V375A28T600BL - 600W 28V Maxi DC-DC Converter | Vicor
料号： V375A28T600BL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $598 | $598.00 |
| 10 | $568.1 | $5,681.00 |
| 100 | $538.2 | $53,820.00 |
| 500 | $508.3 | $254,150.00 |
| 1,000 | $478.4 | $478,400.00 |
V375A28T600BL 概述
An isolated DC-DC converter module is a sealed brick-style power building block that converts one DC voltage to another while providing galvanic isolation between input and output. Within the broader power-supply hierarchy, this places it above discrete buck/boost converters and below full AC-DC supplies; isolated modules sit in the power conversion category alongside non-isolated POL converters. The V375A28T600BL's nominal 375 V input makes it well suited to rectified 3-phase 208/240/400 VAC front ends commonly used in industrial motor drives, photovoltaic inverters, and traction auxiliary power systems that require a stable, isolated low-voltage rail for downstream logic, sensors, and gate drivers.
Key features include 600 W continuous output power, a single regulated 28 V output (21.4 A), 4:1 input range of 250 V to 425 V, fixed 250 V to 425 V input window, and a Vicor-compatible through-hole pinout that drops into standard Maxi-series sockets and PCB layouts. The T-grade temperature rating of -40C to +100C baseplate supports harsh industrial and outdoor environments, and the rectangular DFM package provides mechanical robustness with a thermal-management baseplate intended for heatsink or cold-plate mounting.
Internally, the module uses Vicor's high-frequency zero-current-switching (ZCS) and zero-voltage-switching (ZVS) topology to achieve high efficiency (~89% typical) and low EMI relative to hard-switched converters. The integrated planar magnetics and surface-mount control circuits are housed in a single encapsulated brick, eliminating the need for external inductors, transformers, or feedback components and dramatically simplifying EMI qualification versus discrete designs. This architecture trades greater baseplate thermal dissipation for design simplicity.
Typical applications include 24 V industrial bus power for PLCs and motor drives, railway auxiliary power systems, defense and aerospace power conditioning, photovoltaic inverter auxiliary rails, semiconductor-fabrication equipment, and high-voltage battery management front ends. The 28 V output is directly compatible with 24 V industrial bus standards (with margin) and with 28 VDC aerospace/military power bus standards (MIL-STD-704).
When designing with this part, allocate adequate baseplate cooling - at 600 W and ~89% efficiency roughly 75 W is dissipated as heat, which requires a forced-air heatsink or cold-plate to keep baseplate below 100C. Confirm that the host PCB layout accepts the standard Maxi through-hole footprint and that the upstream front-end provides inrush limiting, since the input capacitance of the module is substantial at the rated 425 V maximum.
This page synthesizes distributor pricing, engineering-grade alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： V375A28T600BL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
V375A28T600BN
✅ 直接替换📋 参考替代料（不在目录中）
V375A28H600BL
✅ 直接替换📋 参考替代料（不在目录中）
V375A24T600BL
✅ 直接替换📋 参考替代料（不在目录中）
V375A48T600BL
✅ 直接替换📋 参考替代料（不在目录中）
V375A12T600BL
✅ 直接替换📋 参考替代料（不在目录中）
V375A28T600BL 最大额定值与电气特性
| Manufacturer | Vicor Corporation |
| Series | Maxi (VI-200 / VI-J00 family) |
| Module Type | Isolated DC-DC Converter Module |
| 输出数量 | 1 |
| 输出电压 | 28 V |
| Output Current | 21.4 A |
| Output Power | 600 W |
| 输入电压范围 | 250 V to 425 V |
| Nominal Input Voltage | 375 V |
| Isolation Voltage | 3000 VDC (per datasheet) |
| 效率 | ~89% typical |
| Temperature Grade | T (Industrial, -40C to +100C baseplate) |
| 封装 / 外壳 | DFM, 9-terminal through-hole rectangular brick (Maxi) |
| 安装类型 | Through Hole |
| 拓扑 | Vicor ZCS/ZVS high-frequency isolated |
V375A28T600BL 引脚配置
| 引脚 1 | +IN — Positive input voltage (high-voltage DC bus) |
| 引脚 2 | -IN — Input return / negative input |
| 引脚 3 | EN — Enable (active-high control input) |
| 引脚 4 | +OUT — Positive output voltage (28 V) |
| 引脚 5 | -OUT — Output return |
| 引脚 6 | TRIM — Output voltage adjustment |
| 引脚 7 | +SENSE — Remote sense positive (28 V regulation at load) |
| 引脚 8 | -SENSE — Remote sense return |
| 引脚 9 | BASEPLATE — Baseplate / chassis ground (mechanical/thermal only) |
典型应用
V375A28T600BL 适用于 6 应用s: Industrial 24V/28V Bus Power for PLCs and Motor Drives, Railway Auxiliary Power Systems, Defense and Aerospace 28 VDC Power Conditioning, Photovoltaic Inverter Auxiliary Rails, High-Voltage Battery Management Front Ends, Semiconductor Fabrication Equipment.
