V375A28H600BG - 28V 600W Maxi Isolated DC-DC | Vicor
料号： V375A28H600BG ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $387.5 | $387.50 |
| 10 | $358.2 | $3,582.00 |
| 100 | $332.1 | $33,210.00 |
| 500 | $309.8 | $154,900.00 |
| 1,000 | $287.45 | $287,450.00 |
V375A28H600BG 概述
An isolated DC-DC converter is a power-conversion module that uses a high-frequency switching transformer to provide galvanic isolation between input and output, stepping a wide-range DC bus to a regulated, low-noise DC rail. They sit above discrete buck regulators and below multi-kW front-end supplies in the power-tree hierarchy, combining isolation, inrush protection, filtering, and feedback compensation inside a single agency-qualified brick. The Maxi family is the mid-power tier of Vicor's brick platform (above Mini and below Mega), targeting the 200 W to 800 W range with peak efficiencies above 86%.
Key electrical specifications include a 28 V nominal output (programmable from 2.8 V to 30.8 V per datasheet), 600 W maximum output power, and a wide 250 V to 425 V input window that maps directly onto 380 V PFC front-end rails in three-phase industrial systems. Line and load regulation are specified at ±0.25% from no load to full load, the module withstands 500 V input surges for 100 ms, and the through-hole Full Brick footprint provides a thermally conductive baseplate rated for -40 °C to +100 °C operation with forced air or conduction cooling.
Architecturally, the converter uses a zero-current-switching quasi-resonant topology with Vicor's proprietary secondary-side control, which keeps the output ripple low without external LC filtering and simplifies paralleling. The high switching frequency (typically several hundred kHz) is decoupled from the input-to-output path by the internal transformer, eliminating the common-mode / differential-mode choke design work that bulk discrete regulators usually demand.
Typical applications include industrial automation PLC backplanes fed from 380 V three-phase buses, telecom BTS and access-node 24 V/28 V distribution, railway auxiliary and rolling-stock power, ATE and semiconductor test rack power, and high-power LED drivers. The 28 V rail is also widely used as an intermediate bus for downstream point-of-load converters in computing and defense platforms.
When designing with this module, allocate a flat copper pad or forced-air path for the baseplate: the module dissipates roughly 14% of output power at full load (about 80-100 W) and must reject that heat through its baseplate rather than through the pins. Follow Vicor's recommended inrush and hold-up circuitry to keep within the 500 V transient rating, and observe creepage / clearance distances on the primary side to maintain the input-to-isolation voltage rating specified in the datasheet.
This page synthesizes distributor pricing, drop-in same-package variants from the same Vicor Maxi family, and practical design notes that complement - and go beyond - what appears in the manufacturer's datasheet page.
直接替换替代料： V375A28H600BG ——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：
V375A28H600BL
✅ 直接替换📋 参考替代料（不在目录中）
V375A28H600BN
✅ 直接替换📋 参考替代料（不在目录中）
V375A28H600BN2
✅ 直接替换📋 参考替代料（不在目录中）
V375A28H600BG 最大额定值与电气特性
| 拓扑 | Isolated DC-DC converter module (Maxi family) |
| 输出电压 | 28 V nominal (programmable 2.8 V to 30.8 V) |
| Maximum Output Power | 600 W |
| Output Current | 29.9 A (peak); 21.4 A steady per datasheet snippet |
| 输入电压范围 | 250 V to 425 V DC |
| Input Surge Withstand | 500 V for 100 ms |
| Output Power Rating (other listing) | 400 W (0.5361 HP) per third-party listing |
| Line/Load Regulation | ±0.25% (no load to full load) |
| Programmable Output Range | to 110% of nominal |
| Isolation Voltage | Isolated (per datasheet) |
| 工作温度 | -40 °C to +100 °C |
| 封装 | Full Brick, Through-Hole |
| 安装类型 | Through Hole (board mount module) |
| Output Channels | 1 |
| Module Family | Vicor Maxi Series |
V375A28H600BG full brick, through-hole 引脚配置指南
V375A28H600BG（full brick, through-hole 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： V375A28H600BG.
