Description

The PMP10610 is a 12W SEPIC power supply reference design for automotive applications. It takes 12V nominal input voltage: and generates a 12V @ 1A output with 92% peak efficiency. The SEPIC converter topology allows voltage step-up and step-down conversion. The design covers a wide input range of 4.5V to 20V. When using it in the 12V car battery system: the design can operate uninterrupted during vehicle start-stop. The reference design features the LM3481 as the SEPIC controller: and it is available in automotive grade AEC-Q100 Grade 1. The design uses single coupled inductor to achieve compact solution size. The component area of the SEPIC is about 24 x 30mm (1.2 x 0.95inch). The reference board is layout-optimized for improved EMI performance: and there is an optional input EMI filter section on the board. The board is tested under the automotive EMC standard: CISPR 25: and its conducted emissions are in compliance with the CISPR 25 Class 5 limits.