BCM Bus Converter MBCM270x450M270A00 S C US CUNRTL S Isolated Fixed Ratio DC-DC Converter Features & Benefits Product Ratings 270V 45.0V 270W Bus Converter DC DC V = 270V (230 330V) P = up to 270W IN OUT MIL-STD-704E/F Compliant V = 45V (38.3 55.0V) OUT High efficiency (>96.0%) reduces K = 1/6 (no load ) system power consumption 3 High power density (>919 W/in ) Description reduces power system footprint by >40% Contains built-in protection features against: The MIL-COTS VI Chip bus converter is a high efficiency (>96.0%) n Undervoltage Sine Amplitude Converter (SAC) operating from a 230 to 330V primary bus to deliver an isolated 38.3 55.0V secondary voltage. n Overvoltage n Overcurrent The MBCM270F450M270A00 is provided in a VI Chip package n Short Circuit compatible with standard pick-and-place and surface mount n Overtemperature assembly processes. Provides enable/disable control, Part Numbering internal temperature monitoring Can be paralleled to create multi-kW arrays Product Number Package Style (x) Product Grade F = J-Lead MBCM270x450M270A00 M = -55 to 125C T = Through hole Typical Applications For Storage and Operating Temperatures see General Characteristics. High Voltage 270V Aircraft Distributed Power Provides Interface for high power density PRM modules High Density Power Supplies Communications Systems Typical Application BCM PRM VTM V OUT +OUT ENABLE VAUX PC TM VTM Start Up Pulse VC TRIM VC ON/OFF CONTROL Adaptive Loop Temperature Feedback PC AL VT TM SHARE/ REF/ SGND CONTROL NODE REF EN R R TRIM AL C NC IFB OUT R I PRM SGND FUSE V +IN +OUT +IN +OUT +IN IN L L O PRM I PRM VF: 20 V to 55 V C C C IN PRM O PRM I BCM IN OUT IN OUT IN OUT SGND SEC GND PRI GND PRIMARY SECONDARY ISOLATION BOUNDRY SGND BCM Bus Converter Rev 1.3 vicorpower.com Page 1 of 22 08/2016 800 927.9474MBCM270x450M270A00 Pin Configuration 43 21 A A B B +OUT +IN C C D D E E F -OUT G TM H H J RSV J K K PC +OUT L L M M N N -IN P P R -OUT R T T Bottom View Pin Descriptions Pin Number Signal Name Type Function A1-E1, A2-E2 +IN INPUT POWER Positive input power terminal INPUT POWER L1-T1, L2-T2 IN Negative input power terminal RETURN H1, H2 TM OUTPUT Temperature monitor, input side referenced signal J1, J2 RSV NC No connect K1, K2 PC OUTPUT/INPUT Enable and disable control, input side referenced signal A3-D3, A4-D4, +OUT OUTPUT POWER Positive output power terminal J3-M3, J4-M4 E3-H3, E4-H4, OUTPUT POWER OUT Negative output power terminal N3-T3, N4-T4 RETURN BCM Bus Converter Rev 1.3 vicorpower.com Page 2 of 22 08/2016 800 927.9474