Not Recommended For New Designs NBM in a VIA Package Bus Converter NBM3814x60E12A7yzz S CUNRTL S C US Non-Isolated, Fixed-Ratio DC-DC Converter Features & Benefits Product Ratings Up to 170A continuous low-voltage-side current V = 54V (36 60V) I = up to 170A HI LO Fixed transformation ratio (K) of 1/5 V = 10.8V (7.2 12.0V) LO K = 1/5 (no load ) 3 Up to 1046W/in power density 97.8% peak efficiency Product Description Bidirectional operation capability The NBM3814x60E12A7yzz in a VIA package is a high-efficiency Integrated ceramic capacitance filtering Bus Converter, operating from a 36 to 60V high-voltage bus to DC deliver a non-isolated 7.2 to 12V unregulated, low voltage. DC Parallel operation for multi-kW arrays This unique, ultra-low-profile module incorporates OV, OC, UV, short circuit and thermal protection DC-DC conversion and integrated filtering in a chassis- or PCB-mount form factor. 3814 package The NBM offers low noise, fast transient response and High MTBF industry-leading efficiency and power density. Thermally enhanced VIA package Leveraging the thermal and density benefits of Vicor VIA packaging technology, the NBM module offers flexible thermal management Typical Applications options with very low top- and bottom-side thermal impedances. When combined with downstream Vicor DC-DC conversion DC Power Distribution components and regulators, the NBM allows the Power Design Information and Communication Engineer to employ a simple, low-profile design, which will Technology (ICT) Equipment differentiate the end system without compromising on cost or performance metrics. High-End Computing Systems The NBM non-isolated topology allows start up and steady-state Automated Test Equipment operation in forward and reverse directions. It provides Industrial Systems bidirectional protections. However if the powertrain is disabled by any protection and V is present, then a voltage equal to V LO LO High-Density minus two diode drops will appear on the high-voltage side. Energy Systems Transportation Size: 3.76 x 1.40 x 0.37in 95.59 x 35.54 x 9.40mm Part Ordering Information High Side Max Max Max Product Package Package Package Voltage Product Grade HighSide LowSide LowSide Option Field Function Length Width Type Range (Case Temperature) Voltage Voltage Current Ratio NBM 38 14 x 60 E 15 A7 y zz NBM = 00 = Chassis/Always On a Non-Isolated Length in Width in B = Board VIA C = 20 to 100C Internal Reference 04 = Short Pin/Always On a Bus Converter Inches x 10 Inches x 10 V = Chassis VIA T = 40 to 100C 08 = Long Pin/Always On Module a High-Temperature Current Derating may apply See Figure 1, specified thermal operating area. NBM in a VIA Package Rev 1.6 Page 1 of 25 08/2018NBM3814x60E12A7yzz Not Recommended For New Designs Typical Applications NBM in a VIA Package FUSE +HI +LO LO HI Side Side V HI V PGND LO PoL NBM3814x60E12A7yzz at point-of-load providing fixed ratio step-down DC-DC conversion to PoL devices. NBM is operating in forward direction. NBM in a VIA Package FUSE +HI +LO HI LO V LO Side Side V PGND LOAD HI NBM3814x60E12A7yzz providing fixed ratio step-up DC-DC conversion. NBM is operating in reverse direction. NBM in a VIA Package Rev 1.6 Page 2 of 25 08/2018