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1141 Results

Input and Output Capacitor Selection

Learn how to choose your input and output capacitors more effectively. 

Feedback Network Selection

Learn how to select the feedback network for your converter design.

On-Time Resistor Selection

Learn how to select the on-time resistor for your converter design.

Current Limit Selection

Learn to select the current limit for your converter design.

Soft-Start Time Selection

Learn to select the soft-start time for your converter design.

Converter Layout

Learn the PCB layout of the series capacitor buck converter.

Design Results

Get started designing with the series capacitor buck converter using a reference design and examine the design results.

TPS23861 PoE MSP430 Reference Code Training: Part 1

In this video, you will learn more about:

  • the TPS23861 PSE (Power Sourcing Equipment) controller
  • the three operating modes for the TPS23861
  • when you need to use the MSP430 reference code
  • how to get started

TPS23861 PoE MSP430 Reference Code Training: Part 2

In this video, you will learn more about:

  • the features implemented and high-level architecture of the reference code
  • the definition and archteciture of port power management
  • how to test and modify the reference code

Introduction

This section covers what is meter tampering, why is this a problem for utility providers, and some common ways a meter is tampered.

Detecting case tamper attacks using inductive switches

The first line of defense against tampering by bypassing current, reversing connections, and disconnecting leads is the meter case. Due to this, it is common for utilities to require some form of intrusion detection system to detect when someone opens a case.  In this section, we will cover how to detect someone trying to open the case of a meter.

Detecting magnetic tampering using hall-effect sensors

For anti-tampering, it is common to try to detect the presence of a strong magnet. In this section, we will cover the use of hall sensors for low-power detection of strong magnetic fields in three dimensions.  Details on our magnetic tamper detection reference design, TIDA-00839, will be provided as well as some of the design considerations that were kept in mind when creating this reference design.  

Hardening a meter against magnetic tamper attacks

In this section, we will cover how to harden a meter against these magnetic tamper attacks by using shunts for current sensors. For poly-phase implementations, I will go over how to use isolated delta sigma modulators to add the necessary isolation to use shunt current sensors and create magnetically immune poly-phase energy measurement systems. The TIDA-00601 and TIDA-01094 reference designs, which show how to implement a poly-phase isolated shunt measurement system, will be discussed as well as the associated AMC1304 high-side power supplies used in these designs.

Summary

In this section, a summary of the entire “Securing Smart Meters from Attack with TI Analog” training module would be covered.  This summary would cover the “Detecting case tamper attacks using inductive switches “, “Detecting magnetic tampering using hall-effect sensors “,  and “Hardening a meter against magnetic tamper attacks “ sections of the training series. Links will be provided for the reference designs and design tools that were discussed during this training series.

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