Hello Team,
I tested output ripple at no load condition with LP8758-E0 EVM.
I set Vout to 2.5Vdc and changed Vin from 2.6V to 4.8V.
1. 3.0Vin ~ 4.8Vin range: As picture below, output ripple is reduced when Vin is increased.
2. 2.6Vin~2.9Vin range: Output ripple is increased if Vin is increased.
I think when dropout between Vin and Vout is enough, We can see that output ripple is reduced if Vin is increased.
But in the low dropout condition, IC shows different output ripple behavior. I think other additional factor is affecting this PFM operation.
So Could you comment about my test results?
Regards,
Antony
