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

  • Picture
  • Dimensions
Please choose size
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 25.0 21.0 16.0
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

  • EP5
  • EP7
  • EP10
  • EP13
  • ER9.5
  • EE16/8/5
  • EE20/10/6
  • EFD20
  • EFD25
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SPEC Order Code UO1
(V)
IO1
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750311691 150 0.001 60 1 : 5 0.25 1 1500 EP5 LT3748 8-15 750311691 (rev1).stp750311691 (rev1).igs750311691_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
UO2
(V)
IO2
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750310799 15 0.4 25 1 : 1 2 0.125 1500 EP7 LT3573 18-30 750310799 (rev1).stp750310799 (rev1).igs750310799_LTspice (rev1).zip
PDF 750311692 150 0.001 150 0.001 80 1 : 5 1 2 1500 EP7 LT3748 8-15 750311692 (rev1).stp750311692 (rev1).igs750311692_LTspice (rev1).zip
PDF 750370040 5 1 30 3 : 1 1.7 1 1500 EP7 LT3574 & LT3573 18-30 750370040 (rev1).stp750370040 (rev1).igs750370040_LTspice (rev1).zip
PDF 750370041 5 1 50 3 : 1 1.6 0.45 1500 EP7 LT3574 & LT3573 18-30 750370041 (rev1).stp750370041 (rev1).igs750370041_LTspice (rev1).zip
PDF 750370047 5 1 30 3 : 1 1.7 1 1500 EP7 LT3574 & LT3573 18-30 750370047 (rev1).stp750370047 (rev1).igs750370047_LTspice (rev1).zip
PDF 750370058 15 0.4 25 1 : 1 2 0.185 1500 EP7 LT3573 18-30 750370058 (rev1).stp750370058 (rev1).igs750370058_LTspice (rev1).zip
PDF 750370059 5 1 50 3 : 1 1.6 0.5 1500 EP7 LT3573 18-30 750370059 (rev1).stp750370059 (rev1).igs750370059_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
UO2
(V)
IO2
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750310471 5 2 25 3 : 1 2.6 0.43 1500 EP10 LT3573 & LT3575 9-30 750310471 (rev1).stp750310471 (rev1).igs750310471_LTspice (rev1).zip
PDF 750310559 3.3 1.5 24 4 : 1 2.1 0.5 1500 EP10 LT3573 & LT3575 12-30 750310559 (rev1).stp750310559 (rev1).igs750310559_LTspice (rev1).zip
PDF 750310562 12 0.8 25 2 : 1 2.8 0.5 1500 EP10 LT3573 & LT3575 18-30 750310562 (rev1).stp750310562 (rev1).igs750310562_LTspice (rev1).zip
PDF 750310563 12 0.8 25 1 : 1 2.8 0.5 1500 EP10 LT3573 & LT3575 18-30 750310563 (rev1).stp750310563 (rev1).igs750310563_LTspice (rev1).zip
PDF 750310564 5 1 5 1 63 3 : 1 1.45 0.6 1500 EP10 LT3574 & LT3573 & LT3575 12-30 750310564 (rev1).stp750310564 (rev1).igs750310564_LTspice (rev1).zip
PDF 750311303 5 3 50 5 : 1 2.25 0.8 1500 EP10 LT3575 9-30 750311303 (rev1).stp750311303 (rev1).igs750311303_LTspice (rev1).zip
PDF 750311304 5 3 50 4 : 1 2.4 0.85 1500 EP10 LT3574 & LT3575 9-30 750311304 (rev1).stp750311304 (rev1).igs750311304_LTspice (rev1).zip
PDF 750311305 12 1 50 3 : 1 2.8 1.2 1500 EP10 LT3575 9-30 750311305 (rev1).stp750311305 (rev1).igs750311305_LTspice (rev1).zip
PDF 750311306 12 1 100 3 : 1 1.65 1.75 1500 EP10 LT3575 9-30 750311306 (rev1).stp750311306 (rev1).igs750311306_LTspice (rev1).zip
PDF 750311307 24 0.5 100 2 : 1 1.9 2 1500 EP10 LT3574 & LT3575 9-30 750311307 (rev1).stp750311307 (rev1).igs750311307_LTspice (rev1).zip
PDF 750311308 24 0.5 100 1 : 1 2.1 2.1 1500 EP10 LT3574 & LT3575 9-30 750311308 (rev1).stp750311308 (rev1).igs750311308_LTspice (rev1).zip
PDF 750311342 5 3 15 2 : 1 5.8 0.65 1500 EP10 LT3575 36 750311342 (rev1).stp750311342 (rev1).igs750311342_LTspice (rev1).zip
