Power Electronics

AMI Semiconductor introduces CAN transceiver

AMI Semiconductor has introduced the AMIS-42665, a single-chip CAN transceiver said to combine performance up to 1 Mbaud with low standby current and a bus-initiated wake-up feature.

The new part is compliant with ISO 11898-2 and ISO 11898-5 and suitable for 12 V and 24 V automotive applications. It targets vehicle body and comfort control functions ranging from electric windows to climate control.

The device offers an electrostatic discharge (ESD) rating of ±8 kV human body model (HBM) to eliminate the need for additional filtering and protection. Low standby current helps designers meet power targets when the vehicle is idle, according to Bob Klosterboer, senior vice president of integrated mixed-signal products. Remote wake-up can be initiated locally or via the CAN bus, depending on specific application requirements.

Klosterboer said the new device integrates in a “green” SOIC 150-8 package all of the functionality needed to provide the interface between a CAN controller and the physical bus, providing differential signaling capability to the CAN bus via the transmit and receive pins of the CAN controller. The part can be used as a drop-in replacement for other CAN transceivers, including Philips’ TJA1040.

Other features include a transmit data dominant time-out function, thermal protection, short circuit protection, and protection against transients. Carefully matched output signals eliminate the need for a common-mode choke by minimizing electromagnetic emission (EME), while the wide common-mode voltage range of the receiver inputs (±35V) ensures low electromagnetic susceptibility (EMS).

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