User Instructions

DC/DC48250

v.1.0

DC/DC 48V/2,5A Step up DC/DC converter

EN**

Edition: 2 from 15.01.2016

Supercedes the edition: 1 from 26.08.2015

The module’s features:

 The step up DC/DC converter

 Example of use: increasing voltage from 24V to 48V DC

 The input voltage range: 18÷28V DC

 The output voltage range: 48V DC

 The maximum load current 2,5A (120W)

 The PSU technical output indicating converter failure

triggered by:

 Short-circuit of the output

 Output overload

 Protections:

 Short-circuit protection SCP

 Overload protection OLP

 High efficiency: 96%

 Optical LED indication

 Warranty – 2 years from the production date

 Mounting:

 Mounting strip with adhesive tape

 Mounting screws

Example of use of the DC/DC48250 step up converter.

Schematic diagram of the converter operation.

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DC/DC48250 v.1.0 DC/DC 48V/2,5A Step up DC/DC converter EN** Edition: 2 from 15.01.2016 Supercedes the edition: 1 from 26.08.
PAGE 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.
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1.3. Technical parameters: - Electrical parameters (Table 3) - Mechanical parameters (Table 4) Table 3. The input voltage range (power supply) The output voltage range P module power Energy efficiency Ripple voltage Output current Current consumption by module systems 18V÷28V DC 48V DC +/- 1V 120W max. 94%÷ 96% 150mV p-p 2,5A max. 25 mA max.
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2.2. Installation procedure. 1. Mount the enclosure (cabinet, etc.) and lead cables through cable glands. 2. Mount the DC/DC converter with adhesive tape or mounting screws. 3. Supply DC voltage to the + IN, -IN terminals with correct polarization. 4. Connect the receivers’ cables to the +AUX, -AUX connectors of the terminal block on the module’s board. 5. Connect the device cables (alarm control panel, indicator, LED light, etc.) to the PSU technical output if necessary. 6.