V375A36T400BL - 400W 36V Isolated DC-DC Converter | Vicor
MPN： V375A36T400BL ✓ 啟用中V375A36T400BL 概覽
An isolated DC-DC converter is a switched-mode power module that uses a high-frequency transformer to provide galvanic isolation between input and output while stepping a high-voltage DC bus down to a lower voltage rail. Within the power-conversion hierarchy, isolated converters sit alongside non-isolated POL regulators and AC-DC front ends, and they are typically deployed after PFC and bulk-capacitor stages in distributed-power architectures. The V375A36T400BL belongs to Vicor's Maxi family, which is known for high efficiency, low noise, and rugged operation in industrial, military, and aerospace power systems.
Key specifications include an output current of 11.1A (400W total), an input range of 250V to 425V DC (375V nominal), an input-surge withstand of 500V for 100ms, output regulation of ±0.35% no-load to full-load, and high-speed MOSFET switching topology. The module also features an isolated output, programmable output trim, and a typical conversion efficiency in the mid-80% to low-90% range depending on operating point. The through-hole package provides robust mechanical mounting for chassis and PCB backplane designs in harsh environments.
The V375A36T400BL uses Vicor's proprietary Sine Amplitude Converter (SAC) topology or a similar high-frequency resonant topology to achieve soft switching and high power density. This topology minimizes switching losses and reduces EMI relative to hard-switched PWM converters, making the module suitable for noise-sensitive analog and RF subsystems sharing the same chassis.
Typical applications include industrial 380V rectified-bus distribution, railway rolling-stock auxiliary power, high-voltage battery energy storage, military C4ISR platforms, and telecom -48V/-60V central-office equipment. The wide 250-425V input range makes the module well suited to nominal 300V, 330V, or 400V intermediate bus voltages generated from three-phase PFC front ends.
When integrating this module, ensure the upstream bulk capacitance meets the input-ripple and inrush requirements specified in the datasheet, and verify that the host PCB thermal design keeps the module baseplate below its maximum operating temperature.
This page synthesizes distributor stock and pricing, parametric alternatives, and practical thermal/PCB design notes not found in the standalone manufacturer datasheet.
直接替換替代品，適用於 V375A36T400BL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： V375A36T400BL （相同外形與佔位） — 差異在於 Series, Topology.
V375A36C400BL
✅ 直接替換聯絡詢價
查看資料表 →V375A12T400BL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
V375A24T400BL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
V375A48T400BL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
V375A15T400BL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
V375A36T400BL 最大額定值與電氣特性
| Manufacturer | Vicor Corporation |
| Series | Maxi (375V Input Family) |
| Module Type | Isolated DC-DC Converter Module |
| 拓撲 | High-frequency switching (high-speed MOSFETs) |
| 輸出數量 | 1 |
| Output Voltage (Nominal) | 36 V |
| 輸出電流 (最大) | 11.1 A |
| Output Power (Max) | 400 W |
| Input Voltage (Min) | 250 V DC |
| Input Voltage (Max) | 425 V DC |
| Input Voltage (Nominal) | 375 V DC |
| Input Surge Withstand | 500 V for 100 ms |
| Output Voltage Range (Trim/Programmable) | up to 110% of nominal |
| Line/Load Regulation | ±0.25% no-load to full-load (per DigiChip summary) |
| Isolation | Isulated output |
| 安裝類型 | Through Hole |
| Package / Form Factor | Vicor Maxi brick (through-hole) |
| Efficiency (Typical) | Up to ~90-95% (varies with operating point) |
V375A36T400BL vicor maxi brick (through-hole) 腳位配置指南
V375A36T400BL（vicor maxi brick (through-hole) 封裝）的腳位配置。 此功率元件具有閘極、汲極與源極端子。對於非極性封裝，請參閱製造商資料表以取得確切的第 1 腳方向與佈局詳細資訊。常見應用包括電源設計、馬達驅動與負載切換。
無詳細腳位定義資料： V375A36T400BL.
請參閱 資料表 以查看完整腳位配置。
典型應用
V375A36T400BL 適用於 7 應用s: Industrial 380V Rectified-Bus Distribution, Railway Rolling-Stock Auxiliary Power, High-Voltage Battery Energy Storage Systems, Military / Aerospace C4ISR Platforms, Telecom Central-Office Power, Industrial Laser and Plasma Power, Test and Measurement Instrumentation.
Industrial 380V Rectified-Bus Distribution
The V375A36T400BL's 250-425V input range is purpose-built for rectified 3-phase industrial buses after PFC, making it ideal for factory-automation cabinets, drives, and process-control PLCs. With 36V at 11.1A, it powers 36V industrial stepper/servo motor drivers, valve actuators, and 24V-class industrial sensors through a downstream buck converter. The 500V/100ms surge withstand protects against load-dump and switching transients common in industrial substations. Its isolated output allows the 36V rail to be tied to chassis ground or floated, simplifying EMI and safety design inside large factory power cabinets.
推薦
Railway Rolling-Stock Auxiliary Power
The V375A36T400BL is widely deployed on railway rolling stock and trackside cabinets that operate from 600V/750V rectified bus voltages after the PFC and DC-link stage. The 36V output drives relay coils, lighting inverters, door-control electronics, and onboard diagnostics, while the 500V surge withstand meets EN 50155 transient requirements. Galvanic isolation lets the 36V rail be referenced to chassis, critical for traction systems where grounding topology is tightly controlled. A typical installation places this module behind a Vicor or third-party input EMI filter and a pre-charge / inrush-limiting circuit.
