Reference Designs
Sync Buck for Silver Box (3.3V@25A)
Texas Instruments
PMP3199 is a dual output sync buck design for a silver box power supply. Silver box power supplies are used in desk top PCs. The input voltage is 12V; the TPS5124 is used to generate 5V@20A and 3.3V@25A. The design offers great efficiency (up to 92%).