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Old 17th June 2006, 06:04 PM   #1
TOINO is offline TOINO  Portugal
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Default Hysteresis Controller with constant switching frequency

This paper seems to be interesting:

http://www.elkraft.ntnu.no/norpie/10...Papers/029.pdf
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Old 18th June 2006, 09:37 AM   #2
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It was interesting the first time we'd seen it, and the second. Look for a thread by analogspiceman on this.
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Old 18th June 2006, 12:48 PM   #3
TOINO is offline TOINO  Portugal
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You mean this one ?

http://www.diyaudio.com/forums/showt...948#post793948


Well... at least everybody could read it now… not only you and Analog with your secret mail exchanges
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Old 18th June 2006, 12:50 PM   #4
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Good job hunting that down That's exactly the thread I had in mind.
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Old 18th June 2006, 09:34 PM   #5
TOINO is offline TOINO  Portugal
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http://www.diyaudio.com/forums/showt...688#post793688

Wau! What a tread!

In http://www.diyaudio.com/forums/showt...328#post811328
Analogspiceman complains because has no inductor sense winding but this info is cleary visible on
the page 3 sch of the posted document.
Also on the picture of page 4 is easy to count the turns ratio 20:1.

As far as I understand, every body searches for a constant frequency solution…

What about the use of a PLL control referenced to a crystal oscillator?

One could control the reference of the comparator with the PLL and force a "constant" frequency!


Some thing like this: http://www.freepatentsonline.com/5160896.pdf
but with PLL instead of multiplier


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