Power Electronics
I-Bar Chokes for Automotive Networks

I-Bar Chokes for Automotive Networks

Pulse Electronics Corporation introduced the HOT ROD product family of I-Bar chokes for automotive networks, a new concept to provide EMC/EMI protection for automotive electronics. The new line of I-Bar HOT ROD chokes are optimized to meet Broadcom Corporation's BroadR-Reach Automotive Ethernet technology for mode conversion up to 400 MHz. The first part in the series, the AE2000, meets the need for the current generation of 100 Mbps BroadR-Reach automotive Ethernet transceivers.

The HOT ROD AE20xx family of small-sized (4.5x3.2x2.8mm) SMD components has been approved by the Automotive Electronics Council (AEC) to meet the reliability criteria of AEC-Q200. The AE20xx family of devices is smaller and lighter in weight than Pulse Electronics' current HM6902NL chokes, used in digital camera networks supporting BroadR-Reach technology. AEC-Q200 is a stringent series of stress and accelerated life testing required by the automotive industry for high reliability components. The AE20xx products are especially suited for use in a confined space. They have an operating temperature range of -40 to +125°C. A high temperature capability is needed for use particularly on the outside of a vehicle, such as for a camera unit in the fenders, bumpers, and on wing mirrors.

Broadcom's BroadR-Reach automotive Ethernet technology delivers high-performance bandwidth of 100 Mbps over an unshielded single twisted pair cable. By eliminating the need for expensive, cumbersome shielded cabling, automotive manufacturers can significantly reduce connectivity costs and cabling weight.

Early adopters of the BroadR-Reach automotive Ethernet standard used larger toroidal solutions, such as Pulse Electronics' HM6902NL, and at 5.0x5.0x5.0mm it was the smallest size available. The AE2000 is an extension of this work and builds on Pulse's renowned experience in the design of coil-wound topologies and its ongoing development efforts with silicon vendors such as Broadcom. Pulse will continue to develop new components for future faster generations of Ethernet-based application-specific technology. Such products will address the emerging standards of AVB (Audio Video Bridging) over one pair Ethernet and power over single twisted pair Ethernet.

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