Electronics > Projects, Designs, and Technical Stuff
DC-DC Converter Stability and performance help
<< < (3/3)
FotatoPotato:
I have dealt with DOA and fake chips in the past but that was a long time ago, now I only buy from Digikey or Mouser. Nowhere else  :-+
dfault:
Some general suggestions and thoughts:
* Label your schematic with your intentions. Should it be a 5V rail? What's the current limited to? How did you calculate a value?
* Consider prototyping a sub circuit before the whole thing. It seems like you may have done that
* Things tend to get hot when they oscillate. Also, it seems like you might be over driving the FB on on your schematic.
* you can solder less breadboard most converters with care. Pay extra attention to the current sense lines going to the regulator. These are very noise sensitive.
* What is the 3632 doing? What is the 3092 doing?  Limiting current to the set pins?
* the diode on the 3081 is odd. As is the r13, r23, and r24 network.  What is the goal?
* the lt 308x regulators don't always like capacitance on their set pins. Check the datasheet.
Navigation
Message Index
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod