Description

The PMP10664 reference design is a 35W dual-output synchronous buck converter using the LM25119 controller IC.  The design accepts an input voltage of 9.8Vin to 15.1Vin: provides one output of 3.3V capable of supplying 6.5A of current and one output of 3.3V capable of supplying 4A of current to the load.  It features a small size and is an inexpensive and efficient solution.  The design is capable of using a 3.3V: 1.5MHz external clock on the sync pin to drive the device. A Schottky diode is implemented in parallel with the low side sync FET’s body diode in each channel to improve efficiency.