PAH300
･
350S24
-SERIES
2
TDK-Lambda
■
Block Diagram
+Vin
-Vin
CNT
O
C
P
In
p
ut
V
ol
ta
ge
D
et
ec
to
r
O
T
P
O
V
P
D
e
te
ct
or
TRM
+S
-S
C
o
nt
ro
l C
ir
cu
it
In
p
ut
F
ilt
er
-V
+V
B
ia
s
P
o
w
e
r
S
up
pl
y
O
N
/O
F
F
C
on
tr
o
l
S
w
itc
hi
n
g
R
e
ct
ifi
er
O
ut
p
ut
F
ilt
e
r
Baseplate
CASE
Switching Frequency (fixed) : 330kHz (typ.)
■
Sequence Time Chart
(For Standard Model with Negative logic for ON/OFF control.)
Input V oltage
Output V oltage
*1
ON/OFF Control
L
H
0V
Vin
0V
Vout
Reset
More than
100m s
O VP Set Point
O C P Set Point
In
p
u
t O
N
C
on
tr
ol
O
N
C
o
n
tr
o
l O
F
F
O
C
P
O
N
O
V
P
T
ri
p
In
p
u
t O
F
F
In
p
ut
O
N
O
C
P
O
F
F
C
o
n
tr
o
l O
F
F
C
o
nt
ro
l O
N
O
T
P
O
N
O
T
P
O
F
F
*1 level : 4
≦
H
≦
35(V) or Open
0
≦
L
≦
0.8(V) or Short
