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Buck 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
The values of all input fields can be changed.
The proposed value for
L
is chosen so that
ΔI
L
=0,4·I
in
for
>V
in_max
.
Tip:
The larger the value of
L
, the smaller
ΔI
L
, however this results in a larger physical size of
L
.
Tip:
The higher the switching frequency
f
, the smaller the inductor
L
.
Tip:
The lowest value of
L
is achieved if
ΔI
L
=2·I
in
for
V
in_min
.
Tip:
The higher the frequency
f
and the smaller the inductor
L
, the higher the transistor losses.
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.