I am currently developing a concept picosatellite project launched by a pocketqube that is in a very early development phase, to be completely honest I have very basic electrical engineering experience when it comes to power systems and want to make sure what i'm doing this fine, the processing and communications part of the satellite are already sorted out and I just need help regarding power management. I am currently designing the power management for 2 separate devices, a small 26x26mm board satellite and a larger pocketqube. More or less to have an idea of the sort of power needs we are talking about here, the board satellite will only consume about 60mw at max and the pocketqube will probably consume about 170mw at most. The smaller board satellite will have no batteries and will use passive attitude control to point at the sun, while the pocketqube will have a small Li-ion battery and will most likely have active attitude control.
I have currently decided to use the SPV1040 MPPT integrated regulator for charging the battery, this will then be combined with some sort of off the shelf overcharge/overdischarge protection circuit. I am hoping to use a TPS62120DCNR switching regulator to regulate the power directly coming from the batteries in the pocketqube and the solar cells in the board sats. The current prototype uses a linear voltage regulator but I would like to increase the efficiency of the regulator.
There is quite a bit of stuff to take in mind and this is sort of an open discussion, feel free to ask me anything about the project and any input and collaboration are really appreciated since I'm working on this on my own.
Thank you for taking your time to read this post,
Julian
I have currently decided to use the SPV1040 MPPT integrated regulator for charging the battery, this will then be combined with some sort of off the shelf overcharge/overdischarge protection circuit. I am hoping to use a TPS62120DCNR switching regulator to regulate the power directly coming from the batteries in the pocketqube and the solar cells in the board sats. The current prototype uses a linear voltage regulator but I would like to increase the efficiency of the regulator.
There is quite a bit of stuff to take in mind and this is sort of an open discussion, feel free to ask me anything about the project and any input and collaboration are really appreciated since I'm working on this on my own.
Thank you for taking your time to read this post,
Julian