Allegro MicroSystems AMT49100 and AMT49101 Three-Phase MOSFET Drivers control MOSFETs connected in a 3-phase bridge arrangement and are designed for 48V automotive power applications. These drivers feature a fixed-frequency buck converter that provides a regulated gate drive and bootstrap charge voltage over the 10V to 80V supply voltage range. The AMT49100 and AMT49101 drivers provide full control over all six power MOSFETs in the 3-phase bridge. This allows the motors to be driven with block communication or sinusoidal excitation. These MOSFET drivers feature cross-conduction protection with adjustable dead time, SPI-compatible serial interface, extensive programmable diagnostics, three programmable current sense amplifiers, and programmable control sense amplifiers.
