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Circuit Protection
Forum How to protect a flyback SMPS's output for misconnection of 230VAC mains
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How to protect a flyback SMPS's output for misconnection of 230VAC mains

Former Member
Former Member over 12 years ago

I had have written this title to power managment but here i can find something better maybe?

You can see previous title from here,

 

http://www.element14.com/community/message/64903#64903/l/re-how-to-protect-a-flyback-smpss-output-for-misconnection-of-230vac-mains

 

Any help is welcome.

 

 

 

 

It is easy and clear to understand from the title,

 

I have a SMPS for an device, it works good but traders say in usage people allways misconnect such things without reading our asking anything even they are educated for that kind of jobs. So we need to protect our SMPS's output from misconnection of 230VA or anything?

 

SMPS is made with PI's TNY275GN, there is a MUR115 Diode looking to output and a parallal 150uF Al. electrolic Capacitor as usual. After that we have a DC/DC converter made with LM25011MY/NOPBLM25011MY/NOPB to limit current on a specifik value (we put that to control output's rise times and fall times in normal mode and current limit mode). After this LM25011MY/NOPBLM25011MY/NOPB converter circuit we connect our devices but we need to protect this output for 220/230VAC 50/60Hz mains with large tolerances. LM25011 circuit is the circuit when you write TI's main page 23-25V input and 17,5V/0,22 output select LM25011 with adjustable current limit from selections then you can see the circuit which needs to be protected from mains connection.

 

Is there any easy way anyone already know basicly?

 

Best Regards,

 

Tolga,

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