Hybrid & Electric Vehicle Products

Delphi Power Box

Delphi's Power Box is a self-contained hybrid propulsion system that combines electronic components and a lithium-ion battery to simplify electrification and assembly of mild hybrid vehicles. A drop-in solution that typically fits behind the rear seat, the system is capable of both permanent magnet and induction machine control and can be applied across multiple vehicle platforms and powertrains.


  • Building block technologies increase flexibility while helping to reduce cost and complexity
  • Complete system integrated in a single housing
    • Interior mount; typically fits behind rear seat
    • Simplifies installation
  • Simplifies hybridization of non-hybrid vehicle
  • Improves fuel economy by 10-20%
  • External manual disconnect helps facilitate safe, easy service and maintenance
  • Applicable across multiple vehicle platforms and powertrain configurations
  • Proprietary battery management algorithms contribute to longer cell life and increased battery safety
  • Functionality
  • Converts high-voltage DC to three-phase power for traction motor drive
  • Converts high-voltage DC to low-voltage DC power for conventional vehicle accessory loads
  • Converts braking energy to charge battery
  • Battery management controller enables state-of-charge and state-of-health calculations, cell balancing and thermal controls

Single-box hybrid propulsion system includes:

  • Hybrid control unit
  • Motor controller
  • Traction inverter
  • DC / DC converter
  • 120 V Li-ion Battery pack
  • Bus distribution center
  • Battery management controller
  • High-voltage safety interlocks
  • Thermal management subsystems
  • System-ready software for motor and battery control


  • In production


  • Air-cooled
  • 80 to 134Vdc input operating voltage
  • -30 to +70°C ambient operation
DC / AC Inverter
  • 120V
  • Three-phase AC motor
  • 20kW peak, vector-controlled
  • Up to 150 amps continuous phase current, with sufficient cooling
  • Peak phase current in excess of 300 amps
DC / DC Converter
  • 1.6kW isolated 120 Vdc to 14 Vdc unidirectional
  • 12.5 – 15.5 Vdc output voltage range
  • Main processor
    • 32-bit
    • 128 MHz Freescale Viper™
    • 3Mbyte flash, 128Kbyte SRAM
  • Motor control processor
    • 128 MHz Freescale Taipan™
    • 2Mbyte flash, 64Kbyte SRAM

Viper and Taipan are trademarks of Freescale Semiconductor, Inc.