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The ATA6833 and ATA6834 are system basis chips for three-phase brushless DCmotor controllers designed in Atmel®’s state-of-the-art 0.8 μm SOI technologySMART-I.S.™1. In combinaTIon with a microcontroller and six discrete power MOSFETs,the system basis chip forms a BLDC motor control unit for automoTIveapplicaTIons. In addiTIon, the circuits provide a 3.3V/5V linear regulator and a windowwatchdog.The circuit includes various control and protection functions like overvoltage and overtemperatureprotection, short circuit detection, and undervoltage management.Thanks to these function blocks, the driver fulfils a maximum of safety requirementsand offers a high integration level to save cost and space in various applications. Thetarget applications are most suitable for the automotive market due to the robust technologyand the high qualification level. ATA6834, in particular, is designed forapplications in a high-temperature environment.
