Automotive Discrete SBC Pre-Boost, Post-Buck With CAN Reference Design(TIDA-01429)

The TIDA-01429 reference design implements a wideinput voltage boost controller, followed by a wide input voltage buck converter set to 5.0 V. The 5.0 V supply is used for powering a Controller Area Network (CAN) transceiver and a compact fixed 3.3 V linear drop-out (LDO) regulator for supplying the C2000 microcontroller. This design has been tested for CISPR 25 radiated emissions per absorber lined shielded enclosure (ALSE) method, CISPR25 conducted emissions via the voltage method, and for immunity to Bulk Current Injection (BCI) per ISO 11452-4, all with CAN communication operating at 500 KBPS. This is a electromagnetic compliance (EMC) vetted 3-stage power tree with controller area network (CAN) reference design that can be used in many automotive applications requiring operation with input voltages as low as 3.5 V. A system basis chip (SBC) is an integrated circuit (IC) that combines many typical building blocks of a system, which includes transceivers, linear regulators, and switching regulators. While these integrated devices can offer size and cost savings in a number of applications, the integrated devices do not work in every case. For applications where an SBC is not a good fit, it might be beneficial to build a discrete implementation of these aforementioned building blocks thus making a discrete SBC.


Wide input voltage, adjustable boost controller Wide input voltage, fixed 5V buck converter Passes Class 5 CISPR 25 radiated emissions Passes Class 4 CISPR 25 conducted emissions Maintains regulated 3.3V and 5V supplies through battery input voltages down to 3.5V Able to survive load dump voltages up to 40V


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Automotive Discrete SBC Pre-Boost, Post-Buck With CAN Reference Design TIDA-01429

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