A3931 Datasheet - Allegro MicroSystems

A3931 Automotive 3-Phase BLDC Controller and MOSFET Driver

The A3930 and A3931 are three-phase brushless DC (BLDC) motor controllers for use with N-channel external power MOSFETs. They incorporate much of the circuitry required to design a cost-effective three-phase motor drive system and have been specifically designed for automotive applications. A key au.

A3931 Features

* ▪ High current three-phase gate drive for N-channel MOSFETs ▪ Synchronous rectification ▪ Cross-conduction protection ▪ Charge pump and top-off charge pump for 100% PWM ▪ Integrated commutation decoder logic ▪ Operation over 5.5 to 50 V supply voltage range ▪ Extensive diagnostics output ▪ Provides

A3931 Datasheet (948.21 KB)