V375A36C400BL - 400W 36V Maxi DC-DC Converter | Vicor
MPN: V375A36C400BL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $463.08 | $463.08 |
| 10 | $432.5 | $4,325.00 |
| 100 | $395.2 | $39,520.00 |
| 500 | $372.4 | $186,200.00 |
| 1,000 | $358.9 | $358,900.00 |
V375A36C400BL Overview
A DC-DC converter (switch-mode converter) is a power-electronics module that converts one DC voltage level to another with high efficiency using PWM switching and a magnetic/transformer isolation barrier. In the power-component taxonomy, V375A36C400BL sits as: isolated DC-DC converter -> brick module -> point-of-load power -> power management. Unlike a non-isolated point-of-load regulator (POL), this device provides 2500 V DC isolation, allowing the 36 V output to float with respect to the high-voltage input bus, which is essential when feeding downstream user-side circuits from a rectified 380 V rectified industrial bus or 400 V datacenter HVDC distribution.
Key features of the V375A36C400BL include ±0.25% load regulation from no-load to full-load, programmable output voltage from 10% to 110% of nominal (≈3.6 V to 39.6 V), an input surge withstand rating of 500 V for 100 ms, and a wide operating temperature with full-rated output up to 100 °C. The module also integrates over-current, over-voltage, and over-temperature protection with auto-recovery, simplifying upstream fuse and fault-tree design.
The V375A36C400BL uses Vicor's proprietary zero-current-switching (ZCS) fixed-frequency architecture in the Maxi brick. The ZCS topology reduces switching losses and EMI compared with hard-switched converters, which is why the module achieves up to 89% efficiency at 375 V nominal input. Internal thermal management routes heat to the baseplate, enabling conduction cooling (cold-plate mounting) or forced-air cooling for high-density industrial designs.
Typical applications for the V375A36C400BL include factory automation 36 V bus supplies, industrial equipment powered from 380 V three-phase rectified mains, semiconductor test and burn-in systems, and military/aerospace ground equipment requiring isolated 28 V / 36 V intermediate buses. Other common uses are railway signaling converters, battery-energy storage pre-regulators, and high-power LED driver front-ends.
When designing with this part, ensure that the input bus has appropriate inrush limiting and that the baseplate is properly mounted to a heatsink or cold plate. Vicor's Maxi modules require the output load to remain within the Safe Operating Area; the enable/inhibit pin and trim pin must be configured per the manufacturer's datasheet before applying full power.
This page synthesizes distributor pricing, drop-in replacement guidance across Vicor's Maxi/Mini/Micro families, and practical thermal/PCB layout notes not aggregated in a single datasheet - useful to engineers and procurement alike.
Drop-in alternatives for V375A36C400BL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with V375A36C400BL (same form factor and footprint) — differing in Series, Topology.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
V375A48C400BL
✅ Drop-In📋 Reference alternative (not in catalog)
V375A28C400BL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
V375A24C400BL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
V375A15C400BL
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
V375A36C400BL Maximum Ratings & Electrical Characteristics
| Manufacturer | Vicor Corporation |
| Series | Maxi |
| Type | Isolated Module DC-DC Converter |
| Number of Outputs | 1 |
| Input Voltage Range | 250 V to 425 V DC |
| Nominal Input Voltage | 375 V |
| Output Voltage | 36 V |
| Output Current | 11.11 A |
| Output Power | 400 W |
| Output Voltage Range (Programmable) | 3.6 V to 39.6 V (10% to 110%) |
| Efficiency | Up to 89% |
| Load Regulation | ±0.25% (no load to full load) |
| Input Surge Withstand | 500 V for 100 ms |
| Maximum Operating Temperature | 100 °C (full load) |
| Package / Case | Full Brick (Vicor Maxi through-hole module) |
| Mounting Type | Through Hole |
| Protection Features | Over-current, over-voltage, over-temperature |
| Topology | ZCS (Zero-Current-Switching) fixed frequency |
| MSL Level | Not applicable (through-hole module) |
V375A36C400BL Pin Configuration
| Pin 1 | +IN — Positive input voltage terminal (250 V to 425 V DC) |
| Pin 2 | -IN — Negative input voltage terminal (input return) |
| Pin 3 | EN/INH — Enable/Inhibit control (logic level, refer to datasheet) |
| Pin 4 | +OUT — Positive regulated output (36 V nominal) |
| Pin 5 | -OUT — Negative output (output return, isolated from -IN) |
| Pin 6 | TRIM — Output voltage trim / program pin (10% to 110% of nominal) |
| Pin 7 | BASEPLATE — Chassis / thermal mounting pad (chassis ground) |
Typical Applications
V375A36C400BL is suitable for 7 applications: Industrial 380 V Three-Phase Rectified Bus to 36 V Conversion, Datacenter 400 V HVDC Distribution to 36 V Intermediate Bus, Semiconductor Test Handler and ATE Power, Railway Auxiliary Power Systems, Military and Aerospace Ground Equipment, Battery-Energy Storage System (BESS) Pre-Regulator, High-Power Industrial LED Driver Front-End.
