How to calculate the Inductance(Lres) and Cres Value in a lamp ballast design?

[emiljose88]

Dear all

Me going to designing a induction lamp ballast in a wide range, like 40W,80W,120W,150W,180W,200W,250W.
Me successfully completed 40W & 80W, using a reference design. The running frequency is 218Khz.
But I got continuous failures issues in 150W ballast, there is no reference design. How can I calculate the Inductance(Lres) and Cres Value??

 

[chuckey]

As you don't specify what lamps you are using its a guess, but I would think that as the power increases, its primarily the current that increases, not the voltage. 80W = two 40W inside the same envelope, just combine the metal work. . .
So how does you electronic ballast know what to set the current to?
Frank

 

[Myrtonos]

All induction lights run on AC of course, but could polyphase be used? Such as if you have multiple induction lights in a room and run each one off a separate phase.

 

[schmitt trigger]

Could you kindly please post a link to the reference design you are using, for us to be able to give suggestions?