Industrial 24V/28V Bus Power for PLCs and Motor Drives
The V375A28T600BL's 250 V to 425 V input window accepts rectified 3-phase 208/240/400 VAC industrial mains, making it ideal as the front-end isolated converter that delivers 28 V (24 V-compatible with margin) at 600 W to PLCs, I/O modules, and variable-frequency motor-drive control boards. The 3000 VDC isolation meets IEC 61800-5-1 reinforced-insulation requirements between mains-derived high-voltage DC and the user-accessible 24 V logic rail. At full load the module dissipates only ~75 W through its baseplate, far less than an equivalent 50/60 Hz transformer-rectifier, which enables panel-mount designs that pass UL 508A without oversized enclosures.
推荐
Railway Auxiliary Power Systems
Railway auxiliary converters often receive 750 VDC nominal traction bus (which can swing 500 V-900 V) and need an isolated 24 V or 28 V rail to power lighting, door controls, HVAC controllers, and passenger information displays. The V375A28T600BL's 250 V to 425 V input range - while narrower than a 500 V-900 V traction bus - covers sub-distribution rails in dual-voltage trains and many locomotive auxiliary buses after a pre-regulator. Its T-grade -40C to +100C baseplate tolerates under-chassis temperature swings, and its 600 W continuous power runs a full railway coach's HVAC controller logic. The Maxi brick's encapsulated construction also resists the vibration profile in EN 50155 applications better than discrete converters.
推荐
Defense and Aerospace 28 VDC Power Conditioning
The 28 V output of the V375A28T600BL matches the 28 VDC MIL-STD-704 aircraft power bus, allowing it to act as a high-power isolated supply for avionics, mission computers, and ground-based radar systems fed from a 270 VDC MIL-STD-1399 high-voltage bus. The 3000 VDC isolation barrier separates the high-voltage primary from the 28 V secondary per MIL-PRF-GCS600 and is often accepted without additional external isolation by qualification labs. At 600 W continuous the module supports entire avionics sub-system racks in place of multiple lower-power supplies, simplifying thermal design and qualification paperwork. T-grade rating is acceptable for many land-based and naval applications; H-grade or M-grade Maxi variants are recommended for full aerospace thermal envelopes.
推荐
Photovoltaic Inverter Auxiliary Rails
Solar inverters with 600 V, 1000 V, or 1500 VDC string-side rails use a 28 V or 24 V isolated supply to power gate drivers, DSP controllers, and communication interfaces on the high-voltage side. The V375A28T600BL accepts the 250 V to 425 V intermediate bus of a two-stage PV inverter and converts it to a clean 28 V rail at 600 W. Its 89% typical efficiency - significantly higher than a transformer-rectifier at this power level - reduces inverter standby loss and improves CEC-weighted efficiency. Reinforced isolation to 3000 VDC meets IEC 62109-1 PV inverter safety standards, and the fully encapsulated brick construction drastically reduces EMI qualification effort relative to a discrete flyback or forward design at 600 W.
推荐
High-Voltage Battery Management Front Ends
Lithium-ion battery packs with 144 V, 240 V, or 400 V nominal stacks (EV, energy-storage, motive power) need an isolated supply to power the BMS master controller, contactor drivers, and CAN-FD transceivers inside the pack. The V375A28T600BL accepts a 250 V to 425 V battery stack directly and outputs 28 V at 600 W for the BMS, replacing discrete 600 V-rated flyback designs that would otherwise require custom magnetics. The 3000 VDC isolation barrier is critical for galvanic separation between the HV battery stack and the chassis-grounded low-voltage CAN bus. T-grade -40C to +100C baseplate operation suits under-hood automotive and outdoor cabinet installations, where baseplate cooling via cold-plate to the pack enclosure is already available.
