BCM6123TD1E5126T00 - 380V/47.5V 25.7A Isolated BCM Bus Converter | Vicor
MPN: BCM6123TD1E5126T00 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $168.5 | $168.50 |
| 10 | $158.2 | $1,582.00 |
| 100 | $145.75 | $14,575.00 |
| 500 | $134.4 | $67,200.00 |
| 1,000 | $122.1 | $122,100.00 |
BCM6123TD1E5126T00 Overview
A BCM (Bus Converter Module) is a fixed-ratio, high-isolation DC-DC converter used as a 'DC transformer' in a Factorized Power Architecture (FPA). Rather than regulating to a fixed output voltage, the BCM multiplies or divides the input by a fixed K factor (K = Vout/Vin = 47.5V / 380V ≈ 1:8 step-down), so downstream regulation is performed by a separate PRM (Pre-Regulator Module) or point-of-load converter. This architecture reduces switching losses, allows paralleling for multi-kW arrays, and provides galvanic isolation up to 4,242 VDC - a key advantage in HV battery, traction, and industrial systems.
Key differentiating features include OV/OC/UV/short-circuit and thermal protection built into the analog control interface, parallel operation for multi-kW arrays with automatic current sharing, and a 4,242 VDC isolation barrier that meets the creepage and clearance needs of 380V battery-link rails. The ChiP (Converter housed in Package) form factor integrates the magnetic and capacitive structures inside a single through-hole module, eliminating external magnetics and simplifying PCB layout.
Typical applications include 380V HV battery distribution in electric vehicles and industrial DC links, 48V/54V bus conversion from 380V traction rails, renewable-energy tie-in to higher-voltage DC microgrids, and any high-density point-of-load front-end where 4 kV isolation is mandatory. Designers typically pair the BCM with a Vicor PRM or downstream buck regulator to close the regulation loop.
A key design consideration: BCM outputs are unregulated, so output voltage tracks input. If the upstream 380V link swings between 260V and 410V, the 47.5V output will swing proportionally (47.5 × 260/380 to 47.5 × 410/380 = 32.5V to 51.3V). Closed-loop regulation must therefore be implemented downstream. Thermal derating is also critical at the high end of the input range.
Drop-in alternatives for BCM6123TD1E5126T00 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with BCM6123TD1E5126T00 (same form factor and footprint) — differing in Input Voltage Range, Package, Parallel Operation, Topology, Peak Efficiency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BCM6123TD1E5135T00
✅ Drop-In📋 Reference alternative (not in catalog)
BCM6123TD1E5117T00
✅ Drop-In📋 Reference alternative (not in catalog)
BCM6123TD1E2663T00
✅ Drop-In📋 Reference alternative (not in catalog)
BCM6123TD1E5126T01
✅ Drop-In✓ In Stock
$130.25 / Unit
View Datasheet →BCM6123TD1E5126T00 Maximum Ratings & Electrical Characteristics
| Topology | Sine Amplitude Converter (SAC), fixed-ratio isolated |
| Input Voltage Range | 260 V to 410 V (380 V nominal) |
| Output Voltage (Nominal) | 47.5 V (fixed K-factor ≈ 1:8 step-down) |
| Continuous Output Current | 25.7 A |
| Peak Efficiency | 97.9 % |
| Power Density | 1876 W/in³ |
| Isolation Voltage | 4242 VDC |
| Throughput Power (approx.) | ~1220 W |
| Package | BCM6123 through-hole ChiP |
| Mounting Type | Through Hole |
| Control Interface | Analog |
| Parallel Operation | Yes, for multi-kW arrays |
| Protections | OV, OC, UV, short-circuit, thermal shutdown |
| Output Regulation | Unregulated (fixed K factor) |
BCM6123TD1E5126T00 bcm6123 through-hole chip Pin Configuration Guide
Pin configuration for BCM6123TD1E5126T00 (bcm6123 through-hole chip package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for BCM6123TD1E5126T00.
Refer to the datasheet for full pin configuration.
Typical Applications
BCM6123TD1E5126T00 is suitable for 6 applications: EV Traction Auxiliary HV-DC-DC Stage, Industrial 380V DC Microgrid Tie-In, Renewable Energy HV Tie-In, High-Density Server / Datacenter HV Front-End, Aerospace HV Power Distribution, Robotics & Heavy-Machinery HV Link.
EV Traction Auxiliary HV-DC-DC Stage
The BCM6123TD1E5126T00 is used as the isolated HV-to-LV front-end for EV traction auxiliary rails fed from a 380V battery link. Its 4,242 VDC isolation satisfies the creepage and clearance required by 380V automotive systems, and the 97.9% peak efficiency keeps conduction losses minimal on the traction inverter's auxiliary 48V bus. The ChiP through-hole package drops directly onto a HV bus PCB and parallel operation supports multi-kW arrays for higher-power zonal architectures. Unlike a discrete 380V buck, the integrated ChiP eliminates external magnetics and reduces BOM count for high-volume EV power designs.
Recommended
Industrial 380V DC Microgrid Tie-In
In 380V industrial DC microgrids the BCM6123TD1E5126T00 provides isolation and step-down to a 47.5V distribution bus, which then feeds downstream POL converters for 24V, 12V or 5V loads. The 1:8 K factor is well-matched to 380V nominal plant DC, and the 4,242 VDC isolation simplifies safety compliance for industrial cabinets. With 25.7A continuous output (≈1.22 kW) and parallel capability for multi-kW arrays, the BCM6123TD1E5126T00 is well-suited to factory robotics, motor drives, and heavy-machinery DC links where HV isolation is mandatory.
