The VTM Aerospace Series features high-reliability Vicor Transformer Modules designed for aerospace, defense, and space applications in Factorized Power Architecture (FPA) systems. These modules provide current multiplication with galvanic isolation when used with PRMs (Primary Regulated Modules), delivering high current at low voltage from an intermediate bus voltage with aerospace-grade reliability and radiation tolerance.
Overview
The VTM Aerospace Series represents Vicor's solution for aerospace applications requiring current multiplication with galvanic isolation in Factorized Power Architecture (FPA) systems.
VTMs (Vicor Transformer Modules) work in conjunction with PRMs (Primary Regulated Modules) to create a complete power solution. The VTM provides current multiplication and isolation, while the PRM provides regulation and power factor correction.
Key Features
Enhanced Reliability
Engineered for aerospace and defense applications with extensive life testing and enhanced screening for high-reliability performance.
Radiation Hardened Options
Available with radiation hardened options for space exploration and satellite applications with total ionizing dose (TID) and single event effects (SEE) protection.
Hermetic Packaging
Available in hermetically sealed packages for applications requiring maximum protection from environmental contaminants.
High Efficiency
Achieves up to 98.2% efficiency through fixed-ratio transformation in aerospace applications.
Technical Specifications
| Model | Power Range | Efficiency | Input Voltage | Output Voltage/Current | Package | Applications |
|---|---|---|---|---|---|---|
| VTM4848015-M | 300W | 98.0% | 42-54V | 1:1 | VIA-Hermetic | Satellite systems |
| VTM4824030-M | 600W | 98.2% | 42-54V | 2:1 | VIA-Hermetic | Space applications |
| VTM4812046-M | 1000W | 98.1% | 42-54V | 4:1 | VIA-Hermetic | High-power aerospace |
| VTM2412046-M | 1000W | 97.9% | 21-27V | 2:1 | VIA-Hermetic | Avionics systems |
| VTM1206046-M | 500W | 97.7% | 10.5-13.5V | 2:1 | VIA-Hermetic | Low-voltage aerospace |
Applications
VTM Aerospace modules are optimized for aerospace and defense applications requiring high current at low voltage with galvanic isolation. Common applications include:
Satellite Power Systems
Current multiplication for satellite systems with radiation tolerance and extreme temperature operation.
Avionics Power
High-current isolated power delivery for aircraft avionics systems requiring aerospace-grade reliability.
Space Exploration Equipment
Power conversion for spacecraft and planetary exploration equipment with extreme environment requirements.
Design Considerations
Factorized Power Architecture
VTMs must be used with PRMs to form a complete power solution. The PRM provides regulation to the intermediate bus voltage, while the VTM provides current multiplication and isolation to the load. The output voltage of the system is determined by both the PRM regulation and the VTM turns ratio.
Extreme Environment Operation
VTM Aerospace modules are designed for extreme temperature ranges (-55°C to +125°C) and tested for vibration, shock, and radiation exposure. Design must account for derating in extreme conditions to maintain reliability and performance.
Radiation Effects
For space applications, consider total ionizing dose (TID) and single event effects (SEE) impacts. Radiation hardened options are available to ensure continued operation in high-radiation environments.
Frequently Asked Questions
How do VTMs differ from traditional transformers?
VTMs are active transformer modules that operate at high frequency with minimal losses, achieving very high efficiency and power density. They are designed specifically for FPA systems and provide current multiplication with galvanic isolation.
What is the relationship between PRM and VTM in FPA?
The PRM provides regulation to an intermediate bus voltage (typically 48V), while the VTM provides current multiplication and isolation to the load. The output voltage is determined by the PRM regulation and the VTM turns ratio.
What radiation tolerance options are available?
VTM Aerospace modules are available with radiation hardened options providing protection against total ionizing dose (TID) and single event effects (SEE) for space applications.
Related Products
DCM Modules
Fixed-ratio bus converters with galvanic isolation for voltage transformation without regulation.
BCM Modules
Current multiplication bus converters with bidirectional power flow for non-isolated applications.
VTM Modules
Vicor Transformer Modules for current multiplication with isolation in FPA systems.