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The BepiColombo Laser Altimeter (BeLA) power converter module (PCM): Concept and characterisation.

J Rodrigo¹, E Gasquet², J-M Castro¹

¹Consejo Superior de Investigaciones Científicas (CSIC), Instituto de Astrofísica de Andalucía (IAA), Glorieta de la Astronomía s/n, 18008 Granada, Spain.

The Review of Scientific Instruments

|April 5, 2017

Summary

This study details DC-DC converter design for space instruments, focusing on efficiency and survivability for the BepiColombo Laser Altimeter. The power converter module meets all mission requirements.

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Area of Science:

Aerospace Engineering
Electrical Engineering
Power Electronics

Background:

Designing DC-DC converters for space missions requires addressing stringent constraints.
The BepiColombo Laser Altimeter (BLA) is the first European space laser altimeter, necessitating specialized power solutions.

Purpose of the Study:

To outline the key design considerations for DC-DC converters in space instruments.
To detail the design flow and component selection for the BepiColombo mission's power converter module.

Main Methods:

Discussed topology, technology, input filters, transformer design, and peripheral components.
Addressed grounding, regulation (load and line), and secondary protection circuitry.
Presented component selection trade-offs and design trade-offs.

Main Results:

The design process considered printed circuit board occupation, mass, efficiency, and environmental survivability.
Testing confirmed that inrush current, regulated output start-up, and switching functions meet requirements.

Conclusions:

The developed DC-DC converter design is fully compliant with the stringent requirements for the BepiColombo mission.
The paper provides a comprehensive guide to designing space-grade DC-DC converters.