ATA6834-DK Atmel, ATA6834-DK Datasheet - Page 3

• Manufacturer Part Number: ATA6834-DK
• Description: BOARD BLDC MOTOR CTRL ATA6833/34
• Manufacturer: Atmel
• Type: MOSFET & Power Driverr

Specifications of ATA6834-DK

• Main Purpose: Power Management, Motor Control
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6833 / ATA6834, ATmega32M1
• Primary Attributes: 3-Ph BLDC, IC with FET Driver, LIN Transceiver, Volt Regulator, Watchdog
• Secondary Attributes: LCD with Touch Screen on MCU Controller Board
• Product: Power Management Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

BLDC Motor Control Kit with ATA6833/ATA6834
The BLDC control unit consists of two integrated circuits: Microcontroller ATmega32M1 and
LIN gate driver System - Basis - Chip ATA6833/ATA6834
(Figure
2-1).
The SBC ATA6833/ATA6834 includes a Voltage Regulator, Window Watchdog, LIN Trans-
ceiver and Gate Driver for N-channel MOSFETs. The Voltage Regulator provides the ECU
with digital voltage supply, either 5V or 3.3V depending on a jumper setting. The window
watchdog is mandatory for lots of automotive applications. It can be deactivated via a jumper,
which is useful for debugging. The LIN transceiver enables the communication with the auto-
motive environment.
The ATA6833/ATA6834 works with a two-stage charge pump to run down to very low battery
supply voltages. The charge pump facilitates low-drop reverse-voltage protection with an
N-channel MOSFET.
The microcontroller ATmega32M1 on the controller board communicates with the user inter-
face. A back-illuminated LCD display with touch panel is also implemented on the controller
board.
The loop between motor movement and microcontroller is achieved using Hall sensors. The
commutation is done by the microcontroller ATmega32M1, which generates the digital output
signals to control the coils. The microcontroller also handles different commutation shapes as
well as the diagnostic outputs of the ATA6833/ATA6834.
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