PAH300
･
350S24
-SERIES
TDK-Lambda
9
is within specified maximumoutput power.
Furthermore, reduce noise effect by using shield wire,
twist pair, or parallel pattern.
Load
Stabilize the output voltage
+
-
+V
-V
-S
+S
+
+
ＴＲＭ
at load terminals
Fig.9-1 Remote Sensing is in Use
Load
Stabilize the output voltage
+
-
+V
-V
-S
+S
+
ＴＲＭ
at output terminals
Fig.9-2 Remote Sensing is Not in Use
10. ON/OFF Control (CNT terminal)
Without turning the input supply on and off, the
output can be enabled and disabled using this
function. This function also can be used for output
sequence of plural power modules.
There are two kinds of logic control, Negative logic
control and Positive logic control, depend on the
option selected.
ON/OFF control circuit is on the primary side (the
input side). For secondary control, isolation can be
achieved through the use of an opto-coupler or relay.
Notes
1. When ON/OFF control function is not used for
the Standard and /T option, CNT terminal should
be shorted to –Vin terminal.
2. When ON/OFF control function is not used for
the /P option and /PT option, CNT terminal
should be opened.
3. When using long wiring, for prevention of noise,
attach a 0.1µF capacitor between CNT terminal
and –Vin terminal.
4. At L level, maximum source current from CNT
terminal to –Vin terminal is 0.5mA
5. The maximum CNT terminal voltage is 35V.
(1)
Output ON/OFF control
Fig.10-1 CNT Connection (1)
(2)
Secondary (output side) control
Fig.10-2 CNT Connection (2)
11. Parallel Operation
Parallel Operation can not be used.
12. Series Operation
Series operation is possible for PAH300
･
350S24
series. Connections shown fig. 12-1 and fig. 12-2 are
possible.
+
+
+
-
Load
+V
+S
-S
-V
TRM
+V
+S
-S
-V
TRM
Fig.12-1 Series Operation due to High Output
Voltage
Logic
CNT Terminal Level to -Vin Terminal
Output status
Standard
H Level (4V
≦
H
≦
35V) or Open
OFF
/T option
L Level (0V
≦
L
≦
0.8V) or Short
ON
/P option
H Level (4V
≦
H
≦
35V) or Open
ON
/PT option
L Level (0V
≦
L
≦
0.8V) or Short
OFF
Negative Logic
Positive Logic
+Vin
CNT
-Vin
Transistor, Relay
or Equivalent
PAH200H
series
Power
module
+Vin
CNT
-Vin
Secondary
(output side)
PAH200H
series
Power
module
