Output Voltage Feedback for Inverter

[prathamesh_d2001]

Can anybody tell me how I should use TLP621 Opto isolater IC in inverter output path in order to get feedback of output voltage? does anybody have such schematic ?

 

[karesz]

Hi,
you should combine it with a constant current source (TL431) & is as all other coupler to use...
K.

Added after 6 minutes:
Some imrpession is possible from Fig.26... https://focus.ti.com/lit/ds/symlink/tl431.pdf
Read pls ST`s Appl Note: AN1059, & the sinilar topics by

 

[aminkath]

If you are use sg-3524 opto collector conect with 4.7 k res wit 5 v ref pin then add 100k res in led side of opto and connect with output of ups/invertor

 

[karesz]

Hi,
here is another good ApplNote for the subject, refer pls for Figures 15&16:
https://www.st.com/stonline/products/literature/an/5956.pdf
K.