Atmel’s LIN2.0 system basis chip features silent mode

Feb. 1, 2006
A new LIN 2.0 system basis chip from Atmel Corporation (www.atmel.com) is optimized for up to 40V operation in automotive comfort and powertrain applications ranging from door modules and seat control to engine control systems.

A new LIN 2.0 system basis chip from Atmel Corporation is optimized for up to 40 V operation in automotive comfort and powertrain applications ranging from door modules and seat control to engine control systems.

The ATA6621, which includes a 5 V voltage regulator and a watchdog, is manufactured on Atmel’s BCDMOS process, a mixed-signal technology with bipolar, CMOS and DMOS components. Integration of the voltage regulator and watchdog reduces system costs by approximately 25%, according to the company, and reduces board space requirements.

Reduced board space benefits applications like sensor LIN slave nodes that are getting smaller and providing ever decreasing PCB area, according to Torsten Mann, Atmel's marketing director for automotive and control products.

The ATA6621 features typical quiescent current consumption of 10 µA in standby mode. A silent mode draws 40 µA, compared with 50 mA in normal operation. "Due to the increasing number of ECUs in a vehicle and the communication via the bus systems, the overall current consumption of the ECUs needs to be kept as low as possible due to the permanent power requirements placed on the vehicle's battery," Mann notes.

The ATA6621 incorporates a controlled slew rate as per the LIN 2.0 specification, thus reducing EMC problems. Mann says the part’s input filter helps minimize RF interference caused by signals on the bus line. To meet 42 V power net requirements, the bus output can tolerate short circuits of up to 60 V. The device meets automotive qualification demands for protection against conducted interference, EMC and 6 kV ESD protection at the supply and LIN pins, and it can withstand transients as specified in ISO/TR 7637/1.

Sponsored Recommendations

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Bidirectional power for EVs: The practical and creative opportunities using power modules

March 18, 2024
Bidirectional power modules enable vehicle-to-grid energy flow and other imaginative power opportunities. Learn more about Vicor power modules for EVs

Article: Tesla commits to 48V automotive electrics

March 18, 2024
48V is soon to be the new 12V according to Tesla. Size and weight reduction and enhanced power efficiency are a few of the benefits.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!