By Frank Dehmelt and Mahmoud Harmouch, Texas Instruments
This article describes what start-stop is and the prerequisites for an automotive start-stop system, including its implementation and benefits.
The fuel savings and CO2 reductions are in the five to 10 percent range. With fuel prices rising, taxes increasing for high carbon-oxide emissions, and governmental requirements for vehicles with lower and lower emissions, various measures are needed to increase efficiency and lower emissions.
Infineon Technologies AG has introduced an innovative package technology that provides high-current capability and high efficiency for demanding automotive electronics applications, including electric and hybrid vehicles.
The new TO package is compliant with JEDEC standard H-PSOF (Heatsink Plastic Small Outline Flat lead). The first available products using the H-PSOF package technology are 40V OptiMOS™ T2 power transistors offering up to 300A current capability and R DS(on) values of 0.76mΩ. Infineon describes those specifications as a new milestone.
August 4, 2009 – ANSYS, Inc. said an ultracapacitor components library from Maxwell Technologies is available at www.ansoft.com/modeldb/ for use in ANSYS Simplorer® technology. The components library, which includes the latest innovations for Maxwell BOOSTCAP® ultracapacitor cells and multi-cell modules, makes it easier for automotive power engineers developing hybrid vehicles to use ultracapacitor energy-storage device models in their simulations.
John M. Miller, Maxwell Technologies vice president, systems, applications & integration, said his company selected Simplorer software based on the strength of its simulation capabilities, the IEEE standard modeling language for analog-mixed signal systems, and ANSYS’ focus on high-performance, multi-domain system simulation solutions.