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TI Home » TI E2E Community » Support Forums » Power Management » Wireless Power » Wireless Power Forum » bq500210 metal detection
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bq500210 metal detection

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Andrew Sauter70629
Posted by Andrew Sauter70629
on Jul 05 2012 22:58 PM
Prodigy150 points

Hello,

Is the FOD threshold and the analog ping threshold separate?  

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  • Bill Johns
    Posted by Bill Johns
    on Jul 06 2012 08:52 AM
    Verified Answer
    Verified by Bill Johns
    Genius12330 points

    Hello Andrew

     

    Analog Ping and FOD threshold are not related and are separate.

    Analog Ping is looking for a change in the ping voltage amplitude due to an object placed on the pad, typically a receiver.  The next step for the transmitter is to send a digital pulse to try and get the receiver to respond.

    FOD is a system for detecting metal objects on the pad (along with a receiver) that are consuming power during a power transfer phase.  This is part of WPC1.1.

    Best Regards,

    Bill Johns,  Applications Engineer

    bqTESLA Wireless Power Products

    Texas Instruments Inc

    Dallas, Texas

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