Silicon Carbide (SiC) Power Electronics Module (PEM)

Liquid-Cooled SiC Power Electronic Modules are the Latest in Solid-State Power Conversion Technology


Leonardo DRS Naval Power Systems

+1 414 875 2900


The Leonardo DRS series of liquid-cooled Power Electronic Modules (PEMs) advances solid-state conversion technology for improved power density, flexibility and maintainability. Since the development of our first baseline PEM in 2005 we have worked continually to improve capability while meeting stringent power quality and acoustic requirements.

The DRS 3-phase 4th Generation PEM at 300kW, offers 60% greater power density over the 3rd generation design while enabling system level volume, weight, and cost reduction via ten times greater switching frequency operation.  Its development is based on our extensive experience in naval power conversion systems for DC/AC and DC/DC converter applications and the implementation of latest technology Silicon Carbide Power Electronics.

Integrating PEMs as a system provides advantage for system stability, fault handling, and redundant control. Potential applications for DRS PEM power conversion technology include VFD’s, soft starters, frequency converters, point of use power conversion (AC/DC, DC/AC, DC/DC, AC/AC), propulsion drives or power conversion based power systems.


  • High Efficiency >98% Fault Tolerance 
  • Excellent Power Quality High Switching Frequency (>50kHz), Enables System Volume Reduction
  • High Power Density
  • Scalable Module Enables Realization of Multi MW Converters 
  • Liquid or Air Cooled
  • 19” EIA rackmount enclosure in modular enclosure

Technical Information

  • Power Rating – 250kW (Liquid Cooled), 100kW (Air Cooled)
  • Current Rating – 250A per Pole
  • Poles – 3
  • DC Bus Voltage - 1,000VDC
  • AC Voltage – 440/690VAC
  • Power Electronics Type – Silicon Carbide MOSFETs
  • Power Electronics Switching Frequency – 50kHz
  • Overall Dimensions – 18” Depth x 5.2” Height x 16.35” Width
  • Volume – 1530 in ^3
  • Weight 50 lbs.

Military Standards Compliance

  • MIL-S-901, Grade A Shock
  • MIL-STD-167-1 Vibration
  • MIL-STD-1399 Section 300B Power Quality
  • MIL-PRF-32272A IPMC
  • MIL-STD-741-1 Airborne Noise
  • MIL-STD-741-2 Structure-borne Noise, Type III
  • DoD-STD-1399-70-1 Magnetic DC Field
  • DoD Directive 8500.01/02 Information Assurance Capable
sic pems datasheet

The SiC PEM power conversion technology is ideal for VFD’s, soft starters, frequency converters, point of use power conversion propulsion drives or power conversion based power systems.

Download the data sheet