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March 2024 – Power Electronics for UPS Systems

 Introducing Semikron’s power electronics for UPS systems, flexible topologies ideal for uninterruptible power supplies

Power Electronics for UPS Systems

Semikron power modules feature flexible topologies equipped with the latest IGBT and diode chips ensure maximum conversion efficiency for double conversion UPS systems.

The availability of infrastructure systems strongly depends on reliable power supply, irrespective of whether these systems are servers and cloud storage systems, critical traffic control or hospital services. Uninterruptible power supplies (UPS) ensure continuous operation of these critical systems.


Power Electronics for UPS Systems


Power Electronics for UPS Systems


Low/Medium-Power Modules

SEMITOP 1st Generation and SEMITOP E1/E2

  • Optimised chipsets for any power factor
  • NPC/TNPC and double boost topologies
  • Supporting up to 40kVA



  • NPC/TNPC and half-bridge topologies
  • Quick and easy mounting with one or two screws
  • All modules on one PCB
  • For ultra compact designs: 3-phase TNPC in one module (1200V/40A)
  • MiniSKiiP MLI and symmetrical boost with 300A and TrenchStop S5 IGBTs for 100kVA modular UPS systems
  • MiniSKiiP Dual Split MLI up to 150Kva in ultra compact designs


Medium/High-Power Modules


  • SEMITRANS 5 with single NPC/TNPC legs in one 62mm housing
  • SEMITRANS 3 with flexible half-bridge design: up to 3 half-bridge modules in TNPC or ANPC topology
  • Buck-boost converters and double boost converters


SKiM 4

  • SEMITRANS 5 with single NPC/TNPC legs in one 62mm housing
  • NPC and TNPC topologies up to 200kVA



  • 17mm- high industry standard power module
  • Benchmark switching performance thanks to optimised internal design
  • Broadest portfolio of NPC, TNPC and double boost power modules on the market


Power Electronic Stacks

  • Fast time-to-market with ready-to-use power stacks
  • Customised designs for individual customer applications
  • Including Semikron drivers with ASIC chipset for maximum reliability
  • UL ready


Application example:

  • 500kVA 3-ohase TNPC stack
  • 4 x SEMiX 5 per phase in parallel


MiniSKiiP MLI modules for UPS Systems

  • Single leg MLI module based on TrenchStop 5 IGBTs
  • Single leg symmetrical boost for input and battery charging
  • Supporting 100kva UPS system in 19” frames
  • For higher power up to 150kva MiniSKiiP Split MLI with 99% peak efficiency at full load


GD Rectifiers is an official distributor for Semikron, guaranteeing the best possible prices and lead times on a comprehensive range of semiconductors, heat sinks and power assemblies.


For further information on GD Rectifiers’ range of Semikron products, please contact us today on: 01444 243 452 or email:

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