BCM380P475T800A30 - 800W 380V to 47.5V BCM Bus Converter | Vicor
MPN: BCM380P475T800A30 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $157.36 | $157.36 |
| 10 | $145 | $1,450.00 |
| 100 | $132.5 | $13,250.00 |
| 500 | $121 | $60,500.00 |
| 1,000 | $113.75 | $113,750.00 |
BCM380P475T800A30 Overview
A BCM (Bus Converter Module) is a fixed-ratio DC-DC converter used as a front-end building block in distributed power architectures. By occupying the voltage-transformation stage with a high-efficiency resonant converter, the BCM lets downstream point-of-load (PoL) converters or downstream BCM cascaded stages handle local regulation. Categorically, a BCM sits in the hierarchy: isolated DC-DC converter > bus converter > power management module > semiconductor. Its K-factor (Vout/Vin, here 47.5/380 = 0.125) makes it a 1/8 ratio converter ideal for 380 V nominal bus to a 48 V intermediate bus.
Key specifications include 800 W continuous output power, 96.4% typical efficiency at full load, 4.242 kVDC isolation, parallel operation capability with automatic current sharing, and a wide operating input range of 260-410 VDC. According to the Vicor datasheet, all parameters apply over -40 °C to +125 °C internal temperature (T-Grade), and the module supports full output power with no derating at temperatures up to 65 °C ambient. Integrated protection features include under-voltage lockout (UVLO), over-temperature shutdown, over-current limiting, and short-circuit protection.
Typical applications include 380 VDC distribution in data center and telecom systems, three-phase PFC front-ends, industrial motor drives, renewable energy inverters, and high-voltage battery-to-48V conversion in electric vehicle charging and energy storage systems. Its high efficiency and isolation simplify compliance with safety standards like IEC 60950 and IEC 62368.
When designing with the BCM380P475T800A30, ensure the upstream source provides sufficient inrush current limiting at startup. The ChiP package includes an exposed baseplate for direct heatsink mounting; thermal management is typically achieved via the PCB or a cold-plate interface. Use Vicor's recommended PI31xx and PI33xx PoL siblings for downstream 48V-to-load conversion.
This page synthesizes distributor pricing, drop-in alternatives, and practical design considerations from Vicor's BCM datasheet family, providing information not consolidated in any single manufacturer document.
Drop-in alternatives for BCM380P475T800A30 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BCM384P120T800AC0
✅ Drop-In📋 Reference alternative (not in catalog)
BCM380P475T800A00
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DCM24AP150T320A50
✅ Drop-In📋 Reference alternative (not in catalog)
DCM24AP120T320A50
✅ Drop-In📋 Reference alternative (not in catalog)
VHB350-D24-S24
✅ Drop-In📋 Reference alternative (not in catalog)
BCM380P475T800A30 Maximum Ratings & Electrical Characteristics
| Manufacturer | Vicor Corporation |
| Series | BCM® Bus Converter |
| Topology | Sine Amplitude Converter (SAC), isolated fixed-ratio |
| Input Voltage Range | 260 V to 410 V DC |
| Nominal Input Voltage | 380 V DC |
| Output Voltage | 47.5 V DC (fixed K-factor 1/8) |
| Output Current | 16.9 A maximum |
| Output Power | 800 W continuous |
| K-Factor | 1/8 (Vout = Vin / 8) |
| Isolation Voltage | 4.242 kVDC (primary to secondary) |
| Operating Temperature | -40 °C to +125 °C internal (T-Grade) |
| Package | 9-pin ChiP through-hole module |
| Mounting Type | Through Hole, ChiP package with exposed baseplate |
| Parallel Operation | Supported with automatic current sharing |
| Protection Features | UVLO, over-temperature, over-current, short-circuit |
| Agency Approvals | UL 60950, IEC 60950 / IEC 62368 (per datasheet) |
| RoHS Status | Compliant (per distributor data) |
| Lead Free | Yes |
BCM380P475T800A30 Pin Configuration
| Pin 1 | +IN — Positive input voltage (260-410 VDC) |
| Pin 2 | -IN — Negative input voltage / input return |
| Pin 3 | NC — Not connected (per datasheet ChiP pinout) |
| Pin 4 | NC — Not connected (per datasheet ChiP pinout) |
| Pin 5 | EN/UVLO — Enable / under-voltage lockout reference (per Vicor datasheet) |
| Pin 6 | +OUT — Positive output voltage (47.5 VDC nominal) |
| Pin 7 | -OUT — Negative output voltage / output return |
| Pin 8 | NC — Not connected (per datasheet ChiP pinout) |
| Pin 9 | BASEPLATE — Exposed thermal baseplate (chassis or heatsink connection) |
Typical Applications
BCM380P475T800A30 is suitable for 6 applications: Three-Phase PFC Front-End Distribution, Data Center 48 V Intermediate Bus Architecture, Renewable Energy Solar Inverter, Electric Vehicle Charging Station, Industrial Motor Drive Auxiliary Power, Telecom Central Office Power Plants.
