I'm designing a control for a switching power supply (buck), and I need to isolate the feedback loop from my control (PWM), but I need this isolation to give the same voltage it receives.
I've found the linear optocoupler IL300, but it's impossible for me to get it, so I'm trying to work using a 4N25, I've seen some other peopĺe who have worked with this one but I just don't know how to set it to have a linear behaviour (aproximately). Hope you can help me with this.
Regards.
I've found the linear optocoupler IL300, but it's impossible for me to get it, so I'm trying to work using a 4N25, I've seen some other peopĺe who have worked with this one but I just don't know how to set it to have a linear behaviour (aproximately). Hope you can help me with this.
Regards.