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Re: [Discuss-gnuradio] DC-DC converter

From: Cory Papenfuss
Subject: Re: [Discuss-gnuradio] DC-DC converter
Date: Mon, 6 Dec 2004 07:11:50 -0500 (EST)

I've used a very similar chip a few times before. One was for an inversion (+14V -> -14V automotive). Another time was for a step-down from +14 -> +4.5. I'm not sure what input voltage you've got available, but you should be able to get 33V from a 12V in. The duty cycle will be getting a big slim, though, so if you try to do it from +5 or +3.3, it'd be a bit ugly and you'd probably want a coupled-inductor flyback configuration.

Also, check on the availability of that series of chip. I know the ones I used in the past have become obsolete.


* Cory Papenfuss                                                        *
* Electrical Engineering candidate Ph.D. graduate student               *
* Virginia Polytechnic Institute and State University                   *

On Mon, 6 Dec 2004, Ramakrishnan Muthukrishnan wrote:


I am trying to design a 4702 RF Frontend to hook on my machine. I am trying
to find a way to generate 33V. Do any of you have a simple circuit which
can be built?

I just saw this module, which I guess can be used for this purpose. Any



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