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Hardware: Add the thermistor to the schematic #7

Closed joaoclaudioeb closed 1 year ago

joaoclaudioeb commented 1 year ago

The BQ24650RVAT needs a thermistor to properly adjust the VMP of the solar panel when the temperature varies. It is necessary to calculate its value and define its position in the PCB.

joaoclaudioeb commented 1 year ago

Update: We won't be using a thermistor for now. We're going to use a fixed value of resistors in the "resistive network", on the MPPSET pin. Because we still have to consider how, on the mission, we're going to add this thermistor to the satellite. So, for now, the "resistive network" should be calculated for a fixed value of 25°C.

rebeccaquintino commented 1 year ago

Update: We used the Texas Instruments spreadsheet to design the resistor network. We concluded that 270k Ohms is enough to conduct the RE²PS tests.

PS: It would be interesting to evaluate how to add the thermistor in the future.