Introducing CUI's Solus® Power Topology

CUI Inc's patented Solus Power Topology provides advantages in isolated and non-isolated dc-dc converter designs through a significant reduction in switching and conductivity losses. Very simply, the Solus Topology combines a single-ended primary-inductor converter (SEPIC) with the conventional buck topology to form the SEPIC-fed buck converter. Lower voltage and current stresses in the topology coupled with an inherent GCE (gate charge extraction) process allows the new topology to reduce switching turn-on losses by 75% and switching turn-off losses by 99% on the control FET when compared to a conventional buck converter. Total efficiency is further increased by distributing the energy delivery into multiple paths, reducing circuit conduction losses by nearly 50%. The rich feature set of the Solus Topology is allowing CUI to accelerate the performance trend trajectories for the big-four power conversion needs in their latest designs: higher power density, higher efficiency for “greener” systems, faster transient response, and lower EMI.

Learn more about the technology behind Solus 

Reduction in Switching Losses


Reduction in Conductivity Losses


Advantages of Solus Topology

  • Greater Efficiency
  • Higher Power Density
  • Reduced EMI (electro-magnetic interference)
  • Reduced Input Capacitor Requirements
  • Reduced Switching Loss
  • Reduced Conduction Losses and DCR losses
  • Faster Transient Response (up to 4X as fast)

Designs Incorporating Solus Topology

NDM3Z-60 Series

The NDM3Z-60 family is a module that delivers unrivaled efficiency, current density, and transient response; performance benchmarks that are becoming an imperative as the challenges of powering today's processors continues to grow. Learn More 

NQBS-720N Series

The NQBS dc-dc converter series aims to address the trends of rising power and efficiency demands in distributed bus architecture and high power dc-dc applications. Learn More