Tool/software:
Hi Team,
Customer is testing LM5164 for their project, and they found the empty load waveform looks a bit strange(high ripple), could you please check whether the waveform is correct or not. Thanks.
Application conditions:
Vin=48V, Vlout=5V, Iout=1A
Current issue:
1. Vout power-off waveform, it seems there are lots of ripples on empty load waveform, but it is smooth in 0.5A load waveform:
Empty load
0.5A load
2. High ripple in empty load Vout.
Empty load, Vpp is about 80mV
0.5A load, Vpp = 46mV
Question:
1. High ripple should be related to light-load and empty load, but I don't see PFM in the DS, could you please check which mode is applied on the empty load and why the ripple is larger?
BRs.
Frank Cai
