I have a power supply design using the
LM5088-1 Buck controller.
The TI web design gave me a design
(24V6A.pdf).
The design on my board is also included (LM5088PWR.pdf).
The input voltage is from 42V to 59V.
The problem is the output voltage is
only 7V, not the 24V I need.
Changing R32 to ~15K gives me a higher
output voltage ~12V.
The strange thing is the MOSFET gate
signal looks wrong.
It never goes above 5V and never goes
below 1V.
The gate drive on this buck power
supply should go up to close to 48V and down to close to 0V.
Can you give me suggestions on how to
make this LM5088 based design work?
Attached files are the schematic.
Thanks.24V6A.pdf
