Analog Simulation - ATA6847L and ATA6847P

3-Phase Brushless DC (BLDC) Motor Gate Driver with LIN Transceiver

The ATA6847/ATA6847L/ATA6847P are Three-Phase Brushless Motor Gate Driver System Basis Chips (SBC) for brushless motor control, designed using advanced SOI technology. In combination with a microcontroller and six discrete power MOSFETs, the SBC forms a brushless DC motor control unit. The gate driver units (GDU) are controlled independently through six dedicated parallel inputs. Charge pumps for low and high-side gate drive allow duty cycle operations from 0% to 100%. In addition, the SBC provides 5V and 3.3V low dropout voltage regulators, current-sensing operational amplifiers, an integrated Back-EMF (BEMF in schematics) detection module and a window watchdog. The microcontroller controls the ATA6847/ATA6847L/ATA6847P using an SPI interface.