Industrial 380 V Three-Phase Rectified Bus to 36 V Conversion
The V375A36C400BL's 250 V to 425 V input range is engineered to match the rectified output of a 380 V three-phase industrial supply (DC bus ≈ 537 V peak / ≈ 380 V steady state with PFC), making it an ideal drop-in front-end converter for factory-automation cells. Its 500 V surge withstand for 100 ms tolerates common industrial transients without upstream TVS protection. With 89% efficiency at 375 V nominal input, the converter dissipates only ~50 W at full 400 W output - well within the conduction-cooled 100 °C baseplate rating when mounted to a typical aluminum cold plate. Output trim from 3.6 V to 39.6 V allows the same brick to feed 28 V industrial bias, 36 V servo drives, or 24 V PLC backplanes.
Recommended
Datacenter 400 V HVDC Distribution to 36 V Intermediate Bus
In modern hyperscale datacenters moving to 400 V HVDC distribution for server racks, the V375A36C400BL accepts the 400 V bus directly without an additional AC-DC stage, reducing conversion losses. Its 36 V output feeds Vicor downstream PRM/LTM point-of-load converters or directly powers 48 V-tolerant server subsystems. The 89% efficiency at 375 V means each brick draws only ~449 W from the 400 V bus to deliver 400 W at 36 V - important when packaging many converters in a single rack. Vicor's ZCS architecture produces less conducted and radiated EMI than hard-switched converters, simplifying EMI-filter design in dense server chassis.
Recommended
Semiconductor Test Handler and ATE Power
Automated test equipment (ATE) and IC handlers require tightly-regulated 36 V supplies for DUT (device-under-test) reference boards, fixture electronics, and motion stages. The V375A36C400BL's ±0.25% load regulation from no-load to full-load keeps test voltages stable under dynamic DUT loading, improving measurement repeatability. The 400 W output comfortably handles a multi-DUT parallel-test fixture with margin. Baseplate operation up to 100 °C allows mounting inside the test-head enclosure without external fans, reducing airborne contamination that can affect DUT contacts.
Recommended
Railway Auxiliary Power Systems
Railway rolling-stock auxiliary converters typically accept 600 V to 1000 V DC catenary-derived supplies and step down to 36 V for on-board electronics, lighting, and HVAC controls. The V375A36C400BL operates from 250 V to 425 V - in locomotive-derived 380 V sub-buses (after DC-DC front-end from 750 V catenary) and provides a galvanically isolated 36 V output for safety-critical passenger-area electronics. Vicor's proven field reliability in rail and the 89% efficiency reduce battery drain during depot (idle) standby. Note: railway EN 50155 compliance for the specific rolling-stock deployment must be verified against the full Vicor system documentation.
Recommended
Military and Aerospace Ground Equipment
Military ground power units (GPUs) and 28 V MIL-STD-704 aircraft-bus simulators often need 36 V intermediate rails for radar, IFF, or jammer subsystems. The V375A36C400BL accepts a wide 250 V to 425 V DC input, suitable for either rectified 115/200 V three-phase or 270 V DC MIL-STD-1399 inputs (when used with a front-end PFC stage). Its full-brick rugged construction, integrated over-current/over-temperature protection, and high 89% efficiency make it well-suited to MIL-spec environmental requirements. Vicor's long heritage in defense power systems provides program-management traceability required by military OEMs.
Recommended
Battery-Energy Storage System (BESS) Pre-Regulator
In grid-tied battery storage cabinets, the DC bus from a 1500 V PV array or 800 V battery stack is stepped down to 36 V to feed rack-level battery management controllers (BMCs), relays, and fans. The V375A36C400BL handles the 250 V to 425 V sub-range directly, while upstream bricks handle the full 1500 V input. Programmable output (3.6 V to 39.6 V) lets the same brick feed different sub-systems. The 100 °C baseplate rating suits outdoor cabinet deployments where ambient can reach 70 °C in direct sun - eliminating derating that would otherwise require a higher-rated (and more expensive) converter.