PDF 750311567 5 3 7 2 : 1 11.2 0.8 1500 EP10 LT3575 & LT3748 10-40 750311567 (rev1).stp750311567 (rev1).igs750311567_LTspice (rev1).zip
PDF 750311675 5 2 25 3 : 1 2.5 0.13 1500 EP10 LT3573 & LT3575 & LT3748 9-30 750311675 (rev1).stp750311675 (rev1).igs750311675_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
UO2
(V)
IO2
(A)
UO3
(V)
IO3
(A)
UO4
(V)
IO4
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750311422 5 4 50 5 : 1 3.3 0.6 1500 EP13 LT3575 & LT3748 36 750311422 (rev1).stp750311422 (rev1).igs750311422_LTspice (rev1).zip
PDF 750311423 5 4 50 4 : 1 3.85 0.6 1500 EP13 LT3575 & LT3748 36 750311423 (rev1).stp750311423 (rev1).igs750311423_LTspice (rev1).zip
PDF 750311424 12 1 100 3 : 1 2.4 0.9 1500 EP13 LT3748 36 750311424 (rev1).stp750311424 (rev1).igs750311424_LTspice (rev1).zip
PDF 750311439 12 2.1 37 2 : 1 2.8 0.75 1500 EP13 LT3575 & LT3748 37-57 750311439 (rev1).stp750311439 (rev1).igs750311439_LTspice (rev1).zip
PDF 750311456 12 1 100 3 : 1 2.4 0.9 2500 EP13 LT3748 36 750311456 (rev1).stp750311456 (rev1).igs750311456_LTspice (rev1).zip
PDF 750311457 5 4 50 4 : 1 3.7 0.6 2500 EP13 LT3575 & LT3748 36 750311457 (rev1).stp750311457 (rev1).igs750311457_LTspice (rev1).zip
PDF 750311458 3.3 4 15 3 : 1 5 0.175 2500 EP13 LT3575 & LT3748 36 750311458 (rev1).stp750311458 (rev1).igs750311458_LTspice (rev1).zip
PDF 750311486 200 0.002 200 100 1 : 10 : 10 2 4.5 1500 EP13 LT3748 12 750311486 (rev1).stp750311486 (rev1).igs750311486_LTspice (rev1).zip
PDF 750311564 5 3 9.07 3 : 1 8 0.12 1500 EP13 LT3575 & LT3748 10-40 750311564 (rev1).stp750311564 (rev1).igs750311564_LTspice (rev1).zip
PDF 750311624 15 1 9 1.5 : 1 8 0.18 1500 EP13 LT3575 & LT3748 10-40 750311624 (rev1).stp750311624 (rev1).igs750311624_LTspice (rev1).zip
PDF 750311625 3.3 4 9 4 : 1 8 0.35 1500 EP13 LT3575 & LT3748 10-40 750311625 (rev1).stp750311625 (rev1).igs750311625_LTspice (rev1).zip
PDF 750311681 200 0.002 200 100 1 : 10 : 10 2 3 1500 EP13 LT3748 12 750311681 (rev1).stp750311681 (rev1).igs750311681_LTspice (rev1).zip
PDF 750311688 5 4 50 5 : 1 3.1 0.6 1500 EP13 LT3575 & LT3748 36 750311688 (rev1).stp750311688 (rev1).igs750311688_LTspice (rev1).zip
PDF 750311689 5 4 50 4 : 1 3.7 0.6 2500 EP13 LT3575 & LT3748 36 750311689 (rev1).stp750311689 (rev1).igs750311689_LTspice (rev1).zip
PDF 750311856 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 16-24 750311856 (rev1).stp750311856 (rev1).igs750311856_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
UO2
(V)
IO2
(A)
UO3
(V)
IO3
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750370042 5 0.2 5 0.1 5 0.1 15 1 : 1 : 1 : 1 1.5 0.25 1500 ER9.5 LT3573 5 750370042 (rev1).stp750370042 (rev1).igs750370042_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750811048 30 0.3 1500 4.5 : 1 0.65 22 4500 EE16/8/5 LT3748 100-400 750811048 (rev1).stp750811048 (rev1).igs750811048_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
UO2
(V)
IO2
(A)
UO3
(V)
IO3
(A)
UO4
(V)
IO4
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750311911 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 16-24 750311911 (rev1).stp750311911 (rev1).igs750311911_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750310617 12 3 4.5 1 : 1.16 14 0.15 1500 EFD20 LT3748 9-36 750310617 (rev1).stp750310617 (rev1).igs750310617_LTspice (rev1).zip
