WE meet @ digital days 2021 - virtual conference

26.-29. April 2021 - It was a pleasure

Thank you for 4 days, 36 presentations and a lot of Know-How.

What are the digital days?

It´s a digital event with a comprehensive conference programme with practice-oriented presentations for you to enjoy. All presentations were live and totally free.

Do you want to get an insight into the digital days? Then take a look at the: December 2020 & April 2021.

You can also visit our virtual exhibition booth, which is equipped with all new product highlights and information.

As always, you can stay informed about our products by looking at our online catalog.

You have questions? Please contact us: exhibition@we-online.de

Click here for the FAQs

Please open the individual timeslots below for the registration

Monday, 26th April 2021

8 AM: Keynote Speech

Ashiro & Antonio

Speaker: Alexander Gerfer, CTO Würth Elektronik eiSos Group | Duration: ca. 30 min

How must customer proximity be reinterpreted in the times of Corona and digitalization? And how must digital service offers be designed in order to generate added value for customers in the new normal and positively differentiate the provider of these services from the competition?

Perhaps the greatest challenge for companies in the pandemic: How can I maintain or even expand customer proximity and service quality under these conditions? After all, anyone who loses contact with customers now will have great difficulty surviving the pandemic and the changed world thereafter economically.

In his welcoming speech, Alexander Gerfer, CTO of the Würth Elektronik eiSos Group, not only shows how service leadership can be lived in times of digitalization and pandemic, but also how the new and innovative can be cleverly combined with conventional service offers to create a recipe for success.


9 AM: Choose the right Thermal Management solution for your design

Speaker: Sebastián Mirasol-Menacho | Duration: ca. 30 min + Q&A

Thermal Management is a topic that has been around nearly as long as electronics itself, thus there are many different solutions in the market. In this presentation, we will put ourselves in the skin of the designer to study a practical problem, analyse all available solutions and choose the best one for our design.

Click here for the recording.

10 AM: Shielding from the Dark Side of the “EMI” Force. Identify and contain noise at source using housing, grounding and PCB solutions

Speaker: Mohamed Al-Alami | Duration: ca. 30 min + Q&A

The use of conductive or magnetic shielding material can have a significant impact on EMI performance. This coupled with the potential for late stage introduction into the design makes these an attractive solution. The aim is to discuss the available components and their characteristics as well as the quick solutions that can be used. How to select and implement shielding solutions for both electric and magnetic fields will also be covered.

Click here for the recording.

11 AM: Transformer Design for EMC – practical construction techniques

Speaker: Tomas O'Brien | Duration: ca. 30min + Q&A.

This presentation wil look at the transformers impact on conducted and radiated EMI in an application. We will delve into what practical construction techniques we can employ to mitigate these potential emissions.

Click here for the recording.

1 PM: How to design a Transformer for Manufacturing (DFM)?

Speaker: Martin Romero| Duration: ca. 30min + Q&A.

In this presentation will look at some of the common problems we face in the manufacture of transformers that can lead to poor quality, extra cost, delayed shipments or reliability issues. We will look at good design practices that can help to avoid or eliminate these issues and ultimately lead to a better part for the customer.

Click here for the recording.

2 PM: Loop compensation in SMPS - Example of Buck with Voltage Mode Control

Speaker: Alain Lafuente | Duration: ca. 30 min + Q&A

This presentation gives a comprehensive overview of important parameters when designing the loop compensation to have a stable SMPS.

Click here for the recording.

3 PM: How to increase efficiency in NFC/RFID systems with Magnetic shielding

Speaker: Antonio Alcarria-Moraga | Duration: ca. 30 min + Q&A

Is the signal level of your NFC/RFID system too low? Are noise or external elements interfering? Do you want to improve the efficiency of your system?

This contribution focuses on the using of Magnetic Shielding to improve the performance and efficiency of NFC/RFID designs.

Click here for the recording.

4 PM: High Frequency three-phase PFC solutions for high power charging stations

Speaker: Francesco Gennaro, STM | Duration: ca. 30 min + Q&A

As the electrical vehicles gain diffusion in the automotive market, the battery charging is a building block of such an eco-system. In addition, the smart grid implementation is asking for smart energy availability, resulting in the need of smart and energy aware battery charger.

The presentation will provide an insight of charging station front-end, which represents the smart interface to the grid with energy management capability, with a focus on high frequency and high efficiency applications based on SiC technology and digital control techniques. In particular, a 3 level T-type converter will be introduced.

Click here for the recording.

