Würth Elektronik Watts Up Podcast

Chip bead ferrites are the best components for reducing high frequency noise above 10 MHz, but being the first components and the last components in the chain exposes chip bead ferrites to heavy transient currents. In this podcast, we discuss how circuit designers can now select parts that filter noise with minimal impact to power efficiency and will handle large current pulses with excellent reli...

Conducted interference occurs in the input circuit, whereby other electrical equipment can be disrupted, so the conducted interferences are first checked at the beginning of an EMC test of power supplies. In today's podcast, based off an Application Note, we discuss the procedure for examining differential mode interference in the input circuit of DC/DC switching regulators. Download the Applicati...

The market for Bottom Termination Components (BTCs) is growing rapidly, but these components have brought new challenges in design and assembly processes. The large areas of the solder terminals bring many advantages with them, like dissipating heat of the component. However, if the assembly process is not properly adjusted, then this can cause voids under the component. In today's podcast, we'll...

Advancements in lighting, heating, watering, and control systems have allowed the construction of vast, artificially lit, indoor greenhouses. One of the most significant future advancements in the viability of indoor greenhouses has been the advancement of LED technology. As advancements in their fabrication have progressed, LEDs have become the preferred solution for indoor cultivation. In this p...

EMI is a common problem engineers face when designing a new application. How can a developer solve EMC problems on the circuit board or prevent them from occurring? What has to be considered and where does it make sense to use a filter? Which system impedances are there and what are the deciding factors for which filter topology should be used? In this podcast, based on a popular WEbinar, we answe...

Choosing the appropriate components is vital for the efficiency of DC/DC switching regulators with relatively high input and output currents. A high-efficiency switching regulator is market-ready if it, and the end product, comply with all necessary EMC standards; meaning more filters must be included at the input and output to reduce interference. With high input and output currents, it is diffic...

Recently, the need for disinfection technologies has skyrocketed. One of these technologies is disinfection using UV-C LEDs. Disinfection with UV-C LEDs can help reduce the spread of viruses such as the Corona virus as well as other germs. In this podcast episode, based on an application note and a WEbinar, the working mechanism behind disinfection with UV-C radiation is discussed, as well as exam...

This Application Note outlines the components needed to protect USB 3.1 devices and attenuate EMI that may cause the device to fail EMC testing. This will be demonstrated in USB Type-C dongle to characterize the effectiveness of the components. For information and components suitable for USB 2.0, please refer to the following Application Notes available at www.we-online.com/appnotes .  ANP002 – Th...

Modular jacks (MJ) connectors and cables are broadly used to bring Ethernet signal up to 10 Gb/s depending on the category of the product. It is also possible to deliver power through it with PoE. In this episode, we will study if recommendations for the WE-MJ connectors can be extended up to Type 4 and demonstrate the capabilities of modular jacks in case they are accidently used as a disconnecto...

The trend to miniaturize wireless communication devices has led to decreased PCB sizes and increased component densities. Although this shift to miniaturized technology has aided many areas of electronic design, it constrains RF front-end design. Multilayer chip antennas are an interesting choice for engineers, who are restricted by cost and space requirements in wireless system design. Low temper...

Magnetic Field Interferences are increasing in electronic devices due to a number of factors including reduced separation distances of PCB's, Integrated Circuits and many other sensitive components. Magnetically coupled communication technologies leads to more complex layout and proximity considerations. With Ferrite materials it is possible to manage and predict magnetic flux flow and thereby imp...

Rated current values found on datasheets serve as a guide for the selection of power inductors. However, the temperature rise in power inductors can be influenced by many factors that are not always reported in datasheets by all manufacturers giving a false sense of what the rated current values actually represent. In this podcast, we discuss how the behavior of a single inductor in different cond...

Modern power supplies need to reduce power loss in order to remain efficient. Switch mode power supplies and DC/DC switching controllers are state of the art and allow great efficiency, but if the design of the circuit and circuit board layout is less poor, then this can result in increased emission of radio interference voltage. In this podcast, we are discusses the systematic implementation of i...

