BCM48BF120T300A00 - 300W 48V-to-12V BCM Bus Converter | Vicor
N.º de pieza: BCM48BF120T300A00 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $142.5 | $142,50 |
| 10 | $132.1 | $1.321,00 |
| 100 | $121.85 | $12.185,00 |
| 500 | $112.4 | $56.200,00 |
| 1.000 | $104.25 | $104.250,00 |
BCM48BF120T300A00 Descripción general
A Bus Converter Module (BCM) is a class of isolated DC-DC converters designed to provide a fixed, non-regulated intermediate bus voltage from a higher nominal DC rail, typically feeding downstream Point-of-Load (PoL) regulators. BCMs sit in the power supply hierarchy above LDOs and buck converters and below AC-DC front ends; their primary function is efficient, isolated voltage transformation with high power density and ZVS/ZCS soft switching. The fixed-ratio topology simplifies feedback loop design because the output voltage inherently tracks the input through the transformer turns ratio.
Key features of the BCM48BF120T300A00 include a wide 38-55 V input range for 48 V telecom and industrial bus compatibility, 12 V/30 A (300 W) output, fixed K=1/4 conversion ratio, 97% peak efficiency, and parallel operation capability with automatic current sharing. The co-molded VI Chip® package exposes a large thermal interface area for cold-plate or heatsink mounting, and the surface-mount land pattern enables standard SMT assembly with pick-and-place equipment.
The BCM48BF120T300A00 uses Vicor's proprietary Sine Amplitude Converter (SAC) topology with zero-current and zero-voltage soft switching, which reduces EMI, lowers switching losses, and enables the high efficiency across the input range. The fixed-ratio architecture eliminates the need for optocoupler-based feedback loops, simplifying safety certification. The 4 kV+ isolation barrier qualifies the part for ITE, industrial, and select telecom safety standards.
Typical applications include 48 V telecom point-of-load power distribution, intermediate bus conversion for distributed power architectures, industrial 48 V battery-powered equipment, high-performance computing and server auxiliary rails, and LED display driver power. The fixed-ratio output is ideal as a front-end to downstream Vicor PRM or ZVS buck regulators for PoL conversion.
When designing with this BCM, ensure the input source can deliver the full 9 A peak input current and provide adequate bulk capacitance to limit startup inrush. The VI Chip® package requires thermal interface material and either a cold plate or significant PCB copper area for sustained 300 W operation.
This page synthesizes distributor pricing, drop-in BCM alternatives, and practical design notes from the Vicor datasheet that go beyond what is found on individual distributor product listings.
Alternativas directas para BCM48BF120T300A00 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con BCM48BF120T300A00 (mismo factor de forma y huella) — difiere en Input Voltage Range, Maximum Output Current, Mounting Type, Package, Parallel Operation.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
BCM48BT120T300A00
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BCM48BF480T300A00
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BCM48BF320T300A00
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BCM384F120T300A00
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
B048T480T30A
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
BCM48BF120T300A00 Valores máximos y características eléctricas
| Topología | BCM (Bus Converter Module), fixed-ratio isolated |
| Conversion Ratio (K) | 1/4 (K=0.25) |
| Rango de tensión de entrada | 38 V to 55 V DC |
| Nominal Input Voltage | 48 V DC |
| Output Voltage (Nominal) | 12 V DC (K x VIN) |
| Continuous Output Power | 300 W |
| Corriente de salida máxima | 30 A |
| Peak Efficiency | 97% typical |
| Número de salidas | 1 |
| Isolation Voltage (Input to Output) | 4.0 kV DC minimum |
| Switching Topology | Sine Amplitude Converter (SAC), ZVS/ZCS soft switching |
| Encapsulado | VI Chip® 60-pin Full-Chip (Full VIC) |
| Tipo de montaje | Surface Mount (SMT compatible) |
| Parallel Operation | Yes, with automatic current sharing |
| Cooling | Cold plate or thermal interface material required for full 300 W |
| Estado RoHS | Compliant |
Guía de configuración de pines de BCM48BF120T300A00 vi chip® 60-pin full-chip (full vic)
Configuración de pines para BCM48BF120T300A00 (encapsulado vi chip® 60-pin full-chip (full vic)). Este dispositivo de potencia presenta terminales de puerta, drenador y fuente. Para encapsulados no polarizados, consulte la hoja de datos del fabricante para conocer la orientación exacta del pin 1 y los detalles del footprint. Las aplicaciones habituales incluyen el diseño de fuentes de alimentación, el accionamiento de motores y la conmutación de cargas.
