Many  modular  low-power  DC/DCs  on  the  market  have  been  designed  to  suit  manual,  low-cost assembly,  which  only  suits  the  simplest  of  circuits  with  their  inherent  performance  limitations. RECOM has broken this mold with the launch of drop-in upgrades to several of their popular product ranges,  achieving  significant  performance  improvements  using  advanced  circuit  and  automation techniques, but without a price premium. Some products will be lower cost than previous versions for volume purchases. 

Designated with a ‘K’ suffix, the new products include the already-announced R-78K-xx series which are drop-in replacements for three-terminal linear regulators, but now with a wider input range and more output voltage options. The 0.5A and 1A versions have smaller case sizes, lower weight, and better efficiency. 

Another introduction is the new RKK series, an upgrade to the existing RKE and RFMM series, a 1W  isolated  SIP-7  DC/DC.  The  RKK  now  has  lower  EMI,  operates  to  105°C  with  no  derating, continuous short-circuit protection, and higher efficiency than the RKE series, maintained to light loads. Elimination of potting saves cost and weight, nearly halving to just 1.7g, adding to its ‘green’ credentials. Versions with a fully regulated output and the same performance enhancements are available as the new RYK series as upgrades to the existing RY series. 

The popular regulated 4:1 input RSO product has also been upgraded to the RSOK series which now  features  3kV/1min  agency-rated  ‘basic’  grade  isolation  compared  with  2kVDC/1  second ‘functional’ grade, lower isolation capacitance at 50pF, higher operating temperature to 88°C without derating, and no minimum load requirements. 

Similar improvements have been made to the RSE series with the new RSK-RUW which features 3kVDC/1 min isolation, up from 2kVDC/1 second, 88.5% compared with 79% efficiency, 8:1 input range compared with 4:1, lower isolation capacitance at 50pF and operation to 85°C without derating, up 10°C from the RSE series.

 Another significant new product is the 3W SIP8 RS3K-Z series upgrading the RS3E series. The -K version has a 4:1 input range and 3kV ‘basic’ isolation compared with 2:1 input and 3kV ‘functional’ isolation for the -E series. The RS3K-Z also has a wider operating temperature range to +80°C without derating, lower isolation capacitance, and better efficiency. 

New techniques used in the -K upgrades include the elimination of potting, synchronous rectification for high efficiency and planar transformers for automated assembly with high repeatability. 

Matthew Dauterive, MSc., DC/DC Product Manager of RECOM comments, “Low power DC/DCs are finally able to utilize latest circuit techniques for advanced performance without a cost penalty, using our advanced and flexible manufacturing automation.” 

Parts include a three-year warranty and samples and OEM pricing are available from all authorized distributors or directly from RECOM. 

For more information, please visit www.recom-power.com

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