NBM Bus Converter NBM6123x60E12A7yzz S CUNRTL S C US Non-Isolated, Fixed Ratio DC-DC Converter Features & Benefits Product Ratings Up to 170A continuous secondary current V = 54V (36 60V) I = up to 170A PRI SEC 3 Up to 3000W/in power density V = 10.8V (7.2 12.0V) SEC 98% peak efficiency K = 1/5 (no load ) Parallel operation for multi-kW arrays OV, OC, UV, short circuit and thermal protection Product Description 6123 through-hole ChiP package The NBM6123x60E12A7yzz is a high efficiency Non Isolated Bus Converter operating from a 36 60V primary bus to deliver a 2.402 x 0.990 x 0.284in DC non-isolated, ratiometric secondary voltage from 7.2 to 12.0V . (61.00 x 25.14 x 7.21mm) DC The NBM6123x60E12A7yzz 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 Typical Applications most downstream regulators, allowing input capacitance normally located at the input of a PoL regulator to be located at the primary DC Power Distribution side of the NBM. With a primary to secondary K factor of 1/5, that capacitance value can be reduced by a factor of 25x, resulting in High End Computing Systems savings of board area, material and total system cost. Automated Test Equipment Leveraging the thermal and density benefits of Vicor ChiP Industrial Systems packaging technology, the NBM offers flexible thermal management options with very low top and bottom side thermal High Density Power Supplies impedances. Thermally-adept ChiP-based power components Communications Systems enable customers to achieve low cost power system solutions with previously unattainable system size, weight and efficiency Transportation attributes quickly and predictably. 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 1.8 Page 1 of 26 11/2017NBM6123x60E12A7yzz 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 NBM6123x60E12A7yzz + Point of Load NBM Bus Converter Rev 1.8 Page 2 of 26 11/2017