Dc-dc converters with very wide input-voltage range for electric mobility applications

May 15, 2025

The RMOD range of isolated dc-dc converter modules from RECOM offer robust performance in off-highway vehicles powered by a battery, and provide compliance with standards governing exposure to shock and vibration.

RECOM supplies the RMOD range of dc-dc converter modules, which combine high efficiency and excellent thermal performance with the ruggedness required for use in off-highway electric vehicles (EVs).  

 

The range of power output values available in the RMOD range stretches from 300 W in the RMOD300-UW, to 600 W in the RMOD600-24-SW and RMOD600-80-13SEW.  

 

The newest members of the RMOD family are the RMOD300-UW and RMOD360-UW. Both dc-dc converters are supplied in a baseplate-cooled package measuring 190 mm x 76 mm x 44 mm. The input-voltage range is 18 V to 106 V dc, which means that the converters can handle EV batteries with a nominal voltage spanning a range from 24 V up to 90 V. The 300 W-rated RMOD300-UW is available with fully regulated single outputs of 12.2 V, 13.7 V, or 24.5V dc, while the 360 W-rated RMD360-UW has a single 24.5 V dc output. 

 

Both dc-dc converters feature a polycarbonate housing and aluminum baseplate with IP67 sealing for the electronic components, and IP20 rating for the product as a whole, in pollution degree 2 environments up to 5,000 m altitude, allowing for mounting on any part of a vehicle chassis. RMOD converters are available with alternative connectors, providing for an IP67 overall product rating. 

 

Isolation is rated at 2,250 V dc input-to-output, and 550 V dc output-to-baseplate according to IEC/EN/UL/CSA 62368-1. The converters comply with the provisions of the IEC 61000 EMI standards. Parts in the modules are qualified for shock and vibration according to IEC 60068-2.  

Features

  • Ambient-temperature range: -40°C to 75°C with derating 
  • Up to 740,000-hours MTBF  
  • Protection features: 
  • Input reverse polarity protection 
  • Under-voltage lockout 
  • Over-temperature protection 
  • Output over-voltage protection 
  • Over-current and short-circuit protection 
  • 90% efficiency 
  • On/off control 

Applications

  • Off-highway electric vehicles: 
  • Forklifts 
  • Golf carts 
  • Airport luggage and people movers 
  • Electric construction vehicles 
  • Automated ground vehicles 
RECOM — RMOD Series of DC-DC Converters

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