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current sensing for L298N

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engkeat

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How to determine sensing resistor(pin 1 / 15) for L298N? Is there any formula to be used? thanks for guidance.
 
L298N Application Note: https://www.st.com/stonline/products/literature/an/1680.pdf

Looks like they're using 0.5Ω. But, it depends what you are going to do with the voltage at pin 15. The voltage will be the H-bridge current times the sense resistor resistance. Take a look at the examples on pages 6/8 and 7/8.

Ken
 
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