Automotive electronics portfolio on show in Paris

At the International Automotive Electronics Congress in Paris in September, Allegro MicroSystems Europe will feature a number of leading-edge developments.

At the International Automotive Electronics Congress in Paris in September, Allegro MicroSystems Europe will feature a number of leading-edge developments in transmission sensing, cam and crank sensing, current sensing and motor-driver integrated circuits.

New developments in transmission sensing include Hall-effect gear-tooth sensor modules featuring new algorithms for vibration detection and compensation as well as features such as automatic offset adjustment, running-mode automatic gain control and a "burp" mode which centres the signal at startup.

These new devices complement the recently introduced ATS643 and ATS647 gear-tooth sensor modules.

Also featured is Allegro's ACS750 family of fully integrated current sensors, offering high-power current sensing at current ratings of up to 100A from a very compact package.

The unique current sensing assembly includes a high current conductor, ferrite core, and an optimised monolithic Hall IC in the smallest integrated current sensing package in the industry.

The magnetic field, created by the current passing through the ultra-low-resistance power lead frame, is concentrated by a ferrite core and measured by the sensing element of the Hall IC.

Factory programming of the Hall IC provides high accuracy and linearity over temperature, and the optimised package design achieves high dielectric isolation.

A technical paper to be presented at the congress features a new high-temperature gate controller integrated circuit for automotive fractional horsepower motors in "under-bonnet" applications.

Allegro's new Power Management Division will also show a multiple-output automotive voltage regulator IC.

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