Other Parts Discussed in Thread: TEST, LM5176
In my application , I use LM34936-Q1 for the design:
Vin : 9~14V , Vout: 12V ; max Iout = 15A
I have already made PCB design and the borad is under debug. In debug process , i found one problem,
when input voltage is 14.5V , the circuit can drive 15A load normally. (buck mode)
if the input voltage is 9 - 13V, the circuit ONLY can raise load to about 4A.
it seems like that the converter operates abnormally with heavy load when it is in boost or buck-boost region.
this is my Schematic diagram , I would like a kind engineer help me review it and find the design fault.
I would also like to listen to more advises for improvement.
for the problem above , i have 2 questions:
Why does this issue happen?
How to solve it?