The benefits of developing all boards of a system concurrently on a single CAD canvas.

A multi-board system comprises two or more interconnected PCBs in a single enclosure. Typically, the boards will have very different roles. For example, if you consider e-mobility (i.e., the industry trend of switching over to electric drive trains and actuation in the automotive, aerospace and other transportation sectors), many modules are multi-board systems. One board will be a controller. Another will be for switching in and out potentially high current loads.

While they share many common design and manufacturing considerations, the PCBs will warrant special attention when it comes to their specific roles. In this respect, the controller board might be very high-density and feature BGA devices (with hundreds of balls each), flip-chip devices, wire-bonded die and embedded components (i.e., the PCB substrate contains structures with resistive and/or capacitive properties).

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