Product Releases

Hybrid regulated ratio quarter-brick delivers up to 600 W in powering advanced telecoms applications

Tue, 05/27/2014 - 8:45am


600-W quarter brickEricsson (Stockholm, Sweden) has introduced the third version of its high-power-density quarter-brick power module based on the company’s Hybrid Regulated Ratio (HRR) topology. The PKM4613NH is designed to power applications that require stable voltage and offers available power up to 600 W across a wide input voltage range of 36 V to 75 V and an operating temperature range of –30°C to +90°C. Combining voltage and duty-cycle regulation, the HRR technology makes it possible to operate high-power conversion across a wide input voltage range, while keeping power losses low, resulting in an efficiency power conversion of up to 96 percent, according to the company. The PKM4613NH comes in an industry-standard quarter-brick footprint and is designed to power ICT (Information and Communication Technologies) applications. The new DC/DC converter:

  • Delivers 600 W over the 42-V to 75-V range.
  • Matches a large variety of system bus voltages that are powered by multi-cell batteries or rectifiers commonly used in the ICT industry.
  • Complies with the European Standard ETSI EN 300 132-2 for both 48-V and 60-V systems.

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