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          Redefining automotive 48V power delivery
          Modular Solutions Decentralized Architecture

          Today’s challenges with electrification

          The development of pure electric, mild hybrid (MHEV) and plug-in hybrid (PHEV) vehicles with 48V based power delivery networks (PDN) are rapidly expanding.

          Cars and SUVs

          Cars and SUVs

          Light duty trucks

          Light duty trucks

          Trucks and busses

          Trucks and busses

          Sports car

          High-end sports cars

          Plug-in hybrid

          Electric vehicles

          EV motorcycles

          EV motorcycles

          While these new vehicles solve the CO2 emissions challenge and offer significant performance enhancements and new features, their electrification presents new power delivery challenges for OEM and Tier 1 engineers. These challenges are common to the development of all new electrified vehicle platforms:

          • Managing new 48V and Legacy 12V loads 
          • Higher voltage, 800V and 400V conversion and regulation
          • Designing higher power, low weight and small DC-DC converters 
          • Adding innovative technologies from new suppliers 
          • Hiring experienced power system engineering resources 

          Modular power solutions

          Modular power solutions

          Vicor enables the most advanced vehicles today with a modular approach to power providing converters with a high level of integration, advanced switching topologies and thermally adept packaging. Modular power replaces the larger, heavier discrete solutions that are present in so many vehicles today. The Vicor power modules enable an EV/HEV to be lighter, faster and/or travel farther.

          Vicor ChiPs: five components serve 300 possible combinations

          These advanced and innovative 48V modular power conversion and regulation solutions simplify complex power delivery challenges, increasing performance, productivity and time to market. 

            

          Regulated DC-DC converters

          DCM9223

          High voltage DCM

          Isolated regulated

          2+kW

          400V to 48V 

          92 x 23 x 7mm

          DCM9223

          Low voltage DCM

          Isolated regulated

          2+kW

          48V to 12V

          92 x 23 x 7mm

          DCM3717

          Low voltage DCM

          Non-isolated regulated

          1kW

          48V to 12V

          37 x 17 x 7mm

          Fixed ratio DC-DC converters 

          BCM6135

          High voltage BCM

          Isolated 

          2.5kW

          800V to 48V and 400V to 48V

          61 x 35 x 7mm

          NBM2317

          NBM

          Non-isolated and bidirectional

          1kW

          48V to 12V and 12V to 48V

          23 x 17 x 7mm

          The benefits of modular power

          The benefits of modular power

          Lighter Weight

          Lighter weight vehicles

          Faster

          Faster time to SOP

          Design efficiency

          Design efficiency

          Modular

          Reuse of modules

          Modular power enables a high-performance decentralized architecture

          Diagram of automotive centralized architecture
          Diagram of automotive decentralized architecture

          The benefits of moving from a large centralized DC-DC converter to decentralized 48V to 12V power distribution architecture are numerous:

          • Maximize 48V power delivery to save cost and weight by downsizing with 48V cabling and connectors
          • Packaging density and flexibility
          • FuSa true power redundancy
          • Reduce thermal management challenges by distributing the power loss among the DC-DC converters

          Decentralized architecture reduces thermal management challenges

          Centralized: 180W of power loss

          Centralized power loss

          Standard DC-DC converter at 94% efficiency

          Decentralized: 15W of power loss

          Decentralized power loss

          Vicor high-efficiency DC-DC converter module at 98% efficiency

          Decentralized architecture with ultra-high voltage batteries

          Decentralized power with an 800V battery

          High-density, high-efficiency fixed ratio converters used to step down high voltage to 48V

          Many high-performance pure electric vehicles are adding 800V batteries to enable the higher power levels that their vehicle powertrains are now requiring. Converting from 800V to 48V at levels of >20kW with traditional converter topologies results in a bulky and heavy DC-DC converter due to the wide input to output voltage ratio. By using Vicor fixed ratio converter modules that operate at high switching frequencies, power densities of 2.6kW/in3 and efficiencies of 98% can be achieved, significantly reducing the size of the converter.

          Modular power solutions simplify decentralized architectures

          High voltage

          Manage high voltage with fixed ratio converters

          High density

          Highest density at highest efficiency

          48V

          Maximize 48V PDN with power dense modules at the point of load

          Modular

          Modular components are scalable, flexible, easy to reuse for new applications or changing electrical environments

          Implementing decentralized 48V power distribution architectures with modular power components greatly simplifies the design challenge. Modular components from Vicor are inherently more scalable and flexible due to their high density and efficiency. Components can be easily paralleled and with only a few components, high-performance power delivery systems from a few hundred watts too many kilowatts can be created.

          48V automotive powerchain

          Resources

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          Please contact me about Vicor automotive solutions.

          Please contact me about Vicor automotive solutions.

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