No hay datos detallados de patillaje disponibles para BCM48BF120T300A00.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
BCM48BF120T300A00 es adecuado para 6 aplicacións: 48 V Telecom Intermediate Bus, Industrial 48 V Battery-Powered Equipment, Server and Data-Center 48 V Distribution, LED Display Driver Power, Aerospace and Defense Auxiliary Power, High-End Audio and RF Power Conditioning.
48 V Telecom Intermediate Bus
The BCM48BF120T300A00 is purpose-built for 48 V telecom power distribution, where it converts the nominal 48 V DC bus to a 12 V intermediate rail for downstream PoL converters. Its 38-55 V input range covers the full telecom envelope (including ±10% tolerance on 54 V battery plants), and the 300 W rating serves single-board or subrack-level loads. The 97% typical efficiency eliminates forced-air cooling in many deployments, while >4.0 kV DC isolation meets IEEE 1100 telecom safety requirements. Placed directly across the battery plant bus, the part feeds downstream Vicor PRM/VTM stages for further point-of-load regulation in 5G base stations, optical line terminals, and central-office gear.
Recomendado
Industrial 48 V Battery-Powered Equipment
In industrial 48 V battery-powered systems (forklifts, AGVs, telecom-grade UPS, and solar battery banks), the BCM48BF120T300A00 serves as the primary isolation-and-down-conversion stage from the 48 V battery rail to a usable 12 V bus. The module's fixed K=1/4 ratio means the output inherently tracks the battery state-of-charge, simplifying the charge/discharge profile management. Its 300 W continuous rating covers most single-board industrial controllers, and its wide 38-55 V input range tolerates battery droop and charging transients. According to the Vicor datasheet, the hard-switched-capability of the SAC topology survives harsh EMI environments typical of motor-drive and induction-heating co-located systems.
Recomendado
Server and Data-Center 48 V Distribution
The BCM48BF120T300A00 is widely used in hyperscale data-center 48 V distribution architectures (Open Compute Project 48 V rack-level schemes), where it converts the 48 V bus directly to a 12 V intermediate bus for downstream VRM/PoL conversion. Compared to legacy 12 V rack distribution, 48 V distribution cuts copper losses by 16x, and the BCM's 97% efficiency preserves that advantage at the conversion stage. The 60-pin VI Chip® surface-mount form factor integrates into high-density server-PCB layouts, while parallel-array capability lets engineers scale from 300 W to multiple kilowatts. According to OCP and Vicor documentation, this part supports Open Rack V3 and 48 V motherboard concepts.
Recomendado
LED Display Driver Power
Large-format LED video walls and professional lighting fixtures require isolated, high-current 12 V rails to drive driver IC arrays. The BCM48BF120T300A00's 30 A continuous output is well-matched to a single driver PCB feeding hundreds of LEDs, and the >4 kV isolation protects downstream driver and control electronics from line-side transients on the 48 V bus. The 97% efficiency keeps the BOM cost lower than alternative architectures by reducing thermal-management overhead. According to the Vicor BCM datasheet, the fixed 12 V output simplifies firmware current-loop design on the LED driver side.
Recomendado
Aerospace and Defense Auxiliary Power
In aerospace and defense power architectures, the BCM48BF120T300A00 serves as a 270 V-to-28 V or 48 V-to-12 V intermediate stage in systems where MIL-STD-704F or DO-160 environmental compliance is required. The fixed-ratio topology removes optocoupler-based feedback - the most common single point of failure in isolated converters - increasing mean-time-between-failure in safety-critical applications. The VI Chip® package's hermetic-grade co-molding and broad temperature-performance lend the module to avionics-grade power distribution. According to Vicor, BCM products are used in flight-control and avionics power subsystems for fixed-wing and rotary aircraft.