推薦
High-Voltage Battery Energy Storage Systems
In 400V-class battery energy storage systems (BESS) and solar inverters, the V375A36T400BL steps the high-voltage DC bus down to a 36V intermediate rail for downstream conversion to battery-cell voltages, monitoring electronics, and cooling fans. The 250-425V input tracks the typical BESS DC-link voltage during charge, discharge, and idle, while the 11.1A output delivers 400W of headroom for auxiliary loads. Isolation between the battery stack and the 36V rail is essential for service technician safety during field maintenance.
推薦
Military / Aerospace C4ISR Platforms
The V375A36T400BL's rugged through-hole Maxi brick package, high efficiency, and surge-withstand rating make it a strong fit for military and aerospace C4ISR, EW, and radar subsystems operating from 270V DC nominal or 400Hz rectified AC buses. The 36V output feeds RF power-amplifier rails, ruggedized displays, and signal-processing cards. Its isolated output simplifies EMI zoning in tightly packed, multi-domain enclosures. For flight-critical programs, screen the module against MIL-STD-704 and MIL-STD-810 before deployment.
推薦
Telecom Central-Office Power
In -48V/-60V telecom central offices, a 380V DC intermediate bus is increasingly used to feed isolated brick converters like the V375A36T400BL that produce 36V sub-rails for PoE midspans, RF power amplifiers, and base-station radio cards. The 36V rail can feed downstream POL converters or directly drive 36V-tolerant telecom ASICs. Isolation from the 380V bus is mandatory for safety and for separating noisy digital returns from clean RF grounds inside the same shelf.
推薦
Industrial Laser and Plasma Power
The V375A36T400BL's 400W output and 36V rail are well matched to diode-laser stacks, plasma generators, and induction-heating front ends used in industrial cutting, welding, and additive-manufacturing equipment. The 36V bus feeds laser-diode driver boards that regulate current through each emitter, while the isolated topology protects low-voltage control electronics from high-voltage noise generated by the laser driver. Surge withstand protects the module from the violent load transients characteristic of plasma-arc systems.
推薦
Test and Measurement Instrumentation
High-end benchtop and ATE test-and-measurement instruments (spectrum analyzers, signal generators, modular chassis like PXI/LXI) use 400W-class brick converters such as the V375A36T400BL to derive clean, isolated 36V rails from a universal 110-380V DC internal bus. The 36V rail feeds high-resolution ADC/DAC boards, FPGA DSP cards, and display subsystems that demand low-noise power. Isolation keeps noisy digital grounds separate from clean analog grounds, critical for measurement integrity at microvolt-level signal paths.
推薦
推薦產品摘要
工程參考資料，適用於 V375A36T400BL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | V375A36C400BL | V375A12T400BL | V375A24T400BL | V375A48T400BL | V375A15T400BL |
|---|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | Vicor Maxi brick (through-hole) | Vicor Maxi brick (SMD) | Vicor Maxi brick (through-hole) | Vicor Maxi brick (through-hole) | Vicor Maxi brick (through-hole) | Vicor Maxi brick (through-hole) |
| Input Voltage Range | 250V to 425V DC | 250V to 425V DC | 250V to 425V DC | 250V to 425V DC | 250V to 425V DC | 250V to 425V DC |
| Output Voltage (Nominal) | 36 V | 36 V | 12 V | 24 V | 48 V | 15 V |
| Output Current (Max) | 11.1 A | 11.1 A | 33.3 A | 16.7 A | 8.3 A | 26.7 A |
| Output Power (Max) | 400 W | 400 W | 400 W | 400 W | 400 W | 400 W |
| Input Surge Withstand | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | Through Hole | Through Hole |
| Isolation | Yes (isolated output) | Yes | Yes | Yes | Yes | Yes |
主要差異化特點
- True 400W output in the Vicor Maxi brick form factor (對比Lower-power Vicor Mini (200W) or Micro (100W) bricks)
- Wide 250-425V input designed for 380V rectified industrial bus (對比48V-input converters (e.g. POL modules))
- 500V/100ms input surge withstand (對比Lower-rated industrial converters (typically 400V/100ms))
設計說明
Estimated: at 400W output with ~88% efficiency, internal dissipation is roughly 55W. With a Vicor Maxi brick baseplate thermal resistance of approximately 1 C/W to a properly heatsunk chassis, the baseplate-to-ambient rise is ~55C, so the chassis must be sized to keep the baseplate below the datasheet maximum (typically 100C). Always mount the brick to an aluminum or copper heatsink with thermal compound and verify with a thermocouple in production.
Use a 4-layer PCB with at least 2oz copper on input and output power layers. Place input bulk capacitors (typically 1-2 x 2.2uF X7R ceramics + 33-100uF electrolytic) within 0.5 inch of the Vin+ and Vin- pins. The +Sense and -Sense traces must be routed as a Kelvin pair to the output capacitors, not shared with power-return traces, or load regulation will degrade below the ±0.25% datasheet figure.
Do not exceed 425V continuous or 500V transient on the input - the input capacitors and MOSFETs have no further margin. Always populate the recommended inrush-limiting NTC or active circuit at turn-on, otherwise the bulk-cap charging current can trip upstream protection. Leave the Gate-In and Gate-Out pins open unless you are synchronizing multiple bricks for parallel operation; accidental termination can cause instability.
合規資訊
RoHS, REACH, lead-free, halogen-free, and conflict-mineral status were not present in the verified web data summary. Vicor Maxi-family bricks are typically RoHS-compliant and lead-free per Vicor's standard product policy; confirm against the latest manufacturer datasheet or certificate of conformance before procurement for regulated programs.
