I am using H11AV1A for my LLC to control my output , i am looking for tutorial to help me to calculate my control loop parameters

 

A Goggle search turned up this and this.

 

A Goggle search turned up this and this.

I am not asking about controller , i am asking about optoisolator H11AV1 , how you claculate RC1, Cc1, Cc2, RB2, RB1

 

I am not asking about controller , i am asking about optoisolator H11AV1 , how you claculate RC1, Cc1, Cc2, RB2, RB1

To my surprise the app note doesn't discuss that, which is an odd omission.

So I would compare the parameters of the opto you are using with the one in the schematic.
If the transfer gains are reasonably close, you likely can use the parameters in the demo circuit, since that's part of the loop, and such loops are generally not very sensitive to small changes in the loop gain, which is dominated by the open-loop gain of the TL431 (≈55dB).

The main consideration is that the TL431 can control the output of the opto from full on to full off, worst-case (as determined by the 15kΩ minimum Rfb internal pull-up to 5V in the ICE1HS01G).
The value of R22 controls the maximum current to the opto input.

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To my surprise the app note doesn't discuss that, which is an odd omission.

So I would compare the parameters of the opto you are using with the one in the schematic.
If the transfer gains are reasonably close, you likely can use the parameters in the demo circuit, since that's part of the loop, and such loops are generally not very sensitive to small changes in the loop gain, which is dominated by the open-loop gain of the TL431 (≈55dB).

The main consideration is that the TL431 can control the output of the opto from full on to full off, worst-case (as determined by the 15kΩ minimum Rfb internal pull-up to 5V in the ICE1HS01G).
The value of R22 controls the maximum current to the opto input.
Thanks so much

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