1. I have a application in which I have schottky connected at input. At input a solar panel is connected & at output battery is connected along with charge controller. Schottky serves two purposes; one is protect the circuit in case reverse connection of panel are connected & second prevents reverse flow of current from battery to solar panel known as dark current.
2. Max current from panel is 10A, so I have connected two parallel schottky PDS1040. Datasheet of PDs1040 state max Vf drop of diode around 0.55V at 10A(wrost case Tj=-65) & 0.52V at 5A.
Max panel voltage goes to around 21V.
3. These two diodes gets heat up very quickly & I want to replace them with Mosfet. Now I was looking for how I can replace it with Mosfet.
4. First option is to use ideal diode. I have checked linear LTC4358, which is for 5A. Operating voltage range is 9V-26.5V. I am thinking I will connect these two in parallel. One problem is its lower voltage range is 9V so from datasheet I didn't understand what will happen when voltage falls below 9V, will it turn off, or it may partially tun on which can increase the voltage across mosfet & heat it up. Second it very costly around $5.38 unit price.
5. Other option I found here ( https://www.google.co.in/search?... )
It uses p channel mosfet & BCM856DS. Its an doubled matched transistor.
6. Any other circuit which I can use?