How to Make a Buck-Boost Converter with Continuous Current and Open Loop Design

[Frexter]

Homework Statement

I have to make a Buck-Boost converter for my Design PE class but the problem is even though i have read about them i seriously don't know where to start. I have to make calculations and choose a mosfet, load, capacitor and an inductor but i don't know how.

Homework Equations

The Attempt at a Solution

I'm looking for a tutorial or a step-by-step guide on building a BBC. It's pretty basic actually not extremely complicated but i just need a nudge to the correct direction.

 

[berkeman]

Homework Statement

I have to make a Buck-Boost converter for my Design PE class but the problem is even though i have read about them i seriously don't know where to start. I have to make calculations and choose a mosfet, load, capacitor and an inductor but i don't know how.

Homework Equations

The Attempt at a Solution

I'm looking for a tutorial or a step-by-step guide on building a BBC. It's pretty basic actually not extremely complicated but i just need a nudge to the correct direction.

Have you checked out the websites for National Semiconductor or Maxim? You will find a lot of useful application and design information there, since they make the ICs that you can use for controllers.

And what do you mean by "Open Loop" in the title of this thread? You will generally use feedback to stabilize the output voltage...

 

[Frexter]

By open loop, i mean the output voltage can be controlled by a potansiometer.

 

[berkeman]

By open loop, i mean the output voltage can be controlled by a potansiometer.

Ah. That's not "open loop", that's "adjustable".

Were you able to find some useful application notes at those websites?