Part Number:TPS562200
I tried to use this device in my design, but I was shocked when I saw this graph at the output:
Output voltage ripple is 360 mV! The design was created with Webench values:
And here is my schematic:
PCB is made according to all recommendations:
And in other schematics, with different output voltages is the same result!
The frequency depends on load, but the ripple is always more than 300mV.
It doesn't look like good DC-DC at all.
It seems that this TPS562200 uses some eco-mode control. With light load it stops oscillations until voltage level drops lower some feedback value. But why is it so large?
With 6V output and no load I had 800 mV output ripple. Seems like nonsense.
Can you advise me how to overcome this situation?