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Volkswagen approves chokeless HS-CAN transceivers

Volkswagen approves chokeless HS-CAN transceivers

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By eeNews Europe



The performance of an in-vehicle network (IVN) becomes increasingly critical to the vehicle’s safe and reliable operation, with electro-magnetic emission and immunity against electro-magnetic interference being critical parameters to control. Automotive manufacturers define strict specifications which all transceivers must adhere to before being approved for use in the vehicle. Traditionally, a common-mode choke has been required to reach the performance limits in the application, creating an additional cost of approximately 10-15 cents (USD) per module.

NXP’s Mantis HS-CAN transceivers meet EMC requirements without requiring a common-mode choke. Their performance has reached a level where carmakers such as Volkswagen can successfully remove this additional filtering component and still meet the strict requirements established in this industry. This not only reduces costs of applications, but also reduces module space and allows greater design flexibility.

Volkswagen’s announcement marks the first time a German automotive manufacturer has approved a CAN transceiver for use in vehicles without a common-mode choke since the introduction of the stringent EMC requirements, including “Hardware Requirements for LIN, CAN and FlexRay Interfaces in Automotive Application – Audi, BMW, Daimler, Porsche, Volkswagen,” Revision 1.3 / 2012. Volkswagen undertook extended testing to ensure that the device meets these specs even without chokes.

All members of the Mantis family are dual-sourced from wafer fabs in the Netherlands and Singapore to provide an agile and secure manufacturing base. The Mantis family of products was released in August 2013.

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