User Instructions

2
1. Technical description
The DC/DC 48V/2,5A (DC/DC48250) step up converter increasing the input voltage from the range between 18V÷28V
DC to the voltage range of 48V DC at the output. The maximum load current is Imax=2,5A (Pmax = 120W). The module does not
feature galvanic isolation between input/output (IN-AUX) and operates on common "ground" (0V) potential (IN- and AUX- terminals are
galvanically connected = common terminal).
1.1. Block diagram (Fig.1).
Fig.1. Block diagram of the converter’s module.
1.2. Description of components and connectors (Fig. 2, Table 1, Table 2).
Table 1.
No.
[fig.2]
Component’s description
[1]
IN LED light - red
[2]
Power connector of the DC/DC module
[3]
AUX LED light – green
[4]
The DC/DC module’s connector (power supply and PSU)
[5]
PSU LED light – red
[6]
Mounting strip
Table 2.
[2], [4]
Description of module’s connectors
+IN
- IN
DC supply input
(18V÷28V DC, power consumption from the power source)
+AUX
- AUX
DC supply output
(+AUX= +U, -AUX=GND)
PSU
Technical output of failure (OC type): OLP/SCP activation (short-circuit or overload
protection)
Failure status: hi-Z (high impedance), normal status: L (0V, GND)
Fig.2. The converter module’s view.