- 2 -
TDK-Lambda
ELC12 Series
INSTRUCTION MANUAL
3. Block Diagram
・
Circuit topology
Switching Circuit : Flyback topology
・
Fuse rating : 1A
4. Sequence Time Chart
Input Voltage
Output Voltage
0V
Vout
0V
In
pu
t o
n
In
pu
t o
ff
OVP point
Iout
V(LED)
0A
O
V
P
a
ct
o
n
Output Current
L
E
D
t
ur
n
on
L
E
D
t
ur
n
of
f
L
N
Input
90-265VAC
FG
+
-
Output
Output current
Sensing
In
ru
sh
C
ur
re
nt
L
im
it
C
ir
cu
it
L
in
e
F
ilt
er
R
ec
tif
ie
r
&
F
ilt
er
S
w
it
ch
in
g
C
ir
cu
it
R
ec
tif
ie
r
&
F
ilt
er
Output voltage
Sensing
OVP Circuit
C
on
tr
ol
C
ir
cu
it
Photo-coupler
Short circuit
Protection
