V300B48C150BG - 150W 48V Isolated DC-DC Converter Module | Vicor
MPN: V300B48C150BG ✓ NakahandaV300B48C150BG Ulas
An isolated DC-DC converter module is a packaged power supply subsystem that combines an isolation transformer, control circuitry, and output rectification in a single chassis-mountable brick or module format. Isolated modules sit hierarchically below the broader class of board-mount DC-DC converters and above discrete switch-mode power supply designs; they are essential when system grounds must remain separate, when safety regulations demand reinforced isolation, or when a single high-voltage bus must be tapped to produce intermediate rails. Vicor Maxi-series parts in particular target high-density, high-efficiency (>90%) conversion with Vicor's proprietary zero-current-switching (ZCS) and zero-voltage-switching (ZVS) topologies.
Key features of the V300B48C150BG include ±0.4% set-point accuracy from no-load to full-load, input surge withstand of 400 V for 100 ms, programmable output voltage trim from approximately 10% to 110% of nominal, and Vicor's standard 9-DIP through-hole module form factor. Typical efficiency reaches approximately 88-90% at nominal line and full load, which substantially reduces thermal management overhead compared with discrete solutions in the same power range. The integrated output over-voltage, over-current, and over-temperature protections are internal and self-recovering.
Technically, the converter relies on a forward-topology primary stage feeding a high-frequency isolation transformer, with synchronous rectification on the secondary producing the 48 V low-impedance output. Because the module is a complete brick, designers can treat it as a black-box 48 V power source with predictable line/load regulation and no external compensation network beyond the input/output bulk capacitors. The unit operates over a typical -20 °C to +100 °C baseplate temperature range with adequate heatsinking.
Typical applications include industrial automation PLCs, 48 V telecom and PoE power distribution hubs, railway and traction auxiliary converters, defense and avionics power conditioning, and renewable-energy battery voltage step-down to 48 V intermediate rails. In each case the wide 375 Vdc input envelope accepts rectified 230 Vac or 277 Vac sources directly, eliminating a front-end PFC stage in many designs.
When integrating this module, observe Vicor's guidance on input fuse selection (a fast-acting high-voltage fuse is required for safety), output capacitor ESR limits, and baseplate grounding for EMI suppression. Avoid wiring input and output returns to a common chassis node unless the application explicitly tolerates ground-loop noise, since the module provides reinforced isolation in part design.
This page synthesizes distributor pricing, drop-in Vicor-family alternatives, and practical integration notes that complement rather than duplicate the manufacturer datasheet.
Mga alternatibo na pwedeng ilagay na V300B48C150BG — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
V300B48C150BL
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
V300B48C150BN
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
V300B48M150BG
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
V300C48C150BG
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
V300B48C150BG Mga Pinakamataas na Rating at Electrical Characteristics
| Topolohiya | Isolated DC-DC Converter Module |
| Bilang ng Outputs | 1 |
| Input Voltage (Min) | 180 V |
| Input Voltage (Max) | 375 V |
| Input Surge Withstand | 400 V for 100 ms |
| Output Voltage (Nominal) | 48 V |
| Output Voltage (Trim Range) | Approximately 10% to 110% of nominal |
| Output Kuru-kuryente (Mga Makapalabas) | 3.13 A |
| Output Power (Max) | 150 W |
| Line/Load Regulation | ±0.4% (no load to full load) |
| Efficiency (Typical) | Approximately 88-90% at nominal line and full load |
| Package / Mounting Type | 9-DIP Module, Through Hole |
| Protections | Over-Voltage, Over-Current, Over-Temperature (internal, self-recovering) |
Pin Configuration ng V300B48C150BG
| Pin 1 | +IN — Positive input voltage (180-375 Vdc) |
| Pin 2 | +IN — Positive input voltage (180-375 Vdc), parallel pin for high current |
| Pin 3 | -IN — Negative input voltage (input return) |
| Pin 4 | -IN — Negative input voltage (input return), parallel pin |
| Pin 5 | ON/OFF — Module enable (refer to Vicor datasheet for active polarity) |
| Pin 6 | TRIM — Output voltage trim (10% to 110% of nominal) |
| Pin 7 | +OUT — Positive output (48 V nominal) |
| Pin 8 | -OUT — Negative output (output return) |
| Pin 9 | BASEPLATE — Chassis/baseplate ground, thermal mounting surface |
Tipikal na mga Gamit
V300B48C150BG ay nararapat para sa 7 aplikasyons: Industrial PLC and Distributed Power Backplane, Telecom 48 V Power Distribution Hub, Railway and Traction Auxiliary Power, Defense and Avionics Power Conditioning, Renewable-Energy Battery Step-Down to 48 V Bus, Medical Imaging and Diagnostic Equipment, Datacenter 48 V Distribution Architecture.
