The MAXREFDES1204 is a single-output SEPIC converter reference design developed using the MAX16990 controller. This reference design is rated to operate over a wide input voltage range from 6V to 18V. The design can deliver an output power of 24W at 12V. It is targeted for automotive applications.
This document describes the hardware shown above. It provides a detailed, systematic technical guide to designing a SEPIC converter using Maxim’s MAX16990 current-mode controller. The power supply uses uncoupled inductors and has been built and tested, details of which follow later in this document.