How to choose correct value of inductor in a circuit
I have a PCB where SIM900 is used. As SIM900 needs at least 2amps of current during transmission burst so I have used LM2576 for its power. Below is its schematic:
enter image description here
Here is the datesheet of lm2576
In the circuit, I am using 200uH inductor. During a call, SIM900 stops suddenly and inductor is blown. This happens for the first time so I replaced it and again I tried and the same thing happened. Inductor starts heating up and then it get blown. What value of inductor should I use with this circuit.?
Is this a good question?