AN82_Tiny switch flyback design doubts_KRP as nagative value
Posted by: e-man@123
on
I am referring to AN82 to design a flyback converter with 15 W output , i have selected TNY286 from the application note, at step7 in the design steps for continuous mode operation (page number 50) i am getting KRP as negative value Is this ok, can i move forward with the design,
i took the Ilimit value from the datasheet as 326 milli amps.
Regards
Sooraj P
Hi Sooraj P,
Thank you for reaching out to Power Integrations and for your trust in our devices.
May I kindly request for your PI-XLs file so that I can verify all design parameters if everything is still within the proper values.
KRP should never be negative, this KRP value indicated the mode of operation of the flyback converter design and should range starting from 0.4 above as our recommendation.
Kindly also let me know if this calculation is computed manually, if so may I kindly also request for you to reply with the ff details so that I can replicate it using PI-XLs to ensure efficient and correct calculation of the parameters.
Above details above are enough so that I can optimize and recommend you a design appropriate for a 15W project.
Regards