I believe we need at least 100mA current to drive those Power Mosfets - Each takes about 250nC charge to get active.
So for 45v/0.01A it was supposed to be 10K (For a parallel config). Typo. Any comments on Parallel Zeners - are they suggestible.
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That is how Mosfets are modeled in component library of the software I'm using.
Body diode is not an explicit part of the Mosfet as such, but denotes resistance to reverse leakage current in the mosfet I suppose.
Checking it more on the internet found following description:
"Even though the body diode in MOSFETs is often drawn as a physical diode next to the MOSFET, it's not actually a discrete building block of a MOSFET. It is a 'parasitic' element that exists inherently because of the silicon build-up of a MOSFET. There are no MOSFETs without body diodes, it's a fact of life.
That also means that this body diode isn't actually a purpose-made diode. It doesn't quite behave like either a signal or power diode and it has fairly poorly defined characteristics. However, it also means that it doesn't have reverse leakage like a traditional power diode. It's part of the entire package, so the datasheet usually defines an overall reverse leakage figure."
Well this board has 2 modules as of now:
A) First one detects voltage buildup at Panels and activates Mosfets to delivery charge to SCC.
B) SCC's output towards Battery (Charging) is regulated with Mosfets, using control signal from micro processor.
This is to control charge limit for the batteries. Switching Off SCC Input from panels could also have done it. Which one does looks better?
Thanks for your sanity check and response.