NBM Bus Converter NBM6123x46C15A6yzz S CUNRTL S C US Non-Isolated, Fixed Ratio DC-DC Converter Features & Benefits Product Ratings Up to 160A continuous secondary current V = 42V (36 46V) I = up to 160A PRI SEC 3 Up to 3600W/in power density V = 14V (12.0 15.3V) SEC 98.2% peak efficiency K = 1/3 (no load ) Parallel operation for multi-kW arrays OV, OC, UV, short circuit and thermal protection Product Description 6123 through-hole ChiP package The NBM6123x46C15A6yzz is a high efficiency Non-Isolated Bus Converter, operating from a 36 46V primary bus to deliver a 2.402 x 0.990 x 0.284in DC non-isolated, ratiometric secondary voltage from 12.0 15.3V . DC (61.00 x 25.14 x 7.21mm) The NBM6123x46C15A6yzz offers low noise, fast transient Bidirectional start up and steady state operation response, and industry leading efficiency and power density. In addition, it provides an AC impedance beyond the bandwidth of most downstream regulators, allowing input capacitance normally Typical Applications located at the input of a PoL regulator to be located at the primary side of the NBM. With a primary to secondary K factor of 1/3, that DC Power Distribution capacitance value can be reduced by a factor of 9x, resulting in savings of board area, material and total system cost. High End Computing Systems Leveraging the thermal and density benefits of Vicors ChiP Automated Test Equipment packaging technology, the NBM offers flexible thermal Industrial Systems management options with very low top and bottom side thermal impedances. Thermally-adept ChiP-based power components High Density Power Supplies enable customers to achieve low cost power system solutions Communications Systems with previously unattainable system size, weight and efficiency attributes quickly and predictably. Transportation The NBM non-isolated topology allows start up and steady state operation in forward and reverse directions and provides bidirectional protections. However if the power train is disabled by any protection and V is present, then a voltage equal to V SEC SEC minus two diode drops will appear on the primary side. NBM Bus Converter Rev 1.6 Page 1 of 26 11/2017NBM6123x46C15A6yzz Typical Applications NBM TM EN enable/disable switch VAUX FUSE +V +V PRI SEC SGND PGND V PRI PRIMARY SECONDARY C POL I NBM ELEC SOURCE RTN NBM6123x46C15A6yzz + Point of Load NBM Bus Converter Rev 1.6 Page 2 of 26 11/2017