T
treez
Guest
Hi,
The below is an App Note for a offline flyback of power 48V at 4.17A. (90-265VAC input)
The controller is the UCC28710. It is a BCM controller.
Would you agree that the drain voltage waveforms on page 12 must be wrong? These waveforms cannot be at full-load as told..they must be at much lighter load, surely?
These waveforms show the converter in deep DCM at full load and this would be a mistake. You would never design for deep DCM at lowest VAC input and full load, surely you agree?
App note (PM10816)
UCC28710 datasheet
The below is an App Note for a offline flyback of power 48V at 4.17A. (90-265VAC input)
The controller is the UCC28710. It is a BCM controller.
Would you agree that the drain voltage waveforms on page 12 must be wrong? These waveforms cannot be at full-load as told..they must be at much lighter load, surely?
These waveforms show the converter in deep DCM at full load and this would be a mistake. You would never design for deep DCM at lowest VAC input and full load, surely you agree?
App note (PM10816)
UCC28710 datasheet