Motor Control Circuit Technology for Automotive Microcontrollers

The developed technology is an Intelligent Motor Timer System (IMTS), a dedicated circuit block that can be integrated into automotive microcontrollers (MCUs) for next-generation electric vehicles (EVs) and hybrid electric vehicles (HEVs). It performs field-oriented-control operations, which are essential to EV motor control, in a mere 0.8 microseconds (µs), the world’s fastest rate, which is less than 1/10 the operation processing time of software implementation on a CPU running at the same operating frequency. This contributes to the realization of next-generation high-speed EV motors with excellent energy efficiency and inverter systems with high-speed switching performance to drive them.  

Furthermore, the unique circuit also enables functional safety support required for the automotive powertrain field.

With the increasingly stricter fuel efficiency requirements in the recent years, EVs, HEVs, and plug-in hybrid electric vehicles (PHEVs) have come to account for an increasing share of the total number of vehicles produced. To increase the range of such motor-driven vehicles, it is necessary to boost the energy efficiency of motor control.

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