5.3 Redundancy operation
¡
Parallel operation is not possible.
¡
Redundancy operation is available by wiring as shown below.
Power
Supply
Load
I
1
I
3
I
2
+
+
-
-
Power
Supply
Fig.5.3 Redundancy operation
¡
Even a slight difference in output voltage can affect the balance
between the values of I
1
and I
2
.
Please make sure that the value of I
3
does not exceed the rated
current of the power supply.
I
3
[
the rated current value
6 Implementation
-
Mounting Method
6.1 Mounting method
¡
The unit can be mounted in any direction. When two or more pow-
er supplies are used side by side, position them with proper inter-
vals to allow enough air ventilation. The temperature around each
power supply should not exceed the temperature range shown in
derating curve.
¡
Avoid placing the DC input line pattern layout underneath the unit.
It will increase the line conducted noise. Make sure to leave an
ample distance between the line pattern layout and the unit. Also
avoid placing the DC output line pattern underneath the unit be-
cause it may increase the output noise. Lay out the pattern away
from the unit.
¡
Avoid placing the signal line pattern layout underneath the unit be-
cause the power supply might become unstable.
Lay out the pattern away from the unit.
¡
Avoid placing pattern layout in hatched area shown in Fig.6.1 to
insulate between pattern and power supply.
5
7
10
2
1
13
+VOUT
+S
-VOUT
+VIN
RC
-VIN
TRM
-S
(a) CHS60
+VOUT
+S
-VOUT
+VIN
RC
-VIN
TRM
-S
5
14
(b) CHS80
-VIN
RC
+VIN
-VOUT
-S
TRM
+S
+VOUT
26.2
7
(C) CHS120
+VOUT
+S
-VOUT
+VIN
RC
-VIN
TRM
-S
37
8
5
24
(d) CHS200
48
1.5
+VOUT
+S
-VOUT
+VIN
RC
-VIN
TRM
-S
(e) CHS300
41
8
+VOUT
+S
-VOUT
+VIN
RC
-VIN
TRM
-S
(f) CHS400
Dimensions in mm
Fig.6.1 Prohibition area of pattern layout (top view)
CHS-27
DC-DC Converters Bus Converter.Power Module Type
Instruction Manual