Industrial PLC and Distributed Power Backplane
Why V300B48C150BG fits: The V300B48C150BG accepts 180-375 Vdc directly from rectified industrial mains, eliminating a front-end AC/DC stage for PLC backplanes. Its 150 W continuous output and 48 V 3.13 A capability feed downstream POL converters that power logic, analog, and motion sub-systems on a standard 24 V or 48 V industrial bus. How it is used and performance: Mounted on the DIN-rail or chassis backplane with a small high-voltage fuse on the +IN line; supplies 48 V to downstream brick or POL converters at typical efficiency 88-90% with ±0.4% regulation from no-load to full-load, which keeps PLC analog rails stable for sensor signal acquisition loops.
Inirekomenda
Telecom 48 V Power Distribution Hub
Why V300B48C150BG fits: Telecom central offices and remote radio heads run on standardized -48 V or +48 V distribution buses; the V300B48C150BG's 48 V output at 3.13 A draws cleanly from a 300 V rectified telecom front-end and re-presents the rail at telecom-grade isolation. Reinforced isolation between input and output is essential for the floating-bus architectures that PoE and small-cell base stations require. How it is used and performance: Connected between the high-voltage intermediate bus and the 48 V distribution frame, it sustains ±0.4% regulation across load transients, supporting switched-mode baseband and RF amplifier rails without adding common-mode noise.
Inirekomenda
Railway and Traction Auxiliary Power
Why V300B48C150BG fits: Rolling-stock auxiliary converters operate from 600 Vdc or 750 Vdc traction buses; the V300B48C150BG's 375 Vdc maximum input cannot accept these voltages directly but pairs naturally with a Vicor pre-stage or with battery/catenary-fed 300 V intermediate rails in light-rail and metro subsystems that step down to 48 V for passenger-information displays, door controls, and on-board communications. How it is used and performance: Delivered inside a fan-cooled tray or heatsink assembly, it provides the vibration-resistant, isolated 48 V supply demanded by EN 50155 railway standards when used within its rated thermal envelope.
Inirekomenda
Defense and Avionics Power Conditioning
Why V300B48C150BG fits: Military and avionics platforms frequently derive 270 Vdc or 300 Vdc intermediate buses from generators or rectified AC; the V300B48C150BG accepts 180-375 Vdc input and produces an isolated 48 V 150 W supply for radar processing, flight-control electronics, and electronic-countermeasure subsystems. Reinforced isolation and integrated OVP/OCP/OTP reduce secondary fault monitoring overhead in safety-critical systems. How it is used and performance: Qualified vicariously through Vicor Maxi-series heritage tests, the module is bolted to a chassis spreader plate that doubles as heatsink and EMI ground; it sustains regulated 48 V across MIL-STD-704 transient profiles when sized within rated headroom.
Inirekomenda
Renewable-Energy Battery Step-Down to 48 V Bus
Why V300B48C150BG fits: Solar and energy-storage inverters often produce 300-400 Vdc intermediate rails; the V300B48C150BG taps this directly to produce an isolated 48 V 150 W supply that feeds battery management boards, monitoring gateways, and auxiliary sub-systems without an extra isolation transformer. How it is used and performance: Mounted in the inverter cabinet with input fusing and pre-charge, it holds ±0.4% regulation across the generator's wide DC operating window, with surge withstand of 400 V for 100 ms to absorb inductive transients from the renewable source.
Inirekomenda
Medical Imaging and Diagnostic Equipment
Why V300B48C150BG fits: Medical imaging and diagnostic equipment demand reliable isolated power with strict leakage and patient-safety considerations; the V300B48C150BG's reinforced isolation and integrated protections suit ancillary subsystems such as patient-monitoring displays and imaging workstation power rails fed from a 300 Vdc medical-grade intermediate bus. How it is used and performance: Connected inside the medical chassis with documented creepage/clearance paths, it provides 88-90% efficient 48 V that downstream isolated DC-DC converters further transform to logic and analog rails; this architecture satisfies IEC 60601-1 isolation principles when cascaded appropriately within a 2 x MOPP design.
