On my other question I asked about how could I regulate a TEG like this:
for a 12 V, 10 W load I have. My first idea was to use some resistors, a zener diode and a linear voltage regulator. But people said that a buck converter would be better.
The problem was that I could not find a buck converter that could handle the 96 V max input from the TEG, at least where I live.
After thinking for a while, I remembered that this TEG curve I showed is actually for 20 peltier modules connected in series so I could instead connect two strings of 10 in parallel for a resulting IxV curve like this:
That should mean something like this:
And now I can use an adjustable LM2576HV module to regulate the 12 V and allow at least the 10 W from the TEG.
The only detail I saw is that maybe the voltage from the TEG won’t be exactly the same and some reverse current might occur, my idea was to add simple blocking diodes to the output of each string to avoid reverse current, so my final circuit looks like this:
What do you say? Any room for improvement? for me it seems pretty ok.
Thanks in advance!