Three-Phase PFC Front-End Distribution
Drops rectified 380 VDC from industrial three-phase PFC stages to a 47.5 V intermediate bus, providing 800 W of clean isolated power per module. The BCM380P475T800A30's 4.242 kVDC isolation eliminates the need for a separate isolation transformer, and parallel operation with automatic current sharing enables N+1 redundancy in manufacturing cell backplanes. Cooler operation than hard-switched alternatives also reduces heatsink volume in sealed industrial cabinets, where ambient temperature often exceeds 50 °C.
Recommended
Data Center 48 V Intermediate Bus Architecture
Provides the 380 V to 48 V transformation stage in hyperscale data center racks using Vicor's Factorized Power Architecture (FPA). Each BCM380P475T800A30 powers a 48 V distribution plane with 800 W capacity, and chaining multiple modules in parallel supports high-current GPU server shelves. The SAC topology runs above the AM-band, simplifying EMI filter design and reducing bulk capacitor count compared to silicon alternatives.
Recommended
Renewable Energy Solar Inverter
Converts high-voltage DC strings from photovoltaic inputs into a regulated 47.5 V bus feeding battery storage and grid-tie inverter sub-systems. The BCM380P475T800A30's wide 260-410 V input range tolerates solar-string voltage variation under changing irradiance, and 96% peak efficiency minimizes conversion losses critical to harvesting maximum energy. Parallel operation supports mid-sized commercial PV installations up to several kW per inverter shelf.
Recommended
Electric Vehicle Charging Station
Provides isolated DC-DC conversion from 380 V DC-link to 48 V battery communication and control rails in EV fast-charging stations. The BCM380P475T800A30's 4.242 kVDC isolation meets IEC 61851 and IEC 62368 safety requirements for human-accessible charging infrastructure. Its wide temperature range (-40°C to +125°C internal) supports outdoor cabinet deployments without active cooling derating.
Recommended
Industrial Motor Drive Auxiliary Power
Supplies isolated auxiliary power for gate drivers, sensor circuits, and control logic in 380 V industrial motor drives and robotics. The BCM380P475T800A30 replaces bulky line-frequency transformers with a compact ChiP module, freeing PCB real estate for higher-density motor-control functions. Its high efficiency reduces thermal load in sealed IP65 motor housings, extending the lifetime of electrolytic capacitors and electrolytic-bearing sub-systems.
Recommended
Telecom Central Office Power Plants
Forms the high-voltage to intermediate-bus stage in -48 V telecom central office power systems fed from 380 VDC distribution plants. The BCM380P475T800A30's high isolation voltage and UL/IEC agency approvals comply with GR-1089 and NEBS standards, while parallel capability supports the redundancy requirements of telecommunications-grade power systems. The exposed-baseplate ChiP package enables cold-plate mounting in sealed outdoor cabinets.