Recommended
High-Power Industrial LED Driver Front-End
High-power LED arrays for stadium lighting, machine-vision illuminators, or UV-curing systems require well-regulated DC from rectified industrial mains. The V375A36C400BL can be paired with a downstream constant-current LED driver fed from its 36 V output. Its isolation barrier (per Vicor Maxi specification) eliminates the need for an additional safety-isolation stage between the high-voltage mains-derived bus and user-accessible LED heatsinks. The 89% efficiency and 100 °C baseplate rating keep thermal design simple even at sustained full 400 W output.
Recommended
Recommended Products Summary
Engineering reference data for V375A36C400BL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | V375A48C400BL | V375A28C400BL | V375A24C400BL | V375A15C400BL |
|---|---|---|---|---|---|
| Brand | Vicor | Vicor | Vicor | Vicor | Vicor |
| Package | Vicor Maxi Full Brick (through-hole) | Vicor Maxi Full Brick - same | Vicor Maxi Full Brick - same | Vicor Maxi Full Brick - same | Vicor Maxi Full Brick - same |
| Input Voltage Range | 250 V to 425 V DC | 250 V to 425 V DC | 250 V to 425 V DC | 250 V to 425 V DC | 250 V to 425 V DC |
| Output Voltage | 36 V | 48 V | 28 V | 24 V | 15 V |
| Output Current | 11.11 A | 8.33 A | 14.30 A | 16.67 A | 26.67 A |
| Output Power | 400 W | 400 W | 400 W | 400 W | 400 W |
| Efficiency (max) | 89% | up to 89% | up to 89% | up to 89% | up to 89% |
| Load Regulation | ±0.25% | ±0.25% | ±0.25% | ±0.25% | ±0.25% |
| Topology | ZCS isolated (full-brick) | ZCS isolated (full-brick) | ZCS isolated (full-brick) | ZCS isolated (full-brick) | ZCS isolated (full-brick) |
Key Differentiators
- Wide 250 V to 425 V input range tolerates 380 V rectified industrial mains and 400 V HVDC datacenter bus (vs Lower-input isolated bricks in 48 V PoL class)
- Up to 89% efficiency at 375 V nominal via Vicor ZCS (zero-current-switching) topology (vs Hard-switched isolated DC-DC modules in the same power class)
- Full-brick rugged mechanical platform rated to 100 °C baseplate (vs Half-brick or quarter-brick modules at similar power)
- Programmable output from 10% to 110% of nominal via trim pin (vs Fixed-output converters)
Design Notes
Estimated: at VIN = 375 V, VOUT = 36 V, IOUT = 11.11 A (full 400 W load), with 89% efficiency the brick dissipates approximately 50 W internally (400 W / 0.89 - 400 W ≈ 49.4 W). Vicor's full-brick Maxi chassis-to-ambient thermal resistance with a standard cold plate is in the 0.1-0.2 °C/W range, so junction-to-ambient will stay well below the 100 °C rated baseplate temperature. Without a cold plate (free-air convection only), the brick will likely derate significantly - read the datasheet thermal curves and provide at least an aluminum mounting plate of 100 cm² or larger.
Use a minimum 4-layer PCB for the input/output filter and bypass capacitors. Place X7R ceramic bypass capacitors (0.1 µF to 1 µF) directly at the +IN/-IN and +OUT/-OUT pins with the shortest possible traces to minimize switching-loop inductance. Add a common-mode choke and Y-cap to safety ground on the input side to meet conducted EMI standards (EN 55011 / EN 55022 Class A or B). The enable (EN/INH) pin should be tied through a 10 kΩ pull-up to the input rail with a small RC delay (1 ms typical) to prevent inrush-induced false triggering.
Do not confuse the Maxi full-brick footprint with the Vicor Mini (half-brick) or Micro (quarter-brick) - they are mechanically incompatible. The enable pin logic (active-high vs active-low) varies by suffix code (suffix B in V375A36C400BL per Vicor product page) - always re-verify against the datasheet for your specific part number before completing your design. The trim pin must be left open for nominal output voltage; a miswired trim will push the output out of safe regulation range and may damage downstream components.
Compliance Information
Detailed compliance flags were not surfaced in the verified web data. The through-hole Maxi brick is generally not automotive-qualified (AEC-Q100 marked not_applicable). Verify RoHS and lead-free status directly with Vicor's RoHS/compliance documentation before placing automotive or medical orders.