Recommended
Renewable Energy HV Tie-In
Solar or wind inverters with 380V DC bus outputs use the BCM6123TD1E5126T00 to derive an isolated 47.5V rail for battery storage and low-voltage control electronics. The 97.9% peak efficiency minimizes the converter's share of the renewable plant's overall losses, and the 1876 W/in³ power density enables compact inverter cabinets. The 260-410V input range tolerates the wide voltage swing typical of renewable sources, while 4,242 VDC isolation protects downstream battery-management and monitoring circuits from HV faults.
Recommended
High-Density Server / Datacenter HV Front-End
The BCM6123TD1E5126T00 serves as the isolated HV-to-LV front-end in 380V datacenter distribution architectures (such as 400V HVDC bus designs). Its 97.9% peak efficiency reduces cooling load in dense server racks, and 1876 W/in³ density frees PCB space for downstream 48V VRMs. The ChiP package also parallel-outputs into multi-kW shelves for hyperscale compute power shelves. Downstream regulation is typically handled by a Vicor PRM or buck converter delivering a tightly regulated 48V rail.
Recommended
Aerospace HV Power Distribution
In aerospace HV distribution systems (more-electric aircraft, eVTOL, UAV propulsion) the BCM6123TD1E5126T00 converts a 380V HV bus down to a 47.5V rail for avionics, actuation and lighting loads. The 4,242 VDC isolation is critical for fault containment, and 1876 W/in³ density minimizes weight and volume - both at a premium in airborne platforms. The wide 260-410V input range accommodates HV battery transients during takeoff/climb, and 97.9% efficiency limits thermal dissipation in sealed avionics bays.
Recommended
Robotics & Heavy-Machinery HV Link
Industrial robots and heavy machinery increasingly use 380V DC distribution for servo drives and actuators. The BCM6123TD1E5126T00 converts the HV bus to 47.5V for low-voltage control electronics, sensors and safety circuits. The 4,242 VDC isolation prevents ground loops between HV and LV domains, and the through-hole ChiP package survives high-vibration factory environments. With parallel operation supporting multi-kW arrays, a single BCM family can scale from a 1.2 kW robot cell to a 5-10 kW press line.
Recommended
Recommended Products Summary
Engineering reference data for BCM6123TD1E5126T00 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BCM6123TD1E5135T00 | BCM6123TD1E5117T00 | BCM6123TD1E2663T00 | BCM6123TD1E5126T01 |
|---|---|---|---|---|---|
| Package | BCM6123 through-hole ChiP | BCM6123 through-hole ChiP - same | BCM6123 through-hole ChiP - same | BCM6123 through-hole ChiP - same | BCM6123 through-hole ChiP - same |
| Brand | Vicor | Vicor - same | Vicor - same | Vicor - same | Vicor - same |
| Input Voltage Range | 260-410 V (380 V nominal) | 260-410 V (380 V nominal) | 260-410 V (380 V nominal) | 260-410 V (380 V nominal) | 260-410 V (380 V nominal) |
| Output Voltage (nominal) | 47.5 V | ≈51.3 V (K≈1:7.4) | ≈36.3 V (K≈1:10.5) | ≈165.6 V (K≈1:2.3) | 47.5 V |
| Output Current (continuous) | 25.7 A | 25.7 A (family rating) | 25.7 A (family rating) | 25.7 A (family rating) | 25.7 A |
| Peak Efficiency | 97.9 % | 97.9 % | 97.9 % | 97.9 % | 97.9 % |
| Isolation Voltage | 4242 VDC | 4242 VDC | 4242 VDC | 4242 VDC | 4242 VDC |
| Control Interface | Analog | Analog | Analog | Analog | Analog |
Key Differentiators
- Highest power density in 380V-input bus converter class (vs Discrete 380V buck converters)
- 4,242 VDC reinforced isolation (vs Non-isolated HV buck converters)
- Multi-kW parallel capability with current sharing (vs Single-module BCM alternatives)
Design Notes
Estimated: at 380V nominal input, 47.5V output, and 25.7A load, throughput power is ~1220W. Because the BCM is unregulated, output voltage tracks the input proportionally: at the 260V minimum, output drops to ~32.5V; at the 410V maximum, output rises to ~51.3V. Closed-loop regulation must be provided downstream (PRM or buck regulator) when a tightly regulated rail is required.
At 97.9% peak efficiency, conduction loss is ~26W at 25.7A/47.5V throughput. The ChiP package must be mounted on a heatsink or thermal copper pour sized to Vicor's mechanical drawing; insufficient cooling will trigger the BCM's internal thermal shutdown. Avoid placing heat-sensitive analog circuits within 10mm of the BCM's top surface.
Do not assume the 47.5V output is regulated - it tracks input by K factor. Do not bypass the PRM or downstream regulator 'to save BOM cost', as this will pass HV transients directly to your LV load. Maintain the HV-side creepage and clearance specified in the BCM6123 datasheet around the through-hole pins.
Use Vicor's recommended PCB layout for the BCM6123 ChiP - HV and LV grounds must be kept separate, and the analog control signals should be routed away from the power pads. When paralleling multiple BCMs, keep inter-module signal-trace lengths symmetric to preserve current-share accuracy. The through-hole pin pads are also the primary thermal path; use thermal vias to inner copper planes.
Compliance Information
Compliance certifications not provided in the Verified Web Data. Refer to the Vicor BCM6123 family datasheet and product-page declaration for RoHS, REACH, and AEC-Q100 status. Engineers needing AEC-Q100 should request a Vicor ChiP automotive-grade variant.
