Toshiba’s New Simulation Technology for Model-Based Development Reduces Automotive Semiconductor Verification Times by About 90%


TOKYO – (COMMERCIAL THREAD) – Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has developed model-based development simulation (MBD) technology that reduces automotive semiconductor verification times by approximately 90%.[1] The technology allows automotive equipment developers to quickly evaluate designs using Toshiba automotive semiconductors, helping to shorten development times.

As electric vehicles gain popularity and advanced driver assistance systems become the norm, automotive equipment becomes more advanced and complicated. Model-Based Development, a development methodology that uses software to simulate models and evaluate real-time performance, helps product developers refine complex design processes. In the automotive industry, MBD contributes to development advancements by simultaneously advancing design and verification before the production of prototypes.

MBD separates the functions into blocks and checks the total behavior of the vehicle by connecting each block. Detailed simulation models that include the behavior of semiconductors in individual blocks are needed to verify heat and electromagnetic interference (EMI), parameters essential for evaluating the performance of automotive equipment. However, as models become more detailed and precise, verification times lengthen.

Toshiba has extensively reviewed its current automotive equipment assessment and verification technology. Subsystems such as electric power steering include semiconductor-based electronic circuitry that operates in microseconds as well as mechanical components, gears, and shafts, which operate in milliseconds. Toshiba’s current technology simulates electronic circuits and mechanical components at the same time, on a microsecond basis, but this results in a large number of unnecessary and time-consuming calculations in the mechanical components. The technology is also complicated because it adopts the SPICE (Simulation Program with Integrated Circuit Emphasis) model which defines more than 100 parameters for the simulation of semiconductor behavior.

Toshiba’s new modeling technology, “Accu-ROMMT», Calculates electronic circuits and mechanical components separately. It first checks the mechanical components, then simplifies the model for the mechanical components, and finally checks the entire system including its electrical circuits. This approach eliminates unnecessary calculations. When evaluating electrical circuits, the model automatically generates an Analog Mixed Signal-Hardware Description Language (VHDL-AMS) very high-speed integrated circuit model from the SPICE model. The VHDL-AMS model allows the verification range to be limited to essential parameters, such as heat and EMI noise, thereby reducing verification time. For example, checking a power steering system with current Toshiba technology takes 32 hours 51 minutes, but it drops to 3 hours 27 minutes[1] with new technology.

Toshiba will use the new technology to promote the development of high heat dissipation, low noise automotive semiconductors, and to provide customers with a development environment that facilitates the use of Toshiba products. In addition to automotive applications, Toshiba will use the new semiconductor technology for other applications, such as industrial equipment and household appliances.


[1] Verification time for simulating three-phase inverter circuits in an automotive electric power steering system during a right-hand turn lasting six seconds.

* Accu-ROM ™ is a trademark of Toshiba Electronic Device & Storage Corporation.

* All other company names, product names and service names may be trademarks of their respective companies.

About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation, a leading provider of advanced semiconductor and storage solutions, leverages more than half a century of experience and innovation to provide customers and business partners discrete semiconductors, system LSIs and exceptional HDD products.

The company’s 22,000 employees around the world share a determination to maximize product value and promote close collaboration with customers in the co-creation of value and new markets. With annual sales now exceeding 710 billion yen (US $ 6.5 billion), Toshiba Electronic Devices & Storage Corporation looks forward to building and contributing to a better future for people everywhere.

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