In today's high-demand environments, from military operations to aerospace missions, ensuring a high-power system is non-negotiable. In an industry that requires high-voltage, high-velocity projects, current sharing is necessary to achieve operational reliability and efficiency. Milpower Source is at the forefront of this technology, offering robust solutions that address the complex demands of modern power systems.
Understanding the Complexity of VPX Power Systems
VPX systems, compliant with the VITA 47 standard, are engineered for extreme conditions, providing robustness essential for rugged computing. The VITA 62 standard further refines these systems by setting stringent power supply requirements, ensuring reliable performance under challenging conditions.
In VPX systems, power supplies need to deliver consistent and dependable power. Any failure or inefficiency in the power supply can lead to significant operational risks, especially in mission-critical applications like defense and aerospace. Therefore, current sharing—where multiple power supplies work in tandem to distribute the load—is crucial for addressing these challenges.
The Milpower Solution: Advanced Active Current Sharing Technology
Milpower Source excels at navigating the complexities of VPX power systems with its innovative current-sharing technology. Its solutions enhance power reliability and capability, making it a leading choice for demanding applications.
Milpower's Active Current Sharing technology (A.C.S.) involves feedback mechanisms that continuously monitor and adjust output’s power to ensure precise load distribution. This results in a tighter load balance of approximately 1-3A load balance and more stable power output.
Key Benefits of Milpower’s Current Sharing Technology
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Increased Power Capacity: Milpower's solutions expand the total power capacity by utilizing multiple power supplies in parallel. Full utilization of power without required derating.
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Balanced current between units
Current share example of 3 parallel units is given in Figure 1. -
Controlled turn-on into full load.
a well-balanced and controlled turn-on sequence allows for a linear controlled outputs turn-on. Figure 1 also provides atypical turn-on example of 3 paralleled units. -
Close loop current share improved outputs ripple. Example given in Figure 2.
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Power supply A.C.S close loop is not as sensitive as the passive current share mechanism for power traces and sense connection.
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Improved derating: Milpower's technology facilitates precise load distribution, preventing overloading any single unit and enhancing overall system performance.
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Thermal Management: Effective current sharing reduces thermal stress on individual power supplies. Milpower's designs optimize thermal performance, extend the components' life, and maintain system reliability.
Figure 1. 3 Units Turn-on into 150A Load
Figure 2. 3 Units 12V Output Ripple under 150A Load
Applications of Milpower’s Current Sharing Technology
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Military and Defense Systems: Milpower's current-sharing solutions provide the reliability and redundancy essential for military applications. By distributing power evenly and handling potential failures, these systems ensure uninterrupted operation in the field.
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Aerospace Systems: In the aerospace sector, where conditions can be extreme, Milpower's technology maintains system stability and efficiency. The enhanced power capacity and redundancy provided by current sharing are crucial for mission success in challenging environments.
Choosing the Right Solution: What to Consider
When selecting VPX power supplies with current sharing capabilities, consider the following:
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Power Requirements: Ensure the power supplies meet your system's total power needs, including current capacity and voltage stability.
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System Redundancy (input): Evaluate the required level of redundancy. Milpower's solutions offer robust redundancy, ensuring continuous power delivery.
- Environmental Conditions: Assess the operational environment and select power supplies that can withstand these conditions while delivering reliable performance.
Milpower Source: Setting the Standard
Milpower Source stands out in the VPX power supply market with its advanced current-sharing technology, exemplified by its M4094 model. This power supply features:
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VITA 62.2 Compliance: Ensures compatibility and reliability in VPX systems.
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Thermal Balancing: Efficient management of thermal load, enhancing system reliability.
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In-Rush Current Limiting: Provides a soft start and hot-pluggable feature to minimize startup impact.
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Discrete Designs: Offers flexibility and reduces obsolescence risks.
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Full Power Delivery: Delivers power until thermal shutdown, avoiding significant design overhead.
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Industry-Leading Turn-On Time: Quick transition from power-up to stable output.
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Comprehensive Configuration Control: Allows precise adjustment for specific applications.
Milpower Source offers innovative technology and comprehensive support throughout the design, integration, and sustainment phases.
Conclusion
The ability to effectively manage current sharing is crucial for optimizing performance and reliability in VPX power supplies. Milpower Source leads the industry with its advanced solutions, ensuring that its power supplies meet the rigorous demands of modern applications.
Milpower Source remains committed to advancing power supply capabilities as technology evolves, driving greater efficiency and reliability for critical systems. Their ongoing innovation and dedication to excellence solidify their position as the leading power solutions provider.
For customers seeking dependable, high-performance power solutions, Milpower Source is the trusted choice. It consistently delivers cutting-edge technology and exceptional support.
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