OREANDA-NEWS. Fujitsu Semiconductor Limited today announced the release of a new 32-bit microcontroller for automotive applications, MB91F552, which is optimal for use in power supply system for batteries as well as power transmission circuitry in hybrid electric vehicles (HEV). The new product will be made available in sample quantities beginning May 31, 2013.

In addition to incorporating optimal functions for control of a digital power supply system, such as a 200MHz PWM module, onto a single microcontroller chip, MB91F552 also supports peak current mode control and substantially contributes to power supply stability and lower system costs.

With HEVs and other electric vehicles that have gained in popularity in recent years, electric power generated during travel is stored in a battery, and this power is then supplied to motors, audio systems, lights, and other on-board electrical components, in addition to being used to charge the vehicle's auxiliary battery. Currently, in order to supply this stored power to the motor or on-board electrical components, a power supply control system—which manages power conversion circuitry, such as DC/DC converters and DC/AC inverters—is necessary. There is also demand for power supply control ICs that enable stable voltage levels while supporting fluctuations in battery voltage and load fluctuations in the components to which power is being supplied.