Next-gen IB converter delivers 720 W in ¼ brick

The NQBS second-generation high density isolated intermediate bus converter (IBC) family target the rising power requirements and efficiency demands in telecom systems and data centers. The modules are housed in a quarter brick package and deliver 720 W, have a power density of 445 W/in3, and offer efficiencies of 96%.

The modules feature regulation across the entire 42 to 60 Vdc input range and a droop load share feature with 10% current share accuracy for higher power boards. The series provides an output of 12 Vdc at 60 A in an industry standard DOSA footprint (2.30 x 1.45 x 0.485-in.) and provides input to output isolation of 2,250 Vdc. The module’s Solus topology integrates a conventional buck converter into a SEPIC converter to form a SEPIC-fed buck converter; a single stage architecture with one magnetic element, one control switch, and two commutation switches that are optimally controlled by pulse-width modulation.