chaitanyab
Member level 3
Hi,
I am reading lot of application notes about the design of TL431 and opto coupler circuit for flyback converter. However none of them tell me how the opto-coupler is used? as digital or analog (linear mode)? I have used opto-couplers for isolation and transmitting digital signals. Can any optocoupler transfer signal in analog? or is it digital and we need to filter the PWM to get the smooth DC for the feedback. I am bit confused here
Thanks
I am reading lot of application notes about the design of TL431 and opto coupler circuit for flyback converter. However none of them tell me how the opto-coupler is used? as digital or analog (linear mode)? I have used opto-couplers for isolation and transmitting digital signals. Can any optocoupler transfer signal in analog? or is it digital and we need to filter the PWM to get the smooth DC for the feedback. I am bit confused here
Thanks