Adrian Lita

What I Did

• Schematics design (digital part)
• Firmware x 2
• Testing

Overview

This project was a high-reliability power supply and battery management system designed for satellites. It was developed in collaboration with the academic community and funded by the European Space Agency (ESA) under a research grant. Its purpose was to provide stable power distribution to satellite subsystems while managing battery charging and health monitoring in the harsh conditions of space. Featured two-level isolation using planar transformers, digital control in all stages (DSP microcontroller) and minimized electromagnetic interference (EMI).

Technical Details

4 Inputs (solar panels, left of the board) with Inteligent Maximum Power Point Tracking (MPPT) for optimal energy extraction 2 battery connectors (top of the board) for redundancy with charging and discharging monitoring (battery management system) Isolated intermediate bus converter, which regulates the voltage for the POL stage and isolates the output from the input 3 outputs (1.2V @ 10A, 3.3V @ 10A, 5V @ 10A) with independent monitoring and control Input and output voltage ranges: 5-48 VDC Built using 3 oz copper 4-layer PCB with planar transformers for higher efficency in power extraction and repetability.

Technologies Used

• C / ASM
• dsPIC33 family microcontroller