS PSP IGS CAD 16 - 24 V (DC) 15 0.2 15 0.2 15 0.2 15 0.2 6.8 1 : 3 : 3 : 3 : 3 13 0.1 1500 EE10/10/6 LT3748
750370059
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 5 1 50 3 : 1 1.6 0.5 1500 EP7 LT3573
750370041
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 5 1 50 3 : 1 1.6 0.45 1500 EP7 LT3574 & LT3573
750370040
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 5 1 30 3 : 1 1.7 1 1500 EP7 LT3574 & LT3573
750370047
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 5 1 30 3 : 1 1.7 1 1500 EP7 LT3574 & LT3573
750370058
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 15 0.4 25 1 : 1 2 0.185 1500 EP7 LT3573
750310799
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 15 0.4 25 1 : 1 2 0.125 1500 EP7 LT3573
750310562
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 12 0.8 25 2 : 1 2.8 0.5 1500 EP10 LT3573 & LT3575
750310563
STE ALT EAG CAD LTS PSP IGS CAD 18 - 30 V (DC) 12 0.8 25 1 : 1 2.8 0.5 1500 EP10 LT3573 & LT3575
750311797
STE ALT EAG CAD LTS PSP IGS CAD 18 - 100 V (DC) 12 2.5 14 2 : 5 : 1 11.5 0.21 4000 EFD20 LT3748
750311385
STE ALT EAG CAD LTS PSP IGS CAD 18 - 60 V (DC) 13 2.3 15 1.25 : 1 6.75 0.1 1500 EFD20 LT3748
750311783
STE ALT EAG CAD LTS PSP IGS CAD 19 - 70 V (DC) 24 2.5 20 1.5 : 1 16 0.17 1500 EFD25 LT3748
750311597
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 5 6 6 3 : 1 9.5 0.3 1500 EFD20 LT3748
750311598
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 12 2.5 8.3 2 : 1 9 0.3 1500 EFD20 LT3748
750311599
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 15 2 8 3 : 2 12 0.5 1500 EFD20 LT3748
750311604
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 24 1.3 8 1 : 1 9.5 0.3 1500 EFD20 LT3748
750311589
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 5 9 6 3 : 1 18 0.2 1500 EFD25 LT3748
750311591
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 15 3 8 3 : 2 20 0.2 1500 EFD25 LT3748
750311590
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 12 3.8 8 2 : 1 18 0.2 1500 EFD25 LT3748
750311592
STE ALT EAG CAD LTS PSP IGS CAD 20 - 48 V (DC) 24 1.9 8 1 : 1 18 0.2 1500 EFD25 LT3748
750311889
STE ALT EAG CAD LTS PSP IGS CAD 28 V (DC) 250 0.1 37 1 : 5 2.95 0.16 500 EFD25 LT3748
750311605
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 5 6 15 7 : 2 9.5 0.5 1500 EFD20 LT3748
750311607
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 12 2.5 14 5 : 2 9.5 0.5 1500 EFD20 LT3748
750311600
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 15 2 12 2 : 1 11 0.5 1500 EFD20 LT3748
750311608
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 24 1.3 12 3 : 2 9 0.5 1500 EFD20 LT3748
750311593
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 5 9 15 7 : 2 18 0.3 1500 EFD25 LT3748
750311595
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 15 3 12 2 : 1 16 0.2 1500 EFD25 LT3748
750311594
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 12 3.8 15 5 : 2 18 0.4 1500 EFD25 LT3748
750311596
STE ALT EAG CAD LTS PSP IGS CAD 30 - 75 V (DC) 24 1.9 12 3 : 2 18 0.2 1500 EFD25 LT3748
750311342
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 3 15 2 : 1 5.8 0.65 1500 EP10 LT3575
750311424
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 12 1 100 3 : 1 2.4 0.9 1500 EP13 LT3748
750311456
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 12 1 100 3 : 1 2.4 0.9 2500 EP13 LT3748
750311458
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 3.3 4 15 3 : 1 5 0.175 2500 EP13 LT3575 & LT3748
750311422
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 4 50 5 : 1 3.3 0.6 1500 EP13 LT3575 & LT3748
750311423
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 4 50 4 : 1 3.85 0.6 1500 EP13 LT3575 & LT3748
750311457
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 4 50 4 : 1 3.7 0.6 2500 EP13 LT3575 & LT3748
750311688
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 4 50 5 : 1 3.1 0.6 1500 EP13 LT3575 & LT3748
750311689
STE ALT EAG CAD LTS PSP IGS CAD 36 V (DC) 5 4 50 4 : 1 3.7 0.6 2500 EP13 LT3575 & LT3748
750311439
STE ALT EAG CAD LTS PSP IGS CAD 37 - 57 V (DC) 12 2.1 37 2 : 1 2.8 0.75 1500 EP13 LT3575 & LT3748
750811048
STE ALT EAG CAD LTS PSP IGS CAD 100 - 400 V (DC) 30 0.3 1500 4.5 : 1 0.65 22 4500 EE16/8/5 LT3748
750311771
STE ALT EAG CAD LTS PSP IGS CAD 100 - 400 V (DC) 15 3 500 6 : 1 2.5 5 2500 EFD25 LT3748
Order Code Data­sheet
750370042
750311691
750311692
750310471
750311675
750311305
750311306
750311307
750311308
750311303
750311304
750310617
750311567
750311625
750311564
750311624
750310559
750310564
750311486
750311681
750310988
750311856
750311911
750370059
750370041
750370040
750370047
750370058
750310799
750310562
750310563
750311797
750311385
750311783
750311597
750311598
750311599
750311604
750311589
750311591
750311590
750311592
750311889
750311605
750311607
750311600
750311608
750311593
750311595
750311594
750311596
750311342
750311424
750311456
750311458
750311422
750311423
750311457
750311688
750311689
750311439
750811048
750311771
Samples
Order Code Data­sheet Downloads Vin VOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
VOut3
(V)
IOut3
(A)
VOut4
(V)
IOut4
(A)
L1
(µH)
n ISAT 1
(A)
LSmin.
(µH)
VT
(V (AC))
Size IC Reference Samples

Comments

  • Dependant on application, the transformer specification can slightly differ to data sheet.