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Low EMI and Noise performance with DC/DC switching regulators

Concepts of Switching Regulator EMI and Noise Mitigation

Before we dive into specific application-based examples of noise and EMI mitigation, let's start with the basics. What is noise? What is EMI? What is ripple? How are they measured? What are some common approaches to limiting their effects? This section discusses these topics with a more conceptual approach to serve as a primer for the rest of the series. 

Resources:

Low EMI and Noise performance with DC/DC switching regulators

EMI and Noise Mitigation Techniques in Practice

Now that we understand the sources of EMI and noise in switching regulators, and some of the common approaches to mitigating each, let's take a closer look at real-world examples of reducing their effects. In this section we will examine the impacts of various mitigation techniques to help you decide which approach makes the most sense in your design. Techniques covered in this discussion include external component placement, filter options and design, frequency manipulation via spread spectrum or dithering, snubbers, boot resistors, and more.

Resources:

Low EMI and Noise performance with DC/DC switching regulators

Achieving low noise and high efficiency for noise-sensitive analog loads

Noise and EMI can be detrimental to sensitive analog signal chain circuitry. For this reason, many engineers automatically default to linear regulators. But, in doing so, they are essentially trading one problem (noise) for another (heat dissipation). In this section we will discuss what types of signal chain loads can be driven directly by a switching regulator to get low noise and EMI without sacrificing efficiency. We will also discuss when a linear regulator is absolutely needed to reach levels of noise not possible with a switcher.

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Low EMI and Noise performance with DC/DC switching regulators

Low EMI and low noise DC/DC conversion in Automotive applications

Because of the potential havoc that interference can wreak in radio and safety critical systems, automotive electronics are subject to the most stringent EMI standards- the most common being CISPR25 Class-5. The materials below provide a discussion around the sources of EMI in an automotive environment and a comprehensive blueprint to understanding how to minimize it's effects.

Resources:

Low EMI and Noise performance with DC/DC switching regulators

Achieving low noise and low EMI performance with DC/DC switching regulators

Mitigating switching regulator EMI and noise is seen by engineers as a black art. Mess with the feng shui of the PCB layout too much, and the system may not pass CISPR standards. Because of this, many power designers simply turn to linear regulators as a guaranteed way to avoid the headache of reducing emissions.

C2000 Devices in Sensing and DSP Processing Applications

C2000™ Devices in Sensing and DSP Processing Applications

Learn how C2000 devices excel in sensing and DSP processing applications.

Over-voltage Protection for Multiplexers

System Level Protection for High-voltage Multiplexers in Muti-channel Data Acquisition Systems

  • In the first module, The architecture of a multi-channel data acquisition system and how a multiplexer can be used to facilitate the implementation. Possible causes of fault condition in a typical data acquisition system are discussed, and how the fault condition can severely impact the normal operation of the system is explained.
  • In the second module, protection schemes that can be implemented to protect the system in fault condition using discrete components are discussed.

Power factor correct (PFC) basics and design considerations

Applications Engineer Jason Tao discusses PFC basics, topology comparisons and design considerations to achieve a cost-optimized and efficient PFC design.

battery management systems on-demand technical training

Battery chargers: pick your application

Select the right charger specific for your application. Check our battery management solutions for various applications. 

battery management systems on-demand technical training

Battery chargers: "How to..." problem solvers

Get answers here for some of your "How to..." questions. 
battery management systems on-demand technical training

Battery gauges: get help for your device

Get design tips for some of our most popular gauges. 
battery management systems on-demand technical training

Battery monitors

We offer a portfolio of stackable and non-stackable monitors for automotive and non-automotive applications. Watch videos to learn more or check out our website

battery management systems on-demand technical training

Battery management tools: crash course

Not sure where to get started? Start with the right tools. These videos will guide you through available tools and their configuration. 

How to synchronize high speed multi-channel clocks?

Modern high speed end equipment's like oscilloscope, 5G wireless communication tester and RADAR requires multichannel transceiver system. The biggest challenge is to provide the high frequency, low phase noise, multiple synchronized clocks to each transceiver's data converters and local oscillator. This training will explain how to synchronize the high speed multi-channel clocks and expand for high channel count clocks requirement.

Redefining High Resolution and Low Noise in Delta-Sigma ADC Applications

Date:
September 23, 2015

Duration:
56:25
Explore TI’s unique Delta-Sigma ADC architecture helps redefine what “high resolution” and “low noise” means for designers with real-world examples and designs.

Optical Distance/Displacement Sensor Measurement Based on ToF and Phase Shift

Date:
November 10, 2016

Duration:
09:35
This training module provides an overview of laser rangefinding techniques using high-speed signal chain devices.

TX Signal Chain Implementation for Wide Band and High Frequency Signal Generation

Date:
November 10, 2016

Duration:
13:45
The system design for an arbitrary waveform generator (AWG) and its functional blocks, including a discussion of the AWG amplifier path and design methodology.

Resolving the Signal with Delta-Sigma ADCs

Date:
November 17, 2016

Duration:
07:31
Introducing noise concepts and the difference between device-level and system-level noise performance helping bridge the gap for hi-res data acquisition systems

What is a voltage reference?

Date:
January 9, 2017

Duration:
20:24
Learn more about TI's voltage reference products in this video.
85 Results
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