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4.3 Anti-tamper Techniques to Thwart Attacks on Smart Meters— Hardening a meter against magnetic tamper attacks: Cap-Drop Based High-Side Power Supplies

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Date: April 12, 2017

In order to use the AMC1304 for isolated shunt sensing, it is necessary to provide power to the high-side power supply of the AMC1304.  One option for this high-side power supply is to use a cap-drop supply to power the AMC1304’s high side from Mains.  This module covers the advantages and disadvantages of using a  cap drop power supply to power the high-side of a AMC1304.  In addition, details will be provided on the TIDA-01094 reference design, which uses a cap-drop power supply to power the high-side of the AMC1304. This module concludes by summarizing this module as well as the other two modules in the “Detecting magnetic tampering using hall-effect sensors” section of the “Anti-tamper Techniques to Thwart Attacks on Smart Meters” training series. 

This is the last of three modules for the “Hardening a meter against magnetic tamper attacks” section of the “Anti-tamper Techniques to Thwart Attacks on Smart Meters” training series.  

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