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DRV5023-Q1: Minimum Distance to capacitor

ReedKacz
Intellectual 2852 points
Part Number: DRV5023-Q1

My customer has a layout using 2x DRV5023BIEDBZRQ1. One is very close to a large capacitor. 

the Hall sensor has a distance of 1.3mm from the plastic bracket of capacitor, 2mm from the capacitor aluminum body.Could you please check if this placement will affect the Hall sensor? or can recommended the minimum distance from the capacitor?

Capacitor is UUE1V101: https://www.nichicon.co.jp/english/products/pdfs/e-uux.pdf 

Thanks!

  • 0
    TI__Mastermind 24065 points

    Hello ReedKacz,

    I do not think that capacitor should have much impact on your hall sensor measurement.  Typically we expect magnetic flux to be diverted and concentrated into highly permeable materials, which would be the path of least reluctance (magnetic resistance).  Highly permeable materials would include Iron, Nickel, and cobalt.  Aluminum and copper have a relative permeability similar to air.