Ringing is a common term that refers to the undesired oscillation which happens when a power semiconductor switch turns on or off in the presence of parassitic inductance and capacitance. In this podcast, learn how ferrite beads placed in series with the bootstrap pin of buck regulators can make excellent ringing control components, and when applied properly they can be used to treat the source of...

In our last podcast, we began discussing the advanced function and design of power inductors. We continue our series with the second half of our popular advanced WEbinar on the topic. Maximiliano Padilla, Technical Chat Navigator at Wurth Elektronik will complete this series with the construction of an inductor, specifics and differences in wires, and finishing with a discussion on the skin effect...

In today's podcast, we are diving in to the advanced function and design of power inductors. This podcast comes from our popular advanced WEbinar on the topic and is divided in to two series. Maximiliano Padilla, Technical Chat Navigator at Wurth Elektronik will begin define inductance and inductors, describe and cover the Q factor, and explain the differences in inductors and their materials. 

Ethernet is rapidly gaining adoption as the dominant networking method for an increasing number of applications outside of IT. One of the main problems is the operating environment. As industrial initiatives, such as Industry 4.0 and the broader Industrial Internet of Things (IIoT) gather momentum, the need to manage technology architecture across such contrasting automation landscape is becoming...

In last week's podcast, Würth Elektronik's own Cem Som, Director Europe for custom magnetics, discussed the basics of Wireless Power Transfer and basic physics. Today's podcast comes directly from a recent WEbinar presented Cem and is the second of a two part series. This webinar develops from first principles through to advanced coil design and implementation. New content includes different appli...

Wireless Power Transfer is one of the most innovative topics for the next generations. Today's podcast comes directly from a recent WEbinar presented by Würth Elektronik's own Cem Som, Director Europe for custom magnetics. Cem comes to us with many years of experience and many technical writings on wireless power technology.   This webinar is the first of a two part series. Starting with the basic...

Last week, we replayed one of our most popular WEbinars- Basics of Power Inductors with our presenter, George Slama, Senior Application and Content Engineer with Wurth Elektronik. Today, we continue our series on power, with the sequel webinar "Basics of Power Transformers," and discuss the differences between transformers and inductors and key functions they provide. Watch the WEbinar on demand.

This podcast comes directly from a recent WEbinar presented by Würth Elektronik's George Slama, Senior Application and Content Engineer. This first session covers inductors and how to specify and select the correct one.    Replay the WEbinar on demand.  

In this episode, we bring you a webinar from Swaroop Vaidayanath; product definition engineer with Würth Elektronik. Swaroop focuses on the flyback transformer design with multi-isolated outputs used in PMP21927 and discusses the many design considerations taken to achieve high efficiency, while maintaining a low profile part for power tool applications.   Watch the WEbinar on demand here.   Downl...

In last week's broadcast, we began our discussion regarding the design of a USB but from a viewpoint of EMC considerations. We discussed the hardware and components, EMC circuitry, and the use of a USB filter. This week, we begin with the filter for DC supply. REFERENCED IMAGES:  Figure 11: Figure 12: Figure 18:  Figure 19: Figure 21: Figure 22: Figure 24: Figure 27: Download the Application Note:...

Today's discussion centers around the Universal Serial Bus, commonly known as USB.  We'll be discussing the interface from an EMC point of view, and talk about technologies, hardware and components, PCB layout, and more. FIGURE 1: REFERENCED IMAGES IN THIS PODCAST: FIGURE 2: FIGURE 3: FIGURE 4: FIGURE 5: FIGURE 7:   FIGURE 8:  FIGURE 10: FIGURE 11:

Although the majority of AC offline converters and switching converters that run from hazardous voltage, include galvanic isolation for safety, there are many applications where non-isolated circuits can be used. Where mechanical isolation protects the user and service personnel from contact with hazardous voltages, or for where both input and output voltage are on the primary side of isolated con...