Power Conversion Techniques for Complying with Automotive Emissions Requirements: EMI mitigation techniques
Some systems simply require more attention than others when it comes to EMI. In this section, we will examine some of those specific end applications and provide some helpful hints to reach EMI targets with each.
Before we dive into specific application-based examples of noise and EMI mitigation, let's start with the basics. What is EMI? How is this different from noise? 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.
When you run into a problem in your power-supply design, the odds are that someone else has already solved the same problem on another design. Wouldn’t it be great if you could learn from their mistakes? This five part video series focuses on some of the most common mistakes in the design and troubleshooting of low-power AC/DC power supplies, specifically focusing on the flyback topology.
Reducing power supply solution size has traditionally come at the expense of reduced efficiency and thermal performance. But with TPSM53604 and its routable lead frame (RLF) QFN packaging, this is no longer the case. See how you can leverage the TPSM53604 in your next design to buck the trend and set a new bar for power module size and performance.
TI’s Power Supply Design Seminar (PSDS) is an essential training curriculum for power supply design engineers. This on-demand training course addresses basic design principles, advanced power supply concepts and real-world application examples. Select any topic and start learning today.
Each topic includes training videos, a technical white paper and presentation PDF.
Start by selecting any of the topics below or on the left-side topic navigation.
For many engineers, layout for EMI mitigation is a black art. It may seem like the slightest adjustment could be the difference between passing or failing CISPR standards. Because of this, some power designers may shy away from using devices with switching elements as a guaranteed way to avoid the headache of reducing emissions. But this may be trading one problem for another, as switching devices generally have better efficiency and thermal performance.
Efficiently addressing EMI starts at the device selection stage. On-silicon technologies like spread spectrum or unique packaging approaches like HotRod™ QFN can help reduce EMI before we even begin the discussion of component layout and filtering.
Mitigating EMI is seen by engineers as a black art. Choose the wrong feature set - or mess with the feng shui of the PCB layout too much - and the system may not pass stringent CISPR standards.
This training series - along with all of the accompanying documentation - is an aggregation of reference materials showing engineers an easier path to design an efficient power supply that meets EMI requirements.
Designing to the tight voltage tolerances of today’s modern central processing units and field programmable gate arrays (FPGAs) is becoming more difficult as their current draw increases and becomes more dynamic. Getting the correct output capacitance mix to ensure first-time power-delivery success is no small feat with >100-A steps and slew rates in excess of 100 A/µs. Standard point-of-load design techniques no longer hold true; we need new methods to choose the output capacitance.
High-power bidirectional AC/DC power supplies are widely used as uninterruptible power supplies (UPS), energy storage systems (ESS) and onboard chargers (OBC) with with vehicle-to-grid (V2G) capability. Compared to the traditional approach ¡V using one unidirectional rectifier and one unidirectional inverter to achieve a bidirectional energy flow ¡V a bidirectional rectifier can provide advantages such as smaller size, higher power density and higher efficiency. This paper reviews topologies, design considerations and design challenges of high power bidirectional AC/DC power supplies.
How many times have you said, “I would like to prototype an idea with TI silicon but I can not get software resources" or “I don’t know how to prototype/program.”
This training shows you how to get started prototyping on TI solutions with minimal or no programming, including the following tasks: