Description

PMP10655 is a dual-output synchronous buck converter reference design using the LM5140 controller IC. The reference design accepts an input voltage between 6Vin and 18Vin and is capable of supplying a maximum of 8A of continuous current (14A Peak) to the load: per output. Vout1 and Vout2 maintain regulation during cold-crank (Vin dip to 4.3Vin) and load-dump (Vin peak to 42Vin) conditions. Switching of the two converters are 180 degrees out of phase between each other.  The design also features the LM5050-1 OR-ing controller configured for efficient reverse polarity protection of the input.  PMP10655 is built on a 4-layer FR-4 PCB: with 2 oz. Copper on the Top and Bottom layers: and 1 oz. Copper on the two internal layers.