I am working on UCC38050. Everything is ok but I am unable to decide the coil as required for 400 V PFC i.e wants to achieve 85-90% of efficiency. Kindly anyone help me with correct specification of coil used in the circuit released by TI. I have used the same circuit which is given in the datasheet of UCC38050.
Hello Manish,
Thank you for your interest in the UCC28050 PFC controller.
The UCC28050 application circuit is further described and discussed in this TI app note 
.
In it, the boost inductor is identified as CTX16-15954 by Cooper Electronic Technologies. I found the following inductor datasheet in a websearch: https://media.digikey.com/pdf/Data%20Sheets/Coiltronics%20PDFs/CTX16-15954.pdf
Construction details are not provided, but more information than found in either the UCC28050 datasheet or its app note.
I hope this helps you.
Regards,
Ulrich