5 PM: Case study: How ESD could generate Electro Magnetic issues

Speaker: Giuseppe Ballarin | Duration: ca. 30 min + Q&A

ESD are a dangerous overvoltage effect, but also could become an ECM issue for the application. A wrong protection design could highlight weakness of product. We will investigate this situation through a real field application and go deep into possible solutions.

Click here for the recording.

Tuesday, 27th April 2021

8 AM: Press-fit for High Current Applications

Speaker: Remco Van De Griendt | Duration: ca. 30 min + Q&A

In this webinar we want to share what is the important aspects of how to use press-fit technology in combination with high currents. How does press fit work, which aspects must I keep in mind that I can use press-fit. What is important to know for a good PCB lay-out and to assemble the PCB on a good way. After this webinar you will have more insight of these topics and you are ready to use press-fit in high-current applications.

Click here for the recording.

9 AM: Switch insider - what makes a switch a quality switch?

Speaker: Götz Schattmann | Duration: ca. 30 min + Q&A

Wonder why a switch failed under obviously “normal” circumstances ? Let’s point out some of the major components of a switch that influence the quality aspects. Points like contact plating, conductor materials, mechanical parts and plastic components will be observed in terms of their function, behavior and reliability, as well as the “How-to-Test” quality when it’s about standardization and compliance.

Click here for the recording.

10 AM: The impact of contact resistance and plating on the performance of a connector

Speaker: Dominik Zeller | Duration: ca. 30 min + Q&A

This presentation will be about the importance of contact resistance and its impact on power loss and temperature rise. We will furthermore speak about A-Spots and the resulting consequences on contact design.

As a last main topic we will consider the plating and its impact on the connector performance.

Click here for the recording.

11 AM: Sonnenwagen - Tech Talk with Team Sonnenwagen Aachen

Speakers: Kai Smit & Lina Schwering,Team Sonnenwagen Aachen | Duration: ca. 30 min + Q&A

Tech Talk with Team Sonnenwagen Aachen. Check out the team site.

Sonnenwagen is a solar racing team consisting of 45 students from the FH and RWTH Aachen. Since 2015 we are developing race cars fueled only by solar power. With our Sonnenwagen we showcase our innovations at the World Solar Challenge – a 3000 km race against teams from around the world through the Australian outback. We want to take you with us, showing you what we do and how Würth Elektronik continuously supports us along the way.

Click here for the recording.

1 PM: Requirements to EMC Components in Automotive

Speaker: Lorandt Fölkel | Duration: ca. 30 min + Q&A

Why are passive Automotive Standard Products (ASP) something different from Industrial components?
Which qualifying process are behind those products. Is just an AEC-Q200 conformity not enough to be used in Automotive applications? There are different materials used for ferrite cores, which need to be used and when?
Some components seems to be identical, there differences hidden inside, or during the manufacturing process. Let us look deeper and see the differences. An overview of ASP and they “secrets”.

Click here for the recording.

2 PM: Racing for the future – Q&A with Lucas di Grassi and René Rast (drivers Formula E Audi Sport Abt Schaeffler)

Speakers: Alexander Gerfer (CTO Würth Elektronik eiSos Group), Lucas di Grassi & René Rast (Drivers Formula E) | Duration: ca. 30 min + Q&A

Interview and Q&A session with Lucas DiGrassi and René Rast from the Formula E team Audi Sport ABT Schaeffler, with whom Würth Elektronik has a technology partnership. Here you have the opportunity to ask your questions to the drivers!


3 PM: On the Quest for an optimal DC-DC isolated gate drive supply topology: Formula E and WE-AGDT Transformers

Speaker: Eleazar Falco & Emil Nierges | Duration: ca. 30 min + Q&A

SiC-MOSFET devices are used to efficiently drive multiphase AC-Motors in industrial and E-mobility applications, amongst others, helping to achieve higher efficiency, smaller solution size and lower overall system cost. However, the optimal design of their isolated gate drive system and auxiliary supply is key to enable the SiC-MOSFET devices to unleash their top performance. In this Webinar, we will analyze advantages and disadvantages of popular isolated DC-DC topologies used to supply the power and voltage levels that SiC-MOSFETs require for optimal operation. Along the way, we will learn how the WE-AGDT were engineered and optimized together with their reference design: an extremely compact auxiliary supply solution in Flyback topology (RD001), which is currently part of the innovative MGU05 electric powertrain of the Audi e-tron F07 car competing in the 2021 Formula-E season.

Click here for the recording.

