protection the boost converter

-live wire-

Joined Dec 22, 2017
959
This is a good video demonstrating how to make low-cost and efficient DIY short-circuit protection. However, more information would be useful. What voltage are you stepping up and to what? At how much current do you want to cut-off the power? What losses are acceptable? Please give more information.
 
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ian field

Joined Oct 27, 2012
6,536
The problem is that fuses need to be replaced, and that can be annoying and the cost can build up.
Tv safety became heavily regulated - the usual trick was a TO92 style thyristor like the 2N5061 etc which controls a shut down function. Current is simply a sub Ohm resistor in series with the output and the B/E junction catching ab excessive volt drop. you can do it better with a rail to rail input op amp, but design takes more effort.

You have to switch it off and back on to reset it.
 

Thread Starter

mohammadhossein ajorloo

Joined Aug 27, 2016
17
This is a good video demonstrating how to make low-cost and efficient DIY short-circuit protection. However, more information would be useful. What voltage are you stepping up and to what? At how much current do you want to cut-off the power? What losses are acceptable? Please give more information.
i have a 12 to 120 volt with 300ma output current boost converter.
 
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