12V/400W Dual-Phase 1/4 Brick Buck Converter Reference Design Delivers 97% Peak Efficiency

This 400W ¼ brick DC/DC converter leverages the LM5119’s dual-phase capability to drive a 33A load in an industry-standard ¼ brick module footprint. This compact design delivers 97% peak efficiency while maintaining balanced current through each phase: which reduces thermal stress and enables lower system cost by eliminating the need to over-design the surrounding power components.

Greater than 94% efficiencySwitching frequency 100 kHzInput range 33V to 60V maximumOutput voltage of 12V at 33AStandard ¼ brick footprint (2.3 x 1.45")This end-equipment design is production-ready and supported with design files and an application note"