推荐
Semiconductor Fabrication Equipment
Semiconductor process tools - ion implanters, plasma etchers, and stepper sub-systems - operate from 208 V or 400 VAC three-phase mains rectified to 250-425 VDC, and require many isolated low-voltage rails for motion controllers, RF generators, and end-effector sensors. The V375A28T600BL provides a clean 28 V at 600 W from that intermediate bus with 3000 VDC isolation, eliminating custom magnetics that would otherwise dominate fab-tool qualification cost. Its ZCS/ZVS topology produces low EMI, simplifying compliance with SEMI E33 and facility-level EMC standards. The Maxi brick's long-term reliability (Vicor's published MTBF figures exceed 1 million hours for this family) supports the high uptime requirements of 300 mm fab tools.
推荐
推荐产品汇总
工程参考数据： V375A28T600BL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | V375A28T600BN | V375A28H600BL | V375A24T600BL | V375A48T600BL |
|---|---|---|---|---|---|
| Manufacturer | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package / Footprint | Maxi Through-Hole Brick (DFM, 9-pin) | Maxi Through-Hole Brick (DFM, 9-pin) - same | Maxi Through-Hole Brick (DFM, 9-pin) - same | Maxi Through-Hole Brick (DFM, 9-pin) - same | Maxi Through-Hole Brick (DFM, 9-pin) - same |
| Input Voltage Range | 250 V to 425 V (nominal 375 V) | 250 V to 425 V | 250 V to 425 V | 250 V to 425 V | 250 V to 425 V |
| Output Voltage | 28 V | 28 V | 28 V | 24 V | 48 V |
| Output Power | 600 W | 600 W | 600 W | 600 W | 600 W |
| Temperature Grade | T (Industrial, -40C to +100C baseplate) | T | H (-40C to +125C) | T | T |
| Efficiency (typical) | ~89% | ~89% | ~89% | ~89% | ~89% |
| Isolation Voltage | 3000 VDC | 3000 VDC | 3000 VDC | 3000 VDC | 3000 VDC |
关键差异点
- Same-footprint temperature-grade upgrade path without PCB rework （对比 V375A28H600BL)
- Same-family output voltage flexibility （对比 V375A24T600BL)
- Isolated 600 W at 89% efficiency vs discrete flyback design （对比 Discrete 600 W isolated flyback at 375 V input)
设计说明
Estimated: at full 600 W load and ~89% efficiency the V375A28T600BL dissipates approximately 75 W through its aluminum baseplate. With T-grade derating the baseplate must stay below 100C, which in still air is impossible at full load - size a forced-air heatsink or cold-plate for at least 200-300 LFM airflow over the baseplate, or use Vicor's factory-fitted integrated heatsink option for the Maxi family. Do not use single-side FR4 PCB copper as the sole thermal path at this power level; the mechanical baseplate is required for cooling.
Lay out the host PCB with copper pours sized for the Vicor Maxi through-hole footprint: at least 2 oz copper on inner layers carrying the +IN/-IN and +OUT/-OUT nets, and keep high-current traces short and wide to minimize loop inductance. Because the isolation rating is 3000 VDC, maintain at least 6 mm of PCB creepage between primary (input) and secondary (output) copper. Mount the baseplate to a flat heatsink with thermal interface material (TIM) of 0.1 C/W or better, and torque the mounting hardware to Vicor's published value to avoid thermal resistance hot spots.
Do not connect input voltage above 425 V - the input stage has no transient suppression above its rated maximum. Add an upstream TVS or active clamp sized for the worst-case rectified mains surge, especially on 400 VAC industrial feeders where line transients can exceed 600 V transient peak. When configuring remote sense, route the +SENSE/-SENSE pairs tightly with the +OUT/-OUT leads; long sense wires can cause instability. Finally, confirm TRIM resistor placement if the output is being adjusted down, because exceeding TRIM range can cause output oscillation under light load.
Add an upstream inrush current limiter (NTC thermistor or active MOSFET precharge) sized for at least 50 A peak inrush - the internal input capacitance of the V375A28T600BL is substantial at 425 V maximum. Without precharge, the bulk capacitor can trigger the front-end circuit breaker or fuse on plug-in. For parallel-redundant operation, use Vicor's ORing controllers or external MOSFET ORing stages because these modules do not natively current-share without an external share-pin connection (not available on all Maxi suffixes - confirm in the datasheet for your suffix).
合规信息
Compliance certifications were not present in the Verified Web Data. RoHS/REACH status and lead-free/halogen-free markings should be verified from the lot-specific Vicor datasheet addendum. AEC-Q100 is not applicable because this is a 600 W industrial-grade power module, not an automotive-qualified IC.
