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Single Transistor Forward Converter
V
in_min
/ V
V
in_max
/ V
V
in
/ V
for the calculations
V
out
/ V
I
out
/ A
f / kHz
L / H
ΔI
L
/ A
for V
in_max
Proposal
Proposal
N
1
/ N
2
:
The values of all input fields can be changed.
The proposed value for
L
is chosen so that
ΔI
L
=0,4·I
out
for
>V
in_max
.
The proposed value for
N
1
/N
2
is chosen such that
V
out
is just achieved when
V
in
=
V
in_min
.
This volume is chosen such that the transformer temperature-rise, during operation is under 30K and the coil with a current density
S
= 3A/mm
2
fits into the available winding area.
The wire cross sections are always suggested for a current density of 3A/mm
2
Tip:
Its best not to modify
N
1
/N
2
;-)
By
Dr. Heinz Schmidt-Walter
, Holger Wenzel, Thomas Zänker, Richard Morgan and Johnalan Kegan.
By Dr. Heinz
Schmidt-Walter, Holger Wenzel, Thomas
Zänker, Richard Morgan and Johnalan Kegan.