Additional Resources: Product Page date 11/07/2014 page 1 of 36 SERIES: NQB-D DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS FEATURES GENERAL CHARACTERISTICS pin and function compatible with configurable soft start/stop Architects of Modern Power product precision delay and ramp-up standards voltage margining quarter-brick with digital PMBus interface voltage/current/temperature monitoring 57.9 x 36.8 x 11.3 mm configurable output voltage (2.28 x 1.45 x 0.445 in) configurable fault response industry standard 5-pins for power good intermediate bus architectures industry-leading power density for telecom and datacom 127~141W / sq. in high efficiency, typ. 96.4% at half load, 12 Vout fully regulated advanced bus converter from 36~75Vin 2,250 Vdc input to output isolation fast feed forward regulation to manage line transients optional baseplate for high temperature applications droop load sharing with 10% current share accuracy PMBus Revision 1.2 compliant 2.9 million hours MTBF ISO 9001/14001 certified supplier input voltage output voltage output current output wattage MODEL max max (Vdc) (Vdc) (A) (W) NQB-420DWA-AN 36~75 12 35 420 NQB-468DMA-AN 40~60 12 39 468 NQB-415DWB-AN 36~75 12.45 35 415 NQB-462DMB-AN 40~60 12.45 39 462 cui.comAdditional Resources: Product Page CUI Inc SERIES: NQB-D DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS date 11/07/2014 page 2 of 36 PART NUMBER KEY NQB- XXX D X X - X X X X - XXX -ES X Base Number Engineering Phase: A~Z Design Output Power: 1~999 Engineering Sample: ES Digital Interface Firmware Configuration: 000~ZZZ Input Voltage Range: W = wide (36~75 V) M = medium (40~60 V) Heatsink Option:blan = open frame H = heatsink flat G = heatsink with GND pin Nominal Output Voltage: A = 12.0 V B = 12.45 V C = 9.6 V Enable Logic Sense: Load Sharing Function: D = 9.0 V N = negative logic D = Vout droop E = 5.0 V P = positive logic Pin Description: A = 5.33 mm (0.210 in.) B = 4.57 mm (0.180 in.) C = 3.69 mm (0.145 in.) D = 2.79 mm (0.110 in.) S = SMT Packaging: Example part number: NQB-420DWA-AN-001 20 converters(through hole pin)/tray, PE foam dissipative 420 W output power, digital pins 20 converters(surface mount pin)/tray, Antistatic PPE wide input voltage range, 12.0 V output 5.33 mm pins, negative enable logic firmware revision 001 CONTENTS Part Number Key........................................................2 EMC Specification.........................................20 General Information...................................................3 Operating Information...................................21 Safety Specification....................................................3 Thermal Consideration..................................24 Absolute Maximum Ratings..........................................4 Connections............................................25 PMBus Interface...........................................26 Electrical Specification: Mechanical Information.................................29 Soldering Information...................................32 12 V, 35 A, 420 W, 36~75 Vin NQB-420DWA-AN....................6 Delivery Package Information.........................33 12 V, 39 A, 468 W, 40~60 Vin NQB-468DMA-AN...................10 Product Qualification Specification...................35 12.45 V, 35 A, 415 W, 36~75 Vin NQB-415DWB-AN...............14 12.45 V, 39 A, 462 W, 40~60 Vin NQB-420DMB-AN...............19 cui.com