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185 Results

Flexible interface (PRU-ICSS) for data acquisition using multiple ADCs

Date:
June 3, 2019

Duration:
07:11
This video covers flexible interface between the PRU-ICSS and multiple ADCs to achieve simultaneous and coherent sampling (TIDA-01555).

TI Precision Labs – Protecting Low Voltage ADC - Improved Solution

Date:
May 1, 2018

Duration:
07:15
This video shows how to move the current limiting resistor inside the feedback loop to improve settling performance and current limiting.
Protecting ADC with TVS Diode

TI Precision Labs – Protecting ADC with TVS Diode

Date:
May 1, 2018

Duration:
19:22
This video shows how to select TVS diodes, and current limiting resistors to protect ADC.

TI Precision Labs – Protecting ADC with TVS Diode – Improved Solution

Date:
May 1, 2018

Duration:
14:43
This presentation shows how a PTC-Fuse can be added to improve the performance of a TVS diode protection circuit.
South Asia Industrial Webinar

2018 South Asia Industrial Webinar Series

The topics will cover system design issue and solution for Building Automation, Power Delivery and Test & Measurement. TI experts introduce the latest technology and innovation system reference design. Discover ways to enhance the time-to-market and create safer and efficient industrial systems.

South Asia Industrial Webinar

SAR ADC Design

Targeting the Test and Measurement application, this section includes many topics relevant to designing with SAR ADC devices.

How to design high-accuracy CT-based split-phase electricity meters using standalone metrology ADCs

As processing requirements for electricity meters gradually increase, it becomes increasingly difficult to find one device that meets both the processing requirements for adding advanced metrology features to smart meters while also accurately sensing metrology parameters, such as RMS voltage, RMS current, and active power.  To deal with this design challenge, one option is to use a separate metrology microcontroller and a standalone ADC.

Current sensor and metrology architecture options

This section compares two types of current sensors used in electricity meters: current transformers and shunts.  In addition, it discusses three different architectures for sensing the voltage and current samples used to calculate the metrology parameters.  These architectures include a SoC-based architecture, AFE-based architecture, and ADC-based architecture.

Introduction to TIDA-010037 reference design

This section provides an overview of the TIDA-010037 reference design, which uses the ADS131M04 delta sigma standalone ADC for sensing the voltage and current necessary to calculate metrology parameters.  The TIDA-010037 design targets Class 0.1 split-phase current transformer meters.

TIDA-010037 hardware design

This section provides an overview of the hardware used in the TIDA-010037 design, which includes information on the eFuse circuit used to create a current limited rail for connection to an external communication module.  In addition, this section discusses the circuits used to translate the Mains voltage and current to the voltage waveform sensed by the ADS131M04.

Designing software for split-phase electricity meters that use standalone ADCs

This section covers the initialization code and algorithms that can be used to calculate metrology parameters in a split-phase system using the sensed voltage and current samples

Calibration and metrology accuracy results

This section discusses the procedure used to calibrate the TIDA-010037 design and the results obtained with this design.

Summary

In this section, a summary of the entire “How to design high-accuracy CT-based split-phase electricity meters using standalone metrology ADCs” training module would be covered.  Links will be provided for the reference designs that were discussed during this training series.

How to design 1-phase shunt electricity meters using standalone metrology ADCs

As processing requirements for electricity meters gradually increase, it becomes increasingly difficult to find one device that meets both the processing requirements for adding advanced metrology features to smart meters while also accurately sensing metrology parameters, such as RMS voltage, RMS current and active power.  To deal with this design challenge, one option is to use a separate metrology microcontroller and a standalone ADC.

Current sensor and metrology architecture options

This section compares two types of current sensors used in electricity meters: current transformers and shunts.  In addition, it discusses three different architectures for sensing the voltage and current samples used to calculate the metrology parameters.  These architectures include a SoC-based architecture, AFE-based architecture, and ADC-based architecture.

Introduction to TIDA-010036 reference design

This section provide an overview of the TIDA-010036 reference design, which uses the ADS131M04 delta sigma standalone ADC for sensing the voltage and current necessary to calculate metrology parameters.  The TIDA-010036 design targets Class 0.5 single-phase two-wire meters with shunt current sensors and has a compact, magnetically immune cap-drop power supply to power the design from AC mains.

TIDA-010036 hardware design

This section provides an overview of the hardware used in the TIDA-010036 design, which includes the circuits used to translate the Mains voltage and current to the voltage waveform sensed by the ADS131M04.  In addition, it covers the TPS7A78-based cap-drop power supply used in this design.

Designing software for 1-phase electricity meters that use standalone ADCs

This section covers the initialization code and algorithms that can be used to calculate metrology parameters in a single-phase system using the sensed voltage and current samples.

ADS131M04 current detection mode for detecting neutral removal tampering

This section discusses current detection mode, which is a special low-power mode of the ADS131M04 standalone ADC, that can detect the presence of current when someone has tampered with a meter by removing its neutral connection.

Calibration and metrology accuracy results

This section discusses the procedure used to calibrate the TIDA-010037 design and the results obtained with this design.
185 Results
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