4 PM: Unleashing GaN with High-Performance Gate Driving

Speaker: Dr. Mike Wens, MinDCet NV | Duration: ca. 30 min + Q&A

Gallium-Nitride (GaN) technology is transforming Switched-Mode Power Supplies (SMPS) by realizing higher power densities and smaller power supplies. However, a GaN transistor’s switching speed is intrinsically faster than even the latest MOSFET technologies, posing significant design challenges in achieving the needed robustness to avoid catastrophic failure. Currently, the limiting factor in GaN-based SMPS performance is the gate-driver. This presentation describes the pitfalls of GaN gate-driving and the advancements developed by MinDCet for maximizing performance of a GaN power stage.

Click here for the recording.

5 PM: High current, high voltage: PDUs and EMC filters for vehicles

Speaker: Ludovic Frelin | Duration: ca. 30 min + Q&A

The rising market for battery powered and hybrid vehicles, and more globally the electrification movement as a whole is driving the need for solutions to protect, switch, measure, connect and filter high current and high voltage signals.

Würth Elektronik ICS will present its expertise in the design and manufacturing of high voltage (48V up to 1000V) power distribution units and EMC filters: We will have a look at the structure of an electrical vehicle and speak about the normative environments. The focus of this presentation will be on design blocks to realize those products.

Click here for the recordng.

Wednesday, 28th April 2021

8 AM: Impact of Cable Ferrite Sleeves on Noise Suppression above 1GHz

Speaker: Steffen Schulze | Duration: ca. 30 min + Q&A

A new view on cable ferrite sleeves and their noise suppression capabilities is presented. A theoretical approach is compared with measurements on a general transmission line setup. The investigations mainly focus on the frequency range above 1GHz.

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9 AM: Antennas’ radiation pattern and the Anechoic Chamber – a win-win!

Speaker: Ashiro Chen & Ali Muhammad Khalid | Duration: ca. 30 min + Q&A

In the last few years more and more IoT devices have been swarming the market as the Internet of things becomes a necessary part of our daily lives. However due to trend towards miniaturization, the RF front end design is becoming challenging. At Würth Elektronik we offer small and efficient multilayer antennas in our portfolio and we will be offering their radiation patterns performing our own characterization in an anechoic chamber. Here we will show the details of the setup and an overview of the results.

Click here for the recording.

10 AM: Anticipate EMC with LTSPICE

Speakers: Sylvain Le Bras | Duration: ca. 30 min + Q&A

Usually simulation focuses on the functional aspects of an electronic device, however with a bit of practice, a simple and free tool such as LTSPICE can be used to simulate EMC behavior of any device.

These simulations provides a good opportunity to use LTSPICE Components Libraries from Würth Elektronik to solve EMC issues as early as in the simulation steps, before they actually happen on your PCB.

A bit of theory and direct application in LTSpice enables every attendee to:

• setup its own virtual EMC lab

• visualize EMC signature arising from common mode and differential mode

• pick the perfect EMC solution in our portfolio

Click here for the recording.

11 AM: Thermal characteristics of high current inductors in a GaN based Point-of-Load converter

Speaker: Dr. Richard Blakey & Tobias Frei | Duration: ca. 30 min + Q&A

The presentation discusses thermal considerations of high current inductors, looking at datasheet parameters, RedExpert inductor selector and thermal simulation, using a GaN based Point-of-Load converter as an application example.

Click here for the recording.

1 PM: Easily accessible design & simulation of an EMI filter with realistic component models

Speaker: Niall Rice | Duration: ca. 30 min + Q&A

Determining suitable components for a low-pass filter, to make your DC-DC converter EMC compliant, can be a time consuming and largely empirical. EMI Filter Designer takes out the guess work and reduces time and cost in developing a filter for conducted differential noise. EMI Filter Designer is a low entry, easy to use tool, which is part of WE REDEXPERT. This online tool-set offers easy ways to find the best components for your application.

Click here for the recording.

2 PM: Improving the EMI performance of isolated power modules

Speaker: Timur Uludag | Duration: ca. 30 min + Q&A

The presentation will show you a practical step-by-step approach to EMC interference suppression for an isolated power module with a strong emphasize on unregulated narrow input range modules. As a basis for proper EMI filter design, the principle of operation of the power electronics topology within this module, in this case self- oscillating push-pull converter, will be explained. Subsequently, the parasitics that have an effect on the EMI performance are shown and discussed. Key parasitics considered here are the transformer inter-winding capacitance, coupling capacitance between the neutral and physical earth, and the equivalent series resistance (ESR) of the input capacitor. Common mode current is generated by the rate of change of the voltage with time, dv/dt, at the switching node. A bridging capacitor from primary to secondary will be introduced and explained as a solution. The webinar will be closed with a rule of thumb to determine the value of the bridging capacitor. We will provide a sneak preview of our upcoming power module with an integrated bridging capacitor.