Inirekomenda
Datacenter 48 V Distribution Architecture
Why V300B48C150BG fits: Next-generation hyperscale datacenters are migrating to 48 V server racks to reduce distribution losses; the V300B48C150BG's 48 V 150 W output complements intermediate-bus converters for GPU blade clusters fed from 300 Vdc battery-backed distribution. Reinforced isolation meets the safety-barrier requirements of high-density rack deployments. How it is used and performance: Used as a high-side isolated brick feeding point-of-load regulators, it provides ±0.4% regulation that keeps GPU voltage rails within tolerance even under transient compute bursts, optimizing rack PUE compared with legacy 12 V architectures.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for V300B48C150BG — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | V300B48C150BL | V300B48C150BN | V300B48M150BG | V300C48C150BG |
|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | 9-DIP Module | 9-DIP Module (same) | 9-DIP Module (same) | 9-DIP Module (same) | 9-DIP Module (same) |
| Input Voltage Range | 180 V to 375 V | 180 V to 375 V | 180 V to 375 V | 180 V to 375 V | 180 V to 375 V |
| Output Voltage | 48 V | 48 V | 48 V | 48 V | 48 V |
| Output Power | 150 W | 150 W | 150 W | 150 W | 150 W |
| Regulation | ±0.4% | ±0.4% | ±0.4% | ±0.4% | ±0.4% |
| Mounting | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Special Option | Standard industrial grade (BG) | Rev. L factory option | Rev. N factory option | Military/extended grade (M) | C-grade factory option |
Pangunahing mga Pagkakaiba
- Wide 180-375 Vdc input envelope (kumpara saDiscrete forward converter at 150 W)
- Integrated reinforced isolation (kumpara saDiscrete transformer-based design)
- Vicor Maxi-series ecosystem (kumpara saGeneric third-party DC-DC module)
- Programmable output trim 10-110% (kumpara saFixed-output DC-DC brick)
Talaan ng Disenyo
Recommended: Install a fast-acting high-voltage fuse on the +IN line rated for the DC input voltage with an interrupt rating above the available fault current. Estimated: with a 375 Vdc bus and 150 W load, input current is approximately 0.44 A; size the fuse so it clears before internal MOSFET damage occurs. Vicor's Maxi-series datasheet recommends a specific fuse family because the brick's internal protection assumes an external clearing device. Pair the fuse with an inrush-limiting thermistor or active pre-charge to keep input-side stress within the module's 400 V 100 ms surge rating.
Estimated: at full 150 W load and approximately 88% efficiency, the module dissipates roughly 20 W internally as heat. With the baseplate bolted to an aluminum spreader plate, verify junction and baseplate temperatures stay inside the published derating curve (typical baseplate rating -20 °C to +100 °C). For continuous full-load operation, mount the baseplate to a chassis spreader with thermal interface material and design airflow adequate to keep the baseplate below 90 °C at worst-case ambient; otherwise the internal OTP will limit usable output power.
Recommended: Keep input and output loops physically separated and minimize loop area on the PCB to reduce common-mode and differential-mode EMI. The 9-DIP through-hole leads are positioned for low-inductance bussing; route +IN and -IN as a tight differential pair from the source connector, and likewise +OUT/-OUT from the output capacitor bank to the load. Connect the baseplate ground to chassis with a low-impedance bond (star washer or conductive gasket) to provide both thermal contact and a quiet EMI reference. Maintain the creepage and clearance distances stated by Vicor in the datasheet since this product works at hazardous voltage levels.
Critical: do not exceed 400 V on the input under any condition, including during adjacent power supply turn-on or capacitor inrush. Avoid connecting input and output returns to the same chassis node unless isolation is intentionally defeated; this product is reinforced-isolated. Do not assume pin 5 (ON/OFF) polarity is active-high without checking your specific Maxi-series datasheet revision - some Vicor generations are active-low. Finally, do not operate the module without the recommended minimum output capacitance stated in the datasheet, or output ripple and stability will degrade.
Impormasyon ng Pagsunod sa Kautusan
Detailed RoHS, REACH, and lead-free status for the V300B48C150BG are not present in the verified web data; designers should request the latest material declaration from Vicor. AEC-Q100 is not applicable for this through-hole DC-DC converter module since it is not an automotive-grade IC.
