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TPS92200: High-side current sense

Part Number: TPS92200
Other Parts Discussed in Thread: INA199,

Would it be possible to use the TPS92200 with a high-side current monitor (like INA199) to provide the feedback signal, instead of a low-side sense resistor?  The high-side monitor will introduce some amount of phase shift and high-frequency attenuation.  But will that be a problem?  Or does the TPS92200 only need to see an average value on the FB pin so some attenuation or shift won't make a difference?