Simulation help needed

Thread Starter

mishra87

Joined Jan 17, 2016
1,000
Hey all,
I am looking for Overload and short circuit protection for below circuit.
Any thought is highly appreciated.

1. Overload protection - if current >2A in this case buck regulator has to be switch off. After removal of overload regulator should not start automatically. It needed disconnection procedure of input voltage source to recover.

1. short circuit protection - if output is short circuited in this case buck regulator has to be switch off . After removal of overload regulator should not start automatically. It needed disconnection procedure of input voltage source to recover.

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Thanks in advance !
 

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Thread Starter

mishra87

Joined Jan 17, 2016
1,000
Hi,
Is there any possibility to measure the load current using shunt and disable to enable pin of LM2575 ?
Thanks !
 

crutschow

Joined Mar 14, 2008
32,903
Hi,
Is there any possibility to measure the load current using shunt and disable to enable pin of LM2575 ?
Thanks !
Most likely.

Can you put the shunt resistor in the load ground return?
It's easier to low-side sense current than high-side.
 
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