Hi TI team,
We are using INA220BIDGST current sensor to measure the current of cellular modules. Does VBUS need external power supply for measuring the current? Will the below circuit works?
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this is no supply voltage pin powering anything inside the INA220. The VBUS pin of INA220 allows to measure the VBUS potential. Please carefully read the datasheet
Even if you don't need to measure the VBUS potential, it's helpful to connect the VBUS pin to IN+ or IN-. This prevents the VBUS pin from being floating.