A3931 Overview
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 automotive requirement is functionality over a wide input supply range.
A3931 Key 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 mutation decoder logic
- Operation over 5.5 to 50 V supply voltage range
- Extensive diagnostics output
- Provides +5 V Hall sensor power
- Low-current sleep mode