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TPS51285A: cannot get into DEM

Ann_Lien
Genius 16490 points

Part Number: TPS51285A

Hi expert,

Customer has a question on CCM --> DEM. Below is the waveform that TPS51285A cannot get into DEM mode, we think it is due to wide ZCD threshold.(inductor current is down to -15.6A but it is still in CCM) Would you kindly help to check if it is normal operation for TPS51285A? Thanks a lot!!

Best regards,

Ann Lien