300W Railway Single Output DC-DC Converter
RSD-300 series
File Name:RSD-300-SPEC 2018-01-15
RSD-300E-5
RSD-300E-48
RSD-300F-24
RSD-300E-12
RSD-300F-5
RSD-300F-48
RSD-300E-24
RSD-300F-12
EFFICIENCY
EFFICIENCY
EFFICIENCY
EFFICIENCY
EFFICIENCY
EFFICIENCY
EFFICIENCY
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD
LOAD LOAD
EFFICIENCY
Parallel and Series Connection
A.Operation in Parallel
Since RSD-300 series don't have built-in parallel circuit, it can only use external circuits to achieve the redundant operation but not increase the current rating.
1.Add a diode at the positive-output of each power supply (as shown as below), the current rating of the diode should be larger than the maximum output current rating
and attached to a suitable heat sink. This is only for redundant use (increase the reliability of the system) and users have to check suitability of the circuit by themselves.
I/P
I/P
PS2
IN
E PS1
I/P
I/P
-
D2
+
RL
D1
-
+
2.When using S.P.S. in parallel connection, the leakage current will increase at the same time. This could pose as a shock hazard for the user. So please contact the
B.Operation in Series
RSD-300 can be operated in series. Here are the methods of doing it:
1.Positive and negative terminals are connected as shown as below. According to the connection, you can get the positive and negative output voltages for your loads.
supplier if you have this kind of application.
-V
-
I/P
I/P
I/P
+
PS2
-
I/P
E
IN
PS1
+
R
L
RL
COM
+V
2.Increase the output voltage (current does not change). Because RSD-300 series have no reverse blocking diode in the unit, you should add an external blocking diode
to prevent the damage of every unit while starting up. The voltage rating of the external diode should be larger than V1+V2 (as shown as below).
-
I/P
+
I/P
PS2
2
V
I/P
-
E
IN
PS1
I/P
1
+
V
-V
D
2
V1+V2
L
R
1
D
+V
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
46.8Vdc
36Vdc
25.2Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
46.8Vdc
36Vdc
25.2Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
46.8Vdc
36Vdc
25.2Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
46.8Vdc
36Vdc
25.2Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
93.6Vdc
72Vdc
50.4Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
93.6Vdc
72Vdc
50.4Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
93.6Vdc
72Vdc
50.4Vdc
70%
75%
80%
85%
90%
95%
10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
93.6Vdc
72Vdc
50.4Vdc