Taking feedback from DC side of Non-Isolated flyback converter in LNK626.
Posted by: Afaq Haider
on 02/02/2023
I am using LNK626 as a flyback converter. The output is Non-Isolated 5V.
So can I use feedback from DC side instead of AC side of the output diode? I think I will get better regulation, because diode drop variation will be eliminated.
Comments
Please see the circuit.
Input is 48V DC. Input Output Ground is Common.
| Attachment | Size |
|---|---|
| LNK626 NonIsolated Flyback | 99.9 KB |
Hi Afaq Haider,
LinkSwitch-CV is for primary sensed feedback designs. You may refer to this design guide for more information: AN-45 - LinkSwitch-CV Design Guide | Power Integrations, Inc.
If you want to use feedback from the DC side, you can use other similar devices such as LinkSwitch-TN2 and TinySwitch.
Thank you.
Hi Afaq Haider,
Can you send the schematic of your current design as well as the changes you intend to do?
Thank you!