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HomeProductsPower Supplies - (Board Mount)DC DC ConvertersVE-26Y-MY-F3
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VE-26Y-MY-F3 - Vicor Corporation

Manufacturer Part Number
VE-26Y-MY-F3
Manufacturer
Vicor
Allelco Part Number
98D-VE-26Y-MY-F3
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
39,360 pcs available, New & Original
Parts Description
DC DC CONVERTER 3.3V 33W
Package
Full Brick
Data sheet
VE-26Y-MY-F3.pdf

Environmental Information

Vicor REACH.pdf Vicor RoHS Cert.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 39360

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Specifications

VE-26Y-MY-F3 Tech Specifications
Vicor Corporation - VE-26Y-MY-F3 technical specifications, attributes, parameters and parts with similar specifications to Vicor Corporation - VE-26Y-MY-F3

Product Attribute Attribute Value
Manufacturer Vicor
Voltage - Output 3 -
Voltage - Output 2 -
Voltage - Output 1 3.3V
Voltage - Isolation 3 kV
Voltage - Input (Min) 200V
Voltage - Input (Max) 400V
Type Isolated Module
Size / Dimension 4.60" L x 1.86" W x 0.79" H (116.8mm x 47.2mm x 20.1mm)
Series VE-200™ (50W)
Power (Watts) 33 W
Product Attribute Attribute Value
Package / Case Full Brick
Package Bulk
Operating Temperature -55°C ~ 85°C
Number of Outputs 1
Mounting Type Through Hole
Features OCP, OTP, OVP, SCP
Efficiency 90%
Current - Output (Max) 33A
Base Product Number VE-26Y
Applications ITE (Commercial)

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8504.40.9580

Frequently Asked Questions(FAQ)

