Microchip Technology Inc

ATA6844

In Production

System basis chip for three-phase brushless DC motor controllers designed in the Microchip 0.18-µm SOI technology SMART-I.S.™. The chip forms a BLDC motor control unit for automotive applications in combination with a microcontroller and six discrete power MOSFETs. Works in extended supply voltage range from 5.25V up to 32V. It features a Tjunction of up to 200°C. Its circuits provide a 3.3V/5V linear regulator and a window watchdog. It includes various control and protection functions like overvoltage and over-temperature protection, adjustable short circuit detection, undervoltage management and coast function. Its drivers fulfill maximum safety requirements and offer a high integration level to save cost and space.

 

    Features

        • Broad operation voltage range from 5.25V to 32V
        • ATA6844 extended temperature range TJ = 200°C
        • Direct driving of six external NMOS transistors with a maximum switching frequency of 50kHz
        • Integrated charge pump to provide gate voltages for high-side drivers and to supply the gate of the external battery reverse protection NMOS
        • Built-in 5V/3.3V voltage regulator with current limitation
        • Reset signal for the microcontroller
        • Sleep Mode with supply current of typically < 45μA
        • Wake-up via LIN bus or high voltage input
        • Programmable window watchdog
        • Battery overvoltage protection and battery under voltage management
        • Overtemperature warning and protection (shutdown)
        • Jump start compatible
        • LIN transceiver conformal to LIN 2.1 and SAEJ2602-2 with outstanding EMC and ESD performance
        • QFN48 package 7mm x 7m
    Parameter Name
    Value
    Operating Voltage Range (V)
    5.5 to 32
    Output
    Gate Driver
    Max. Ron per Output (?)
    20
    Motor Control Methods
    Direct PWM Input
    Shutdown Protection
    Short Circuit, Overtemperature, Over/Under Voltage, Chargepump Fail, Watchdog
    Ambient Temperature Range (°C)
    -40 to 150
    Voltage Regulators
    1
    Voltage Regulator Current (mA)
    100
    Integrated LIN Transceiver
    Yes
    Packages
    48/VQFN
    Documentation
    Data Sheets
    02/01/2015
    978KB
      Application Notes
     
     
     
    AppNote
    04/01/2015
    198KB
    AppNote
    02/01/2015
    190KB
    AppNote
    03/01/2015
    1663KB
      Brochures
     
     
     
    Brochures
    08/01/2015
    3116KB
    Brochures
    11/01/2013
    5255KB
      Quick Start Guides
     
     
     
    Quick Start Guides
    10/01/2013
    503KB
    Quick Start Guides
    03/01/2012
    669KB
    Quick Start Guides
    10/01/2010
    948KB
    Development Tools
    • Demo & Eval Boards
    • ATA6844-DK ( ATA6844-DK )

      ATA6844-DK

      Intention of the kit is demonstrating the features of the ATA6843/44 System Basis Chip BLDC Gate Driver. Motor position feedback operates with Back-Electromotive-Force (Back-EMF). Motor control microcontroller is ATmega32M1. For monitoring and evaluating purposes is an USB interface on board.

    • ATA6832-DK ( ATA6832-DK )

      ATA6832-DK

      The development board contains an triple half bridge driver (ATA6832), ATmega88 microcontroller, and ATA6625 LIN SBC as a voltage regulator. Only high-temperature components populate this board. The board also includes a BLDC motor control kit with BLDC motor and a power supply cable with banana plugs. The BLDC motor control is fully integrated from the signal generation to the full BLDC motor...

    • ATA6823-DK ( ATA6823-DK )

      ATA6823-DK

      The development kit contains a main board with an H-bridge gate driver (ATA6823), external FETs, and DC motor. The controller board is populated with an ATmega88 microcontroller and LCD display.