Recommended
Recommended Products Summary
Engineering reference data for BCM380P475T800A30 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BCM384P120T800AC0 | BCM380P475T800A00 | DCM24AP150T320A50 | DCM24AP120T320A50 | VHB350-D24-S24 |
|---|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | 9-pin ChiP through-hole | 9-pin ChiP through-hole | 9-pin ChiP through-hole | DCM through-hole module | DCM through-hole module | Vicor half-brick through-hole |
| Topology | BCM (SAC fixed-ratio, isolated) | BCM (SAC fixed-ratio, isolated) | BCM (SAC fixed-ratio, isolated) | DCM regulated isolated | DCM regulated isolated | Regulated isolated DC-DC (half-brick) |
| Input Voltage Range | 260-410 VDC | BCM384 series input range (Vicor) | 260-410 VDC | 18-36 VDC (24 V nominal) | 18-36 VDC (24 V nominal) | 350 VDC nominal |
| Output Voltage | 47.5 VDC | BCM384 series output (Vicor) | 47.5 VDC | 15 VDC | 12 VDC | 24 VDC |
| Output Power | 800 W | 800 W | 800 W | 320 W | 320 W | 350 W |
| Output Current | 16.9 A | BCM384 series output current (Vicor) | 16.9 A | 21.3 A | 26.7 A | 14.6 A |
| Operating Temperature | -40 °C to +125 °C internal (T-Grade) | -40 °C to +125 °C internal | -40 °C to +125 °C internal | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +100 °C typical |
Key Differentiators
- Highest efficiency in 380V-to-48V class (vs DCM24AP150T320A50)
- Higher continuous output power (vs VHB350-D24-S24)
- Wider input voltage range (260-410V) for transients (vs DCM24AP150T320A50 (18-36 V input))
Design Notes
Estimated: at full 800 W output and 96.5% typical efficiency, the BCM380P475T800A30 dissipates roughly 29 W internally. With the ChiP baseplate thermal resistance of approximately 1.0 °C/W (per Vicor ChiP datasheet family), this yields a ~29 °C junction-to-baseplate rise above a properly attached cold plate. Cold-plate or heatsink mounting with thermal interface material (TIM) is strongly recommended for full-power operation; convective-only cooling is typically insufficient at 800 W continuous load.
Provide a low-impedance input-side bulk capacitor bank of 10-20 µF X7R per module close to the +IN/-IN pins to handle the BCM's reflected ripple current. Place Y-capacitors across the isolation barrier for EMI suppression and to meet IEC 62368 ground-leakage requirements. Keep primary and secondary PCB traces physically separated by at least 6 mm of clearance to preserve the 4.242 kVDC isolation rating.
When paralleling BCM380P475T800A30 modules for higher output current or N+1 redundancy, no external current-sharing circuitry is required—the SAC topology droops naturally and modules synchronize within a few nanoseconds. Recommended practice per Vicor datasheets is to keep input and output PCB traces symmetrical within each parallel module's path length to avoid thermal imbalance. Always size the upstream source for the combined worst-case inrush current at startup, which can momentarily exceed 1.5x steady-state input current.
Do not connect the BCM380P475T800A30's exposed baseplate to either input or output return without proper isolation analysis, as this can defeat the 4.242 kVDC rating. Also note that this product's output voltage is fixed by K-factor (1/8) and does not regulate against line or load variations; downstream DCM or PI31xx/PI33xx converters are required if regulation is needed. Avoid hot-plugging under load without precharge circuitry—this can cause input-side connector arcing and module damage.
Compliance Information
RoHS compliant and lead-free per distributor listings. AEC-Q100 not applicable (industrial/grid voltage class). Agency approvals UL 60950, IEC 60950/62368 per Vicor datasheet, but reach/halogen/conflict-minerals not explicitly listed in the provided data.
