Hi,
I have a problem where the buck seems to only be running on 100% duty cycle.
Have tried two different PCBs and different loads/ input voltages
See the pictures of the schematic and oscilloscope below.
The following pin Voltages were measured with a multimeter:
1: 12.01V
2: 3.33V
3: 0V
4: 2.36V
5: 0V
6: 0V
7: 11,97V
8: 12.09V
9: 0V
10:12.01V
11: 0V
12: 12.01V
13: 14.45V
14: 14.45V
oscilloscope view of start up
oscilloscope view while running
oscilloscope measurements while running
layout (can also see the oscilloscope connection wire in green)
schematic