Atmel's Brushless Motor Driver ICs Open Door to Automotive Under-the-Hood Designs

DETROIT, Oct. 20 /PRNewswire/ -- Convergence Show -- Atmel(R) Corporation (NASDAQ: ATML) announced today the availability of the highly integrated driver ICs ATA6833 and ATA6834 for brushless DC motor applications such as fuel pumps, turbo chargers, or exhaust gas recirculation -- applications which are continuously operated and therefore require maximum reliability. These new devices can also be used for premium-class convenience electronics such as power window or seat adjustment applications, which benefit from the low noise of the new BLDC motor driver ICs. Both devices are manufactured using Atmel's high-voltage 0.8 um BCD-on-SOI technology, which enables the use of much smaller lower-cost 7 mm x 7 mm QFN packages.

The ATA6833/34 are industry's first brushless DC motor driver ICs with integrated driver, watchdog, voltage regulator, and LIN interface functionality in a single IC. This facilitates extremely small designs and helps to reduce overall system costs by about a third. Furthermore, the high integration level improves board quality by reducing the number of solder joints.

The ATA6833 is a BLDC motor System Basis Chip with 3 half-bridge gate drivers. The 3 push-pull stages with integrated charge pump can drive 6 external NMOS transistors. The integrated watchdog monitors the microcontroller, e.g., Atmel's automotive-qualified ATmega32M1, which in turn is supplied by an integrated voltage regulator programmed to 5V or 3.3V output voltage providing 100 mA current capability. An integrated LIN 2.1 transceiver -- based on Atmel's stand-alone LIN transceiver ATA6662 -- completes the system basis features. In standby mode, the current consumption is less than 50 microampere.

The ATA6834, the ATA6833's high-temperature companion, handles operating chip temperatures of up to 200 degrees Celsius and is therefore ideal for all high-temperature "under-the-hood" applications where actuators handle the flow of hot exhaust gas or hot oil. To implement space-saving designs, the ECUs can be attached to a turbo charger or used to build a mechatronic unit along with a pump motor.

The ATA6833/34 provide several protection features including a two-stage thermal warning and thermal shut-off as well as open-load, overload, short-circuit, and undervoltage detection with switch-off functionality. To protect the external NMOS transistors, a built-in shoot-through protection helps to avoid dangerous simultaneous activation of a high-side and a low-side transistor between supply and ground. Customers can adapt the dead time to the needs of their NMOS transistors by the value of an external resistor/capacitor combination.

These devices meet the strict automotive qualification demands (protection against conducted interference, EMC, and ESD protection) and can withstand transients as specified in ISO/TR 7637.

Availability and Pricing

Samples of the new brushless motor driver ICs ATA6833/34 are now available in QFN48 packages measuring only 7 mm x 7 mm. Pricing starts at US $2.95 for the ATA6833 and at US $3.30 for the ATA6834 for 10k-piece quantities each. An application board for development support, including a programmed AVR(R) microcontroller, can be ordered for US $139.

    BCDMOS = Mixed-signal technology with Bipolar, CMOS and DMOS components
    BLDC = Brushless Direct Current
    ECU = Electronic Control Unit
    EMC = Electro Magnetic Compatibility
    ESD = Electro Static Discharge
    NMOS = N-type Metal Oxide Semiconductor
    QFN = Quad Flat No leads
    SOI= Silicon on Insulator

About Atmel

Atmel is a worldwide leader in the design and manufacture of microcontrollers, advanced logic, mixed-signal, nonvolatile memory and radio frequency (RF) components. Leveraging one of the industry's broadest intellectual property (IP) technology portfolios, Atmel is able to provide the electronics industry with complete system solutions focused on consumer, industrial, security, communications, computing and automotive markets.

(C) 2008 Atmel Corporation. All rights reserved. Atmel(R), Atmel logo and combinations thereof, AVR(R), and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.


Product information on Atmel's brushless motor driver ICs ATA6833/34 may be retrieved at: (ATA6833) (ATA6834)

     Press Contacts
     Dr. Susanne van Clewe, Marcom Manager Communications and Automotive
     Tel: +49 7131 67-2081, Email:
     Helen Perlegos, Public Relations
     Tel: +1 408 487-2963, Email:

Web site:

Review Article Be the first to review this article

Featured Video
Mid-Level Mechanical Engineer for Kiewit at lenexa, Kansas
Mechanical Engineer for Allen & Shariff Corporation at Pittsburgh, Pennsylvania
System Designer/Engineer for Bluewater at Southfield, Michigan
Geospatial Analyst/Programmer for LANDIQ at Sacramento, California
GIS Data Analyst for CostQuest Associates, Inc. at Cincinnati, Ohio
Product Manager for CHA Consulting, Inc. at Boston, Massachusetts
Upcoming Events
ESPRIT World 2018 at Indianapolis Marriott Downtown 350 West Maryland Street Indianapolis IN - Jun 11 - 15, 2018
HxGN LIVE 2018 at The Venetian Las Vegas NV - Jun 12 - 15, 2018
IMTS2018 International Manufacturing Tech Show at McCormick Place Chicago IL - Sep 10 - 15, 2018
4th International Conference on Sensors and Electronic Instrumentation Advances (SEIA' 2018) at Movenpick Hotel Amsterdam City Centre Amsterdam Netherlands - Sep 19 - 21, 2018
Kenesto: 30 day trial

Internet Business Systems © 2018 Internet Business Systems, Inc.
25 North 14th Steet, Suite 710, San Jose, CA 95112
+1 (408) 882-6554 — Contact Us, or visit our other sites:
AECCafe - Architectural Design and Engineering EDACafe - Electronic Design Automation GISCafe - Geographical Information Services TechJobsCafe - Technical Jobs and Resumes ShareCG - Share Computer Graphic (CG) Animation, 3D Art and 3D Models
  Privacy PolicyAdvertise