• State
  • Locked Locked
  • Replies 0 replies
  • Subscribers 63 subscribers
  • Views 899 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Dual output boost converter +80V/-80V

Joao Figueiredo
Intellectual 335 points

Hi,

I'm designing a power supply with the following features:

Vin: 20V~30V

Vout: -80V

First, my choice was between the flyback and the negative boost (usign buck) topologies, but I read the application SLUA288 (Dual Output Boost Converter) and I saw there a way to generate a capacitively coupled auxiliary output, which in most of case is a negative output.

Comparing this approach to other topologies above (flyback and negative boost), it seems to be the simplest one.

Using the webench tool, I came to the circuit above:

So my question is: would the -80V work if a derive a capacitively coupled auxiliary output?

Regards,

João P. B. Figueiredo