How does the VE-26Y-MY-F3 compare to other Vicor VE-200 series converters in terms of input voltage range and output current capability?
The VE-26Y-MY-F3 is a 50W member of the VE-200™ family, delivering 33A at 3.3V from a 200–400V input. While other members like the VE-26X or VE-26Z may support higher power densities or alternate output voltages (e.g., 12V or 5V), they generally share the same input range and isolation characteristics. However, only the VE-26Y variant achieves this specific 33A output within the 3.3V rail, making it uniquely suited for high-current, low-voltage applications such as FPGA or ASIC powering in industrial systems.
What are the key thermal and electrical derating considerations when operating the VE-26Y-MY-F3 near its maximum power rating?
At full 33W output with 90% efficiency, the VE-26Y-MY-F3 dissipates approximately 3.7W internally. Given its full brick package and through-hole mounting, adequate airflow or conduction to a heatsink is essential—especially above 60°C ambient. Derating curves in the datasheet indicate that continuous operation above 85°C case temperature requires reducing output power by 2% per °C above 70°C. Additionally, output current should not exceed 33A under sustained load unless input conditions and thermal management meet strict operational boundaries.
Can the VE-26Y-MY-F3 be used in redundant power architectures, and what isolation features support fault containment?
Yes, the VE-26Y-MY-F3 supports integration into redundant or parallel-redundant topologies due to its 3 kV galvanic isolation between input and output. This isolation prevents fault propagation across modules and enhances system reliability in telecom or datacom ITE applications. When paralleled, external OR-ing diodes or active control circuitry are typically required to manage current sharing; however, the module’s built-in overvoltage, overtemperature, and short-circuit protection help maintain stability during transient events.
What are the implications of using the VE-26Y-MY-F3 in a high-vibration environment, and how does its packaging affect mechanical robustness?
The VE-26Y-MY-F3 employs a full brick package with through-hole pins, which offers superior mechanical stability compared to surface-mount alternatives. Through-hole mounting provides strong solder joints resistant to vibration-induced stress, making it suitable for industrial-grade deployments. However, designers must ensure proper PCB layout with adequate creepage and clearance distances due to the 3 kV isolation requirement. MSL is not applicable, indicating no sensitivity to moisture during assembly, but long-term exposure in harsh environments may still require conformal coating if contamination risk exists.
How does the efficiency curve of the VE-26Y-MY-F3 behave across its operating input voltage range, and what impact does this have on system-level power budgeting?
The VE-26Y-MY-F3 maintains approximately 90% efficiency across its 200–400V input range, with minor dips near input extremes due to fixed switching frequencies and control loop dynamics. Peak efficiency typically occurs around 300–350V input, where semiconductor losses balance switching and conduction losses. For system architects, this means that worst-case input conditions (e.g., 200V or 400V) still yield usable efficiency, though margin must be preserved for transient loads and aging effects. Total system losses can thus be modeled conservatively at ≤10% of delivered power.
Is it possible to remotely monitor or control the VE-26Y-MY-F3 via digital interfaces, or does it rely solely on analog enable/disable functionality?
The VE-26Y-MY-F3 does not include native digital communication such as PMBus or CAN bus. Control is achieved through analog signals: an EN/UV pin enables/disables the converter based on threshold logic, and fault signals (OVP, OCP, OTP, SCP) are provided via dedicated pins. For telemetry, external circuits must interface these status outputs with a microcontroller. This architecture simplifies hardware but limits real-time diagnostics, requiring additional firmware development for health monitoring in smart systems.
What precautions should be taken when paralleling multiple VE-26Y-MY-F3 units to achieve higher output currents?
Parallel operation of VE-26Y-MY-F3 modules is feasible but demands careful attention to current balancing and transient response. Without internal droop or current-sharing algorithms, unequal load distribution can cause one unit to carry disproportionate current, triggering OCP protection or premature aging. Designers should use identical modules, match input/output traces, and implement external current-sense feedback with fast-acting OR-ing devices. Thermal symmetry is also critical—ensure uniform airflow or baseplate conduction to prevent hotspots.
How does the VE-26Y-MY-F3 comply with EMI standards in commercial ITE equipment, and what layout practices minimize radiated emissions?
As an isolated DC-DC converter rated for ITE applications, the VE-26Y-MY-F3 meets relevant EMC requirements when integrated properly. Its full brick design incorporates shielding and optimized PCB parasitics internally. To minimize EMI, keep input capacitors close to the module, use low-inductance ground planes, and route high di/dt traces away from sensitive signals. A minimum 10 mm creepage distance must be maintained around the primary-secondary clearance zones due to the 3 kV isolation barrier, aligning with UL 62368-1 spacing rules.
Can the VE-26Y-MY-F3 operate safely without an input fuse, and what are the risks associated with missing overcurrent protection upstream?
Although the VE-26Y-MY-F3 has built-in overcurrent protection (OCP), relying solely on it for primary-side fault mitigation is insufficient for safety compliance. Input fusing is strongly recommended to protect against catastrophic faults such as shorted inputs or wiring errors. Without upstream fuses, a persistent fault could damage the module or surrounding circuitry before OCP triggers. Fuse selection should consider both inrush current and prospective short-circuit current to avoid nuisance blowing while ensuring fail-safe operation.
What is the expected lifetime of the VE-26Y-MY-F3 under typical operating conditions, and how do ambient temperature and load cycling influence reliability?
Vicor specifies MTBF exceeding 1 million hours for the VE-26Y-MY-F3 under nominal loads and 55°C case temperature. However, derating above 70°C significantly reduces component lifespan due to accelerated capacitor and semiconductor wear. Load cycling introduces additional stress from thermal expansion mismatches in solder joints. To maximize reliability, maintain output below 30A continuously and avoid frequent on/off transitions; instead, use soft-start or ramping control if cycling is unavoidable.
How does the VE-26Y-MY-F3 handle inrush current during startup, and what external components are needed to limit peak input current?
The VE-26Y-MY-F3 does not include integrated soft-start; therefore, inrush current can reach several amps during bulk capacitor charging. An NTC thermistor or active precharge circuit is typically required to limit initial current draw, especially in systems with large input capacitance. This is critical when connecting to stiff supplies like batteries or regulated rails, as uncontrolled inrush may violate source impedance limits or trigger upstream protections.
Are there any known compatibility issues between the VE-26Y-MY-F3 and certain input filter configurations, particularly those involving common-mode chokes?
Compatibility depends on the choke's saturation characteristics and parasitic capacitance. Common-mode chokes with high leakage inductance may interact poorly with the converter’s switching edges, causing voltage ringing or instability. Similarly, excessive input capacitance combined with inductive filtering elements can create resonant peaks. Designers should verify stability across all expected input networks using simulation tools and validate with bench testing, ensuring phase margin remains above 45° under worst-case LC conditions.
What documentation and reference designs are available for integrating the VE-26Y-MY-F3 into a custom PCB?
Vicor provides detailed application notes, including layout guides, thermal modeling data, and reference schematics tailored to the VE-26Y series. These documents emphasize proper grounding, decoupling placement, and isolation barriers. The VE-26Y-MY-F3 is compatible with standard full-brick footprints, enabling reuse in multi-board systems. Additionally, Spice models and IBIS files are available upon request, facilitating pre-layout analysis of transient behavior and stability margins.
Does the VE-26Y-MY-F3 support hot-swapping, and what precautions are necessary to prevent damage during live insertion?
Hot-swapping is not officially supported without external safeguards. Insertion into a powered system can cause voltage transients on the input side, potentially violating absolute maximum ratings or triggering false faults. To enable safe hot-plug operation, incorporate input surge suppressors, soft-start circuits, and sequencing logic that isolates the module until input voltage stabilizes. Always consult the datasheet’s transient specifications and consider using hot-swap controllers designed for high-voltage DC applications.
How does the VE-26Y-MY-F3 perform in environments with high humidity or condensation, given its RoHS3 and MSL classification?
The VE-26Y-MY-F3 is RoHS3 compliant and classified with MSL Not Applicable, indicating it is not moisture-sensitive during manufacturing. However, this does not imply immunity to environmental humidity during field deployment. In high-humidity conditions, especially near condensation points, users should apply conformal coating post-assembly to prevent electrochemical migration along the high-voltage input traces. Proper sealing of enclosures and adherence to IPC Class II standards further mitigate long-term reliability risks.
What alternatives exist if the VE-26Y-MY-F3 cannot meet space constraints in a compact design, and how do size comparisons affect thermal performance?
If board area is limited, alternative Vicor products like the VI-200 series (smaller footprint) or newer ChiP-based solutions offer higher power density. However, these often trade off isolation voltage, output current, or thermal performance. For example, the VI-260 variant delivers similar power but in a smaller form factor, yet may require more sophisticated heat sinking due to reduced surface area. Replacing the VE-26Y-MY-F3 necessitates reevaluating both electrical compatibility and thermal budgets, as tighter packaging increases junction temperatures for the same power loss.
Can the VE-26Y-MY-F3 be used in aerospace or military applications, or are there qualification limitations?
The VE-26Y-MY-F3 is designed for commercial ITE use and carries standard industrial certifications. It is not inherently qualified to MIL-PRF or DO-160 standards. While its wide operating temperature range (-55°C to 85°C) suggests some ruggedness, additional screening, radiation testing, or environmental validation would be required for defense or avionics use. Users seeking military-grade performance should explore Vicor’s HiRel or custom-qualified variants instead.
What is the significance of the "MY" suffix in the VE-26Y-MY-F3 model number, and how does it affect interchangeability with other VE-26Y variants?
The "MY" suffix denotes a specific product configuration under Vicor’s naming convention, typically indicating a particular set of electrical and mechanical options. In this case, it aligns with the 3.3V, 33A output and full brick package. Other suffixes like "MX" or "MZ" might correspond to different output voltages or efficiency grades. Interchangeability requires matching all parameters—including input range, isolation, and protection features—so substitution should only occur after verifying cross-reference data in official Vicor documentation to avoid functional mismatch.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vicor Corporation VE-26Y-MY-F3

Product Attribute VE-26Y-MY-F4 VE-26Y-MY-F2 VE-26Y-MX-F3 VE-26Y-MY-F1
Part Number VE-26Y-MY-F4 VE-26Y-MY-F2 VE-26Y-MX-F3 VE-26Y-MY-F1
Manufacturer Vicor Corporation Vicor Corporation Vicor Corporation Vicor Corporation
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Applications - - - -
Voltage - Output 2 - - - -
Voltage - Isolation - - - -
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Features - - - Simultaneous Sampling
Efficiency - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage - Input (Min) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Voltage - Output 1 - - - -
Series - - - -
Size / Dimension - - - -
Type - - - -
Voltage - Output 3 - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Number of Outputs - - - -
Voltage - Input (Max) - - - -
Current - Output (Max) - - - -

VE-26Y-MY-F3 Datasheet PDF

Download VE-26Y-MY-F3 pdf datasheets and Vicor Corporation documentation for VE-26Y-MY-F3 - Vicor Corporation.

Datasheets
VI/VE-200 Family.pdf
Design Resources
VI-200, VI-J00 Design Guide, Appl Manual.pdf
Environmental Information
Vicor REACH.pdf Vicor RoHS Cert.pdf

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Vicor Corporation

VE-26Y-MY-F3

Vicor Corporation
98D-VE-26Y-MY-F3

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