LM5158: DCM flyback (non-isolated) compensation

Mark Philip Felipe

Part Number: LM5158

Hi Team,

Designing a Flyback in DCM with the LM5158. Are there any guide on how to compensate it. I find it only for CCM. Do you have any suggestion? Or the CCM compensation is suitable for DCM also?

Have checked the calculator, and also I check the CCM application note. However, since the direct transfer function is not know, and the loop as well.

Seeking for your some assistance.

Thank you.

-Mark

over 3 years ago

0 Harry Hofner over 3 years ago

TI__Mastermind 19615 points

Hello Mark,

Thanks for promoting our products.
I have received the same question from Archie A.
Can you please confirm that this is the same customer request?

Thanks and regards,
Harry

0 Mark Philip Felipe over 3 years ago in reply to Harry Hofner

TI__Genius 10840 points

Hi Harry,

Thank you for your response.

We will just use this thread for the inquiry.

Hoping for your support. Thanks.

-Mark

0 EM over 3 years ago in reply to Mark Philip Felipe

TI__Genius 11215 points

Hello Mark,

A flyback that is compensated for CCM is stable in DCM too, so you can refer to the literature. Is there any specific reason why you would like to keep this flyback fully in discontinuous mode? We're looking forward to hearing from you soon.

Kind regards,
EM

0 Harry Hofner over 3 years ago in reply to EM

TI__Mastermind 19615 points

Hello Mark,

We have not heard back from you for three weeks now, so I assume your question has been answered.
You can re-open this thread or simply start a new one in case this one got locked.

Best regards,
Harry

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LM5158: DCM flyback (non-isolated) compensation