Alfatronix DC/DC CONVERTERS
PowerSelectors

 
 

These products offer a convenient way to use 12, 24, 36 or 48 Vdc equipment from Extra Low Voltage mobile electrical systems of between 12 and 48Vdc. These cool running products use switch mode technology and are assembled using surface mount techniques.

All the PowerSelecter products are CE marked and those suitable for road traffic vehicles are also e marked. They all meet the requirements of FCC Class B.
 
 
  • Secure isolation
  • Cool running
  • Rugged and compact
  • Tamper proof
  • Fast installation

 

 

 

Product Coding
The product code is developed as follows, take PS36i as an example:
PS - PowerSelecter DC/DC voltage converter product.
36 - 36 watts continuous output (12 Vdc output at 3 A).
i - Isolated between input and output (s indicates switchmode, non- isolated).
12-12 - 12VDC nominal input, 12VDC nominal output (actually 13.6VDC).
 

 

Output Voltage
  12 24 36 48
12 PS36i 12-12 - PS36s 12-36 Not
available
PS72i 12-12 PS72s 12-24 PS72s 12-36
PS144i 12-12 PS144s 12-24 PS144s 12-36
PS288i 12-12 PS288s 12-24 PS288s 12-36
24 See the
PowerVerter
range of
ten products		 PS36i 24-24 PS36s 24-36 Not
available
PS72i 24-24 PS72s 24-36
PS144i 24-24 PS144s 24-36
PS288i 24-24 PS288s 24-36
36 PS36s 36-12 PS36s 36-24 PS36i 36-36 Not
available
PS72s 36-12 PS72s 36-24 PS72i 36-36
PS144s 36-12 PS144s 36-24 PS144i 36-36
PS288s 36-12 PS288s 36-24 PS288i 36-36
48 PS36s 48-12 PS36s 48-24 PS36s 48-36 PS36i 48-48
PS72s 48-12 PS72s 48-24 PS72s 48-36 PS72i 48-48
PS144s 48-12 PS144s 48-24 PS144s 48-36 PS144i 48-48
PS288s 48-12 PS288s 48-24 PS288s 48-36 PS288i 48

 

The product code indicates the output power.
The products in yellow  have the suffix i and are isolated products.

To calculate the output current, divide the first number in the product code by the nominal output voltage (12, 24, 36, 48 Vdc)

 
Technical Data

Dimensions
 
Model Size Weight
PS36s 66x87x50mm 256g
PS36i, PS72s 88x87x50mm 318g
PS72i, PS144s 126x87x50mm 455g
PS144i, PS288s 166x87x50mm 610g
PS288i 216x87x50mm 750g


Common Characteristics
 
Input Voltage Range 12 Vdc, 24 Vdc, 36 Vdc, or 48 Vdc, +/-30%
Transient Voltage Protection Meets ISO7637-2 International Standard for 24Vdc Commercial Vehicles
Electro Static Voltage Protection Meets ISO10605, ISO14892, >8kV contact, 15kV discharge
Output Voltage Options 13.6 Vdc, 27.2 Vdc, 40.8 Vdc or 54.4 Vdc. Worst case limits are +15% and -20%
Output Noise <50mV pk-pk at continuous load. Meets CISPR25 and VDE0879-3
Intermittent Output power Continuous rating +25%, taken for a maximum of 2 minutes followed by 8 minutes rest
Off Load Current <50mA
Power Conversion Efficiency Typically: 85% for isolated units, 90% for non-isolated units
Isolation >400Vrms between input, output and case, on isolated products only
Mean Time Between Failures >162 years (HRD4)
Operating Temperature -25°C to +30°C to meet this specification table+30°C to +80°C de-rate linearly to 0A
Storage Temperature -25°C to 100°C
Operating Humidity 95% max, non condensing
Casework Anodised Aluminium, Glass Filled PolycarbonateDust water and impact resistance IP533
Connections Four 6.3mm push-on connectors
Output Indicator Red LED adjacent to the output terminals
Mounting Method Click 'n Fit Mounting clip, fitted separately using three hole fixing
Safe Area Protection  
  Over Current Limited by current sensing circuit
Over Heat Limited by temperature sensing circuit
Transients Protected by filters and rugged component selection
Catastrophic failure Protected by internal input and output fuses
Tested to ISO7637, ISO10605, ISO14892, ISO14893, ISO11451, ISO11452, CISPR 25, VDE0879-3, EN60945 Annex A
Markings All are "CE" marked, where appropriate they are "e" marked t

 

 

Additional information
Cool Power Solutions Oy