BCM Bus Converter BCM400y500x1K8A31 S CUNRTLS C US Fixed Ratio DC-DC Converter Features Product Ratings Up to 1750 W continuous output power 3 2735 W/in power density V = 400 V ( 260 410 V) POUT = up to 1750 W IN 98.0 % peak efficiency V = 50 V ( 32.5 51.3 V) OUT 4242 Vdc isolation K = 1/8 (NO LOAD) Parallel operation for multi-kW arrays OV, OC, UV, short circuit and thermal protection Product Description 6123 through-hole ChiP package n 2.494 x 0.898 x 0.286 The VI Chip Bus Converter (BCM) is a high efficiency Sine ( 63.34 mm x 22.80 mm x 7.26 mm) Amplitude Converter (SAC), operating from a 260 to 410 VDC TM primary bus to deliver an isolated ratiometric output from PMBus management interface* 32.5 t o 51.3 VDC. The BCM400y500x1K8A31 offers low noise, fast transient response, and industry leading efficiency and power density. In Typical Applications addition, it provides an AC impedance beyond the bandwidth of most downstream regulators, allowing input capacitance 380 DC Power Distribution normally located at the input of a POL regulator to be located at High End Computing Systems the input of the BCM module. With a K factor of 1/8 , that capacitance value can be reduced by a factor of 64 x, resulting Automated Test Equipment in savings of board area, material and total system cost. Industrial Systems The BCM400y500x1K8A31 , combined with the D44TL1A0 High Density Power Supplies Digital Supervisor and I13TL1A0 Digital Isolator, provide a Communications Systems secondary referenced PMBus compatible telemetry and Transportation control interface. This interface provides access to the BCMs internal controller conguration, fault monitoring, and other telemetry functions. Leveraging the thermal and density benets of Vicors ChiP packaging technology, the BCM module offers exible thermal management options with very low top and bottom side thermal impedances. Thermally-adept ChiP-based power components, enable customers to achieve low cost power system solutions with previously unattainable system size, weight and efficiency attributes, quickly and predictably. *When used with D44TL1A0 and I13TL1A0 chipset BCM Bus Converter Rev 1.3 vicorpower.com 800 927.9474 Page 1 of 23 05/2015 BCM400y500x1K8A31 Typical Application BCM PRM SER-OUT ENABLE VAUX enable/disable switch SER-OUT REF/ VTM TRIM REF EN V Adaptive Loop Temperature Feedback OUT EN AL VT TM +OUT VTM Start Up Pulse SHARE/ VC VC SER-IN CONTROL NODE enable/disable SGND R R TRIM PRM AL PRM switch SER-IN PC IFB LOAD C R R O VTM CER I PRM DAMP O PRM DAMP FUSE PRM SGND +IN +OUT +IN +OUT +IN L L I PRM FLT O PRM FLT V C R C IN I BCM ELEC I PRM CER O PRM CER IN IN OUT IN OUT OUT SGND PRIMARY SECONDARY PRIMARY SECONDARY SOURCE RTN LOAD RTN ISOLATION BOUNDRY ISOLATION BOUNDRY PRM SGND Digital Supervisor Digital Isolator Host C NC PRI OUT A SEC IN A VDDB t SER-IN + V EXT TX VDD PRI OUT B SEC IN B SER-OUT SGND PRI IN C SEC OUT C RX PRI COM SEC COM SGND PMBus PMBus SGND SGND SGND BCM400y500x1K8A31 + PRM + VTM, Adaptive Loop Configuration V REF BCM SGND REF 3312 PRM SGND SER-OUT IN OUT Voltage Sense and Error Amplifier (Differential) SER-OUT GND VAUX ENABLE enable/disable switch VTM REF/ TRIM REF EN EN SGND SGND VT TM +OUT AL Voltage Reference with Soft Start SER-IN SHARE/ VC VC enable/disable CONTROL NODE VTM Start up Pulse switch SER-IN PRM SGND V + V PC IFB VOUT R SGND R LOAD C I PRM DAMP +IN IN O PRM DAMP O VTM CER FUSE +IN +OUT +IN +OUT +IN L L External Current Sense V I PRM FLT C C O PRM FLT IN C I PRM ELEC O PRM CER I BCM ELEC IN OUT IN OUT IN OUT SGND PRIMARY SECONDARY SOURCE RTN PRIMARY SECONDARY ISOLATION BOUNDRY ISOLATION BOUNDRY PRM SGND Digital Supervisor Digital Isolator Host C NC PRI OUT A SEC IN A VDDB t SER-IN + V EXT VDD PRI OUT B SEC IN B TX SER-OUT SGND PRI IN C SEC OUT C RX PRI COM SEC COM SGND PMBus PMBus SGND SGND SGND BCM400y500x1K8A31 + PRM + VTM, Remote Sense Configuration BCM Bus Converter Rev 1.3 vicorpower.com 800 927.9474 Page 2 of 23 05/2015 Voltage Sense