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New Products
March 22, 2013
NXP Launches First Automotive-Grade Isolated CAN Transceiver
Building on its industry-leading position in in-vehicle networking, NXP Semiconductors N.V. has introduced the TJA1052i, a high-speed Controller Area Network (CAN) transceiver with integrated galvanic isolation technology. The TJA1052i is the first ISO11898-2 compliant product of its kind to offer this level of integration at AEC-Q100 automotive grade quality.
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The TJA1052i offers designers a choice for all types of CAN networks where high- and low-voltage networks co-exist - such as in electric and hybrid vehicles - and require galvanic isolation for safety reasons. Adding isolation to the CAN transceiver significantly simplifies the design effort to safely bridge between high and low voltage levels. The TJA1052i provides protection against electric shocks, overvoltage, ground offset and reverse current, while significantly improving signal integrity in noisy electromagnetic environments.
By integrating an existing market accepted CAN transceiver with a Galvanic Isolator in one package, this new solution ensures matching dynamic parameters, reduces board space, improves signal performance, and increases overall reliability and cost-effectiveness. Historically, automotive OEMs and Tier 1 suppliers have used expensive opto-couplers to isolate the CAN transceiver, with performance in such a standalone solution tending to degrade over time.
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The TJA1052i is well-suited for the growing market of hybrid and full electric vehicles (H/EVs), where high and low voltage levels co-exist. H/EVs are equipped with multiple battery modules - typically controlled via CAN by the Battery Management System - which together can supply up to 500 Volts and also power other high-voltage applications such as Inverter, Start/Stop, DC/DC Converter, Charger and Air Conditioning systems. These systems need to communicate with other Electronic Control Units (ECUs) via the CAN Bus, and are typically operated from the 12V board net.
Isolated CAN products are also needed in industrial applications where ECUs controlling high voltage applications and other ECUs need to be connected to each other via the CAN bus. Application examples for the TJA1052i in non-automotive areas are industrial equipment, energy storage systems, building automation and H/EV charging stations.
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"The TJA1052i is another great example of NXP's strategy to both connect the car and improve energy efficiency - even under challenging conditions," said Toni Versluijs, vice president and general manager, in-vehicle networking business, NXP Semiconductors. "Our third-generation automotive CAN transceivers are already approved and used by multiple OEMs. By integrating galvanic isolation into the TJA1052i, we are first in the industry to deliver an automotive-grade solution that saves both space and money, while making it easier for our customers to build and connect their ECUs."
The TJA1052i is ramping up in production with immediate effect.
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