Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Can the LNK564 offline flyback controller have output regulation by optocoupler?

Status
Not open for further replies.
T

treez

Guest
Hello,
We intend to use LNK564 offline flyback controller for a flyback that switches off the 380VDC PFC bus.
It will supply a secondary of 5V, 200mA, and will have a 13V bias winding which gives some 100mA to the primary side circuitry.

Do you think we can do this via secondary side optopcoupler/TL431 regulation? (The opto transistor would be connected in emitter follower style from Bias winding to FB pin of LNK564).

Page 11 of the datasheet appears to say that regulation is a complicated function of the current into, and the voltage at, the FB pin.

Do you think its possible to do opto-based regulation of the LNK564?


Lnk564 datasheet:
https://www.mouser.com/ds/2/328/lnk562-564-6129.pdf
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top