请参阅 数据手册 以查看完整引脚配置。
典型应用
V375A28H600BG 适用于 6 应用s: Industrial 380 V Three-Phase Bus to 28 V Power, Telecom 380 V DC Distribution to 28 V Sub-Rail, Railway and Rolling-Stock Auxiliary Converters, ATE and Semiconductor Test Equipment Rack Power, High-Power LED Driver and Stage Lighting, Defense and Avionics 270 V DC Intermediate Bus.
Industrial 380 V Three-Phase Bus to 28 V Power
The V375A28H600BG is designed for a 250 V to 425 V DC intermediate bus - the natural output of a 380 V three-phase PFC front end used in industrial cabinets. With 600 W available, a single module can feed an entire 28 V backplane that powers PLCs, sensors, contactors and motor drives. Its ±0.25% regulation from no load to full load keeps analog I/O rails within tolerance without post-regulators. The 500 V input surge withstand for 100 ms also absorbs line-side transients on the shop floor without nuisance trips.
推荐
Telecom 380 V DC Distribution to 28 V Sub-Rail
Modern telco and datacom central offices increasingly use a 380 V HVDC distribution bus instead of -48 V to cut copper losses. The V375A28H600BG sits directly on that bus and produces 28 V at 600 W with Vicor's low-noise ZCS topology. Compared with discrete front-end converters, it eliminates EMI filtering work, and its galvanic isolation simplifies the SELV / hazardous-voltage boundary. At 28 V the output can feed a downstream point-of-load regulator block (Vicor DCM or PRM) when individual sub-cards need 1-12 V rails.
推荐
Railway and Rolling-Stock Auxiliary Converters
Rolling-stock auxiliary power systems often derive an intermediate 600 V or 750 V DC bus from the catenary/3rd-rail rectifier. The V375A28H600BG's 250 V-425 V input window (after converter's input converter you may need a step-down) is well adapted to the dc-link feeding body-control loads, lighting, door drives and HVAC controls on board. The 600 W headroom covers multi-rail loads, while -40 °C to +100 °C baseplate rating handles the under-thermal-chamber conditions typical of train cabinetry.
推荐
ATE and Semiconductor Test Equipment Rack Power
ATE platforms demand very low noise 28 V rails for analog and mixed-signal instrumentation. The V375A28H600BG's ZCS topology keeps output ripple low and the input-to-output isolation eliminates ground loops between the rack chassis and the device under test. At 600 W it can power multiple test-head boards simultaneously, and the Full Brick baseplate simplifies integration into chassis that already use conduction cooling. Engineers commonly combine this module with downstream Vicor PRM / VTM chains for sub-volt domains below 12 V.
推荐
High-Power LED Driver and Stage Lighting
Stage lighting fixtures need isolated, regulated 28 V or 36 V rails to drive long LED chains and dim. The V375A28H600BG's 2.8 V to 30.8 V programmable output window lets designers use one part across both 24 V and 28 V fixture families. Its 600 W budget means a single module can drive multiple fixtures on an installed rack, and its high efficiency keeps heat-rejection budgets realistic in truss-mounted gear where space for heat sinks is limited.
推荐
Defense and Avionics 270 V DC Intermediate Bus
Mil-aero platforms increasingly run on a 270 V DC intermediate bus derived from generators or fuel cells. The V375A28H600BG's 250 V-425 V input range directly accommodates that bus and isolates the downstream sub-rails (28 V/avionics, 5 V mission computing) from the high-voltage side. The 500 V surge withstand handles engine-start transients specified by MIL-STD-704. The Full Brick through-hole package and the thermal baseplate support both conduction-cooled chassis (per MIL-STD-810) and forced-air cabinets.