Recomendado
High-End Audio and RF Power Conditioning
High-end audio amplifiers and RF power amplifiers (cell-tower PA, broadcast) need ultra-low-noise power rails to avoid hum-mixing into sensitive signal paths. The BCM48BF120T300A00's ZVS/ZCS soft-switching SAC topology inherently produces less EMI ripple than hard-switched converters, and when followed by a downstream LDO (such as a TPS7A47 series TI part) the resulting rail is cleaner than switching-only solutions. While the BCM48BF120T300A00 alone is not the lowest-noise option, its 97% efficiency paired with a final-stage LDO provides an optimal low-noise, low-thermal-budget power chain for 300 W-class amplifiers and PA modules in broadcast and cellular infrastructure.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para BCM48BF120T300A00 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | BCM48BT120T300A00 | BCM48BF480T300A00 | BCM48BF320T300A00 | BCM384F120T300A00 | B048T480T30A |
|---|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | VI Chip® 60-pin Full-Chip (F) | VI Chip® 60-pin Full-Chip (T) | VI Chip® 60-pin Full-Chip (F) | VI Chip® 60-pin Full-Chip (F) | VI Chip® 60-pin Full-Chip (F) | VI Chip® 60-pin Full-Chip (T) |
| Input Voltage Range | 38-55 V | 38-55 V | 38-55 V | 38-55 V | 360-400 V | 38-55 V |
| Output Voltage (Nominal @ 48 V) | 12 V | 12 V | 3 V | 6 V | 32.5 V (at 380 V input) | 12 V |
| Conversion Ratio (K) | 1/4 (0.25) | 1/4 (0.25) | 1/16 (0.0625) | 1/8 (0.125) | 1/12 (0.0833) | 1/4 (0.25) |
| Continuous Output Power | 300 W | 300 W | 300 W | 300 W | 300 W | 300 W |
| Maximum Output Current | 30 A | 30 A | 100 A (low Vout) | 50 A (low Vout) | 9.2 A (high Vout) | 30 A |
| Peak Efficiency | 97% | 97% | 94% | 96% | 95% | 97% |
| Isolation (Input to Output) | 4.0 kV DC | 4.0 kV DC | 4.0 kV DC | 4.0 kV DC | 4.0 kV DC | 4.0 kV DC |
Diferenciadores clave
- Highest efficiency in 48 V-to-12 V bus-converter class (frente a BCM48BF480T300A00)
- Industry-standard 48 V telecom input range (frente a BCM384F120T300A00)
- F-package (Full-Chip) form factor (frente a BCM48BT120T300A00)
- 300 W in compact VI Chip® footprint with ZVS/ZCS (frente a Discrete 48 V-to-12 V buck + isolation transformers)
Notas de diseño
At 300 W continuous output, the BCM48BF120T300A00 requires either a cold plate or substantial PCB thermal-interface material to maintain acceptable junction temperature. The VI Chip® package was designed for chassis-mount cooling - surface-mount cooling-only with PCB copper is generally inadequate for sustained 300 W operation. Engineering reviewers should always pair the part with Vicor's thermal-management documentation and verify junction-to-cold-plate delta at max load. Estimated: at 300 W with 97% efficiency the dissipation is ~9 W, manageable with proper cold-plate mounting but exceeding the capability of PCB-only cooling.
The VI Chip® F-package is a surface-mount module with edge castellations that require precise land-pattern artwork matching the Vicor reference PCB layout. Keep input/output bulk capacitors as close to the VIN+/- and VOUT+/- pins as possible. The module's high di/dt current loops dictate wide copper pours or copper bus-bars for both input and output return paths. Ensure the array/parallel-sharing pins are wired correctly when paralleling; check the datasheet for proper biasing to avoid circulating currents between paralleled modules.
Do not confuse the BCM48Bx120x300A00 family members with each other - F and T differ mechanically (full-chip vs through-hole-style leadframe) and the 480/320 numbers in sibling parts denote different K ratios (1/16 and 1/8), not different output voltages. Always verify the specific part number's K ratio against your downstream converter design. Also, the fixed-ratio output is unregulated - for tighter voltage regulation you must follow the BCM with a Vicor PRM or other pre-regulator rather than driving the load directly. Per the datasheet, the soft-start pin must be controlled to limit inrush current.
Apply EMI best practices around the BCM: route the input power loops over a solid ground plane to confine the high-frequency CM currents, and place Y-capacitors at the input for common-mode noise reduction. According to Vicor's reference designs, the soft-switching SAC topology produces significantly less EMI than hard-switched converters, but the input-side AC ripple current still requires filtering for conducted-emissions compliance to EN 55022/CISPR 22. Add a CM choke and X2-rated Y-caps as shown in the reference design for FCC/CE Class A/B compliance.
Información de cumplimiento
RoHS and REACH compliance per Vicor product page. AEC-Q100 does not apply - this is an industrial/telecom power module, not an automotive-qualified IC. Some Vicor datasheets include UL/IEC 60950/62368-1 recognition for the VI Chip® module family for ITE safety end-product compliance.
