AUTOMOTIVE WIDE VIN FRONT END REFERENCE DESIGN

Abstract

Our reference design offers a cost-effective solution for automotive applications such as the
power tree for automotive digital cockpit applications. The ideal diode converter provides low-loss
reverse polarity protection to the system, followed by an input filter. The dual-synchronous buck
converter provides a 3.3 V rail, which can support up to 15 A for a processor module, and a 5V rail
with 3 A. The TPS62810 synchronous buck converter provides a 1.1 V/3 A rail from the 5 V output.
Another independent 3.3 V rail with 3 A from KL30 is provided by the synchronous buck. It uses lowloss smart diode controller for input reverse polarity protection and includes an input filter to
minimize the reflected ripple of the buck converters High efficiency across all rails for low power
dissipation in space constrained applications