The next thing I would like to try with the LTM4675 (after getting the PMBus telemetry to work reliably) is reading its internal temp sensors and characterize the temp rise when at different currents and at ambient pressure vs. in a vacuum. Also I just noticed a discrepancy between the telemetry and the actual current displayed on the adjustable load at 08:05 just now. That's one more thing to look into. Hope you like the episode :)
You could use a mosfet for the reverse current protection. Might be worth it since the voltage drop over Rds(on) is way smaller than the schottkey voltage.
@@aculleon2901 Not yet, I feel like there are too many unknowns as of now to start working on simulations. Let me get back to you once I have a first draft of the schematic. Getting to that point should clear up a number of questions.
@@aculleon2901 Cool :) I have a Codeberg repo, but the schematic on there is very much a WIP. Unfortunately YT won't let me post URLs here, but there is a link in the description and if you go to main project, you will find the is a hardware repo.
The next thing I would like to try with the LTM4675 (after getting the PMBus telemetry to work reliably) is reading its internal temp sensors and characterize the temp rise when at different currents and at ambient pressure vs. in a vacuum.
Also I just noticed a discrepancy between the telemetry and the actual current displayed on the adjustable load at 08:05 just now. That's one more thing to look into.
Hope you like the episode :)
LOVE our CubeSat friends 🛰
Can't wait to send a CM4 (or 5?) to orbit some day!
Which adjustable load is that?
It's called Atorch DL24, I think I got it on Aliexpress
You could use a mosfet for the reverse current protection. Might be worth it since the voltage drop over Rds(on) is way smaller than the schottkey voltage.
Thanks for the comment, that's interesting! How would you implement this? With an ORing controller (like the LTC4358)?
@@buildacubesatinteresting ic but the voltage range of 9-24V seems like an issue. Do you have a simulation for energy harvesting part of your sat?
@@aculleon2901 Not yet, I feel like there are too many unknowns as of now to start working on simulations. Let me get back to you once I have a first draft of the schematic. Getting to that point should clear up a number of questions.
@@buildacubesat Sure 👍. I would be glad to help you. Do you have a github repo or something similar?
@@aculleon2901 Cool :) I have a Codeberg repo, but the schematic on there is very much a WIP. Unfortunately YT won't let me post URLs here, but there is a link in the description and if you go to main project, you will find the is a hardware repo.