PDF 750311385 13 2.3 15 1.25 : 1 6.75 0.1 1500 EFD20 LT3748 18-60 750311385 (rev1).stp750311385 (rev1).igs750311385_LTspice (rev1).zip
PDF 750311597 5 6 6 3 : 1 9.5 0.3 1500 EFD20 LT3748 20-48 750311597 (rev1).stp750311597 (rev1).igs750311597_LTspice (rev1).zip
PDF 750311598 12 2.5 8.3 2 : 1 9 0.3 1500 EFD20 LT3748 20-48 750311598 (rev1).stp750311598 (rev1).igs750311598_LTspice (rev1).zip
PDF 750311599 15 2 8 3 : 2 12 0.5 1500 EFD20 LT3748 20-48 750311599 (rev1).stp750311599 (rev1).igs750311599_LTspice (rev1).zip
PDF 750311600 15 2 12 2 : 1 11 0.5 1500 EFD20 LT3748 30-75 750311600 (rev1).stp750311600 (rev1).igs750311600_LTspice (rev1).zip
PDF 750311604 24 1.3 8 1 : 1 9.5 0.3 1500 EFD20 LT3748 20-48 750311604 (rev1).stp750311604 (rev1).igs750311604_LTspice (rev1).zip
PDF 750311605 5 6 15 7 : 2 9.5 0.5 1500 EFD20 LT3748 30-75 750311605 (rev1).stp750311605 (rev1).igs750311605_LTspice (rev1).zip
PDF 750311607 12 2.5 14 5 : 2 9.5 0.5 1500 EFD20 LT3748 30-75 750311607 (rev1).stp750311607 (rev1).igs750311607_LTspice (rev1).zip
PDF 750311608 24 1.3 12 3 : 2 9 0.5 1500 EFD20 LT3748 30-75 750311608 (rev1).stp750311608 (rev1).igs750311608_LTspice (rev1).zip
PDF 750311797 12 2.5 14 2 : 5 : 1 11.5 0.21 4000 EFD20 LT3748 18-100 750311797 (rev1).stp750311797 (rev1).igs750311797_LTspice (rev1).zip
SPEC Order Code UO1
(V)
IO1
(A)
L
(µH)
n ISAT
(A)
LS
(µH)
UT
(V (AC))
Size IC Reference Ui
(V (DC))
Files Samples
PDF 750310988 48 0.85 14 1 : 4.42 15 0.2 1500 EFD25 LT3748 12 750310988 (rev1).stp750310988 (rev1).igs750310988_LTspice (rev1).zip
PDF 750311589 5 9 6 3 : 1 18 0.2 1500 EFD25 LT3748 20-48 750311589 (rev1).stp750311589 (rev1).igs750311589_LTspice (rev1).zip
PDF 750311590 12 3.8 8 2 : 1 18 0.2 1500 EFD25 LT3748 20-48 750311590 (rev1).stp750311590 (rev1).igs750311590_LTspice (rev1).zip
PDF 750311591 15 3 8 3 : 2 20 0.2 1500 EFD25 LT3748 20-48 750311591 (rev1).stp750311591 (rev1).igs750311591_LTspice (rev1).zip
PDF 750311592 24 1.9 8 1 : 1 18 0.2 1500 EFD25 LT3748 20-48 750311592 (rev1).stp750311592 (rev1).igs750311592_LTspice (rev1).zip
PDF 750311593 5 9 15 7 : 2 18 0.3 1500 EFD25 LT3748 30-75 750311593 (rev1).stp750311593 (rev1).igs750311593_LTspice (rev1).zip
PDF 750311594 12 3.8 15 5 : 2 18 0.4 1500 EFD25 LT3748 30-75 750311594 (rev1).stp750311594 (rev1).igs750311594_LTspice (rev1).zip
PDF 750311595 15 3 12 2 : 1 16 0.2 1500 EFD25 LT3748 30-75 750311595 (rev1).stp750311595 (rev1).igs750311595_LTspice (rev1).zip
PDF 750311596 24 1.9 12 3 : 2 18 0.2 1500 EFD25 LT3748 30-75 750311596 (rev1).stp750311596 (rev1).igs750311596_LTspice (rev1).zip
PDF 750311771 15 3 500 6 : 1 2.5 5 2500 EFD25 LT3748 100-400 750311771 (rev1).stp750311771 (rev1).igs750311771_LTspice (rev1).zip
PDF 750311783 24 2.5 20 1.5 : 1 16 0.17 1500 EFD25 LT3748 19-70 750311783 (rev1).stp750311783 (rev1).igs750311783_LTspice (rev1).zip
PDF 750311889 250 0.1 37 1 : 5 2.95 0.16 500 EFD25 LT3748 28 750311889 (rev1).stp750311889 (rev1).igs750311889_LTspice (rev1).zip

Comments

  • Dependant on application, the transformer specification can slightly differ to data sheet.
Tags: WE-FB, UtFB, Transformer for DC/DC Converter, WE-FB Flyback Transformer suitable for LT3573/ LT3574/ LT3575/ LT3748