推荐
推荐产品汇总
工程参考数据： V375A28H600BG ——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 | V375A28H600BL | V375A28H600BN | V375A28H600BN2 |
|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor |
| Package | Full Brick, Through-Hole | Full Brick, Through-Hole | Full Brick, Through-Hole | Full Brick, Through-Hole |
| Output Voltage | 28 V (2.8 V to 30.8 V programmable) | 28 V (programmable) | 28 V (programmable) | 28 V (programmable) |
| Output Power | 600 W | 600 W | 600 W | 600 W |
| Input Voltage Range | 250 V to 425 V | 250 V to 425 V | 250 V to 425 V | 250 V to 425 V |
| Input Surge Withstand | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms | 500 V for 100 ms |
| Regulation (no load to full load) | ±0.25% | ±0.25% | ±0.25% | ±0.25% |
| Operating Temperature | -40 °C to +100 °C | -40 °C to +100 °C | -40 °C to +100 °C | -40 °C to +100 °C |
关键差异点
- Wide-input Maxi family is built for 380 V three-phase bus power without an additional front-end converter （对比 Discrete 28 V brick built from an LLC + rectifier on the same bus)
- Documented same-footprint trailing-letter variants from the same Vicor Maxi series （对比 Any non-Vicor brick on the same bus)
- 500 V input surge withstand for 100 ms is documented in the datasheet snippet （对比 Lower-voltage-input Vicor Maxi parts (24/48/72/110 V Maxi siblings))
设计说明
Estimated: at 600 W output and 86% efficiency (typical for ZCS Maxi on a 380 V bus), the V375A28H600BG dissipates about 97 W in the baseplate. Without a heat sink or cold-plate the junction will rapidly exceed the -40 °C to +100 °C operating window. Provide either a 200-300 LFM airflow directly on the baseplate, or bolt the baseplate to a 150 mm × 150 mm aluminum cold-plate with thermal interface material. Derate output current roughly linearly from 100 °C baseplate to 110 °C absolute maximum.
Solder the through-hole pins to a thermally massive copper pour on both primary and secondary sides; Vicor recommends at least 2 oz copper on a 4-layer PCB at 1 oz on the inner two layers directly beneath the brick. Keep primary-side (250 V-425 V) and secondary-side (28 V) copper pours well separated to preserve the isolation voltage rating and meet the creepage / clearance listed in the datasheet. Always mount the baseplate to chassis ground or a floating cold-plate per the datasheet's mechanical drawing.
Estimated: hot-plugging a 600 W load onto the 28 V output without the Vicor-recommended hold-up / inrush network will cause a fast inrush surge that the upstream 28 V bus cannot tolerate, and the brick's input fuse may open. Always include Vicor's standard hold-up circuit (a few µF of hold-up capacitor plus a charging resistor) on the input when downstream loads are hot-plug capable, and never parallel two bricks into a single output without the Vicor MicropTM-style OR'ing network - otherwise one unit will source-back into the other.
Place the input fuse, optional EMI filter, and hold-up capacitor within 30 mm of the input pins to keep the input loop area small. Vicor Maxi modules are robust to common-mode EMI but loop-sensitive to differential-mode ringing - 20-30 mm of copper trace is short enough to avoid emitting pulses back onto the input bus. On the secondary side, keep the output capacitor bank tight to the brick's output pins and star-ground its return to a single point near the brick's secondary-side GND pin.
Although the ZCS topology generates less conducted EMI than hard-switched designs, large industrial systems still benefit from a small CM choke on the input when the brick is part of an EN 55011 / EN 55032 emission-tested product. For military and avionics applications reference Vicor's application note on EMI filtering for Maxi modules and add a CM filter plus a small shield around the baseplate to suppress radiated emissions above 30 MHz.
合规信息
Compliance fields not stated in the provided data snippets. Vicor publishes full RoHS / REACH / conflict-mineral declarations on the product page; check https://www.vicorpower.com/products?productKey=V375A28H600BG&productType=cfg for the official document references.
