HI,my dear Engineers,I come cross a queston.
1,I use a power paln that is LM27402+CSD87351Q5D+LM10011,I find that it can achieve 12v to 1v,but it's output voltage contain High-frequency oscillation,the FB of LM27402 also have High-frequency oscillation.LM27402 is very hot,this is Schematicsand output waveform.