As we know PMP20859 can support up to 3 inputs, two are PSE, one is DC Jack.
Now customer is going to use PMP20859 as base to modify for their customer.
1. They would like to remove DC Jack, what components can be removed?
2. For input caps, we can see there are two 47uF caps on one TPS2372-3, can we remove one?
3. Can you explain how the circuit works in the red box? and why it needs D16 and Q11? and what is the function of U2 in this circuit?
Thanks a lot for your support always.
Best regards, Cage.