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foldback characteristics

Posted by: nagasahitya on

Dear team, i am using top249y for 40v,1A.my requirement is at 1.1A(110%) i want fold-back characteristics.plz help me

Comments

Submitted by PI - Traveler on 11/27/2012

By fold-back chacteristics, are you saying that you would like your power supply to enter into constant current mode similarly to a battery charger?

 

Regards,

The Traveler

 

Submitted by nagasahitya on 11/28/2012

thanks for the reply.my application is not related to battery charger.for my application at 110% load output voltage of my ckt must fall linearly.

Submitted by PI - Traveler on 11/28/2012

Just to make sure I'm understanding correctly, as your output is getting overloaded, you want the the output voltage to decrease.   This would create a quasi constant-power output supply.  Am I understanding you correctly?

 

Regards,

The Traveler

 

Submitted by nagasahitya on 12/13/2012

It is not quasi constant-power output supply. As per my requirement, output voltage and output current should decrease linearly when output gets overloaded. according to the attached graph.

Submitted by PI - Traveler on 12/13/2012

This Design Note will probably be helpful for what you're trying to accomplish.

 

Regards, 

-The Traveler