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If it's a flyback type then you have a transformer in the output stage.
It must be a step-down transformer, right?
With a diode in series? That will create a fraction of a volt drop.
2.
A transformer only conveys AC to the secondary.
So when you say continuous conduction mode, do you mean the transformer primary receives AC with a continual DC component?
Then this is inefficient use of the transformer. Only the AC component will transfer any power.
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Edit: Reading an article I see there is such a thing as using continuous mode in a flyback converter. Unexpected.
I was going to mention that your transformer might be saturating, but I suppose you selected one which can handle the currents you are sending through it, at your stated frequency of 20 kHz.
Hi pol
It is simple . but it depends on that what topology you have used for ? e.g current mode or voltage mode ? and also it depends on what driver IC you have used ? if you tell me more informations i can help you as well .
Best Wishes
Goldsmith
Hi pol
Well it has a pin that called i sense . if you read it's datasheet it gave you the manner for current limiting as well . but if you need variable current you will need an opamp and then a reference voltage that can be variable .
Good luck
Goldsmith
Hi pol
What i have told ? i have told that there is two pin that called isense . did you see that ? an important think is how to read a datasheet carefully . no problem ! see below , please :
Good luck
Goldsmith
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Pol , of course there are many other manners available for this aim . but it depends on you ! for example if your IC had not any pin for current limiting do you know what you could do ? it is simple ! breaking the voltage feedback pin !!
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