I have a common input for boost converter, microcontroller and lcd. The input is connected to 5v regulator for lcd and microcontroller. When I change the load (decrease) for boost converter, my lcd and microcontroller get off. It feels like boost converter takes all the power. Why is this happening? Is there a way to use common input without disturbing each other?

 

I have a common input for boost converter, microcontroller and lcd. The input is connected to 5v regulator for lcd and microcontroller. When I change the load (decrease) for boost converter, my lcd and microcontroller get off. It feels like boost converter takes all the power. Why is this happening? Is there a way to use common input without disturbing each other?

You have not provided any meaningful information that we could use to help you solve your problem. There is a way to solve your problem, but we can't tell you what it is without knowing the details of the components you are using. So, pony up.