Click here for the recording.

3 PM: Advanced Solution Center - The solution to all special and unusual PCBs using the example of stretchable circuit boards

Speaker: Jürgen Wolf | Duration: ca. 30 min + Q&A

With the Advanced Solution Center (ASC), the PCB division of Würth Elektronik is able to offer the possibility of making special and unusual PCB designs come true - and not just as low-yielding prototypes, but always with the background of series production. This presentation introduces this innovative division of Würth Elektronik Circuit Board Technology and uses the example of stretchable printed circuit boards to show how unusual PCB needs can be turned into hardware suitable for series production.

Click here for the registration.

4 PM: WE backup your application – hot swappable supercapacitor backup solution

Speaker: Frank Puhane | Duration: ca. 30 min + Q&A

If the power supply of the application breaks down, this is not a pleasant situation. Würth Elektronik eiSos built up a demonstration, which shows a hot swappable backup. The input voltage is 24V and the backup output voltage is 12 V for a normal industrial power rail application. The available output power is 30 W (12 V @ 2.5 A).

We also talk about the classification of Supercapacitors, the model parameters, performance and the charge-, discharge and frequency behavior. For the power stage, we used the software for and from the LTC3351 from Analog Devices.

Click here for the recording.

5 PM: Back-to-Basics - Specifying quartz crystals and oscillators

Speaker: Paul Smith | Duration: ca. 30 min + Q&A

Today the usage and applications for quartz devices is rising with each new technological breakthrough. Progressively, more engineers become responsible for specifying crystal design parameters for their own electronic solutions. This drives the need to better understand crystal and oscillators. In this presentation, we will explain how each of the different parameters make up the overall specification and what device values are feasible depending upon the operating conditions.

Click here for the recording.

Thursday, 29th April 2021

8 AM: Simultaneous Wireless Power Transfer with Near Field Communication

Speaker: Christian Merz | Duration: ca. 30 min + Q&A

Many state of the art WPT/NFC systems do not work simultaneously. WE presents different ways to enable simultaneous WPT and NFC operation. It is described step by step, how the simultaneous operation can be realized. As an example, we transfer data from a time of flight sensor simultaneously to a NFC target, which is powered wirelessly by a WPT transmitter. The transferred data is shown at a display on the receiver side.

Click here for the recording.

9 AM: Wireless Power Transfer enables IIoT – WE cut the cord!

Speaker: Cem Som | Duration: ca. 30 min + Q&A

Our future mobility will be flexible, independent, digital, connected but always cordless. Wireless power transfer and charging becomes more and more visible in public through electrical toothbrush and charging of smartphones and tablets. What are the technologies behind? What applications use it today? What are the limits and concerns? What will be the future? Which standards drive the technology? What are the opportunities and challenges ? What will change in user behavior and light electrical vehicles when the technologies will be established more broadly? Will a vision of a cordless world have a chance to become reality ?

The presentation will try to give facts, answers and opinions to those questions. It will paint a vision of a cordless world of short distance traffic as a paradigm shift and discuss that vision with the audience.

Click here for the recording.

10 AM: Würth Elektronik reveals the questions about optocoupler phototransistor types

Speaker: Sarah Vogg | Duration: ca. 30 min + Q&A

Our optoelectronics product managers will introduce you to the newest products from their portfolio of optocouplers. In addition, they will show you the most important features of the optocouplers and answer your most important questions.

What is an optocoupler and what are optocouplers actually needed for? What does Würth Elektronik offer in the field of optocouplers? What advantages does the customer have when buying optocouplers from Würth Elektronik? And how is the lifetime of Würth Elektroniks´ optocouplers?

Click here for the recording.

11 AM: IR LEDs or VCSEL – When and where to use them

Speaker: Dr. Zhelio Andreev | Duration: ca. 30 min + Q&A

IR Light emitter are all around us – unfortunately invisible for our eyes. Although it helps us in many everyday tasks, helping for our security and better wellbeing, without even realizing it is around us. WE will take the time and show you some of the main applications for IR emitter, differentiating between the VCSEL laser and IR LEDs. This can help you to see the many possibilities in our everyday life where we can include IR emitters and some information how to implement those. Come and join us this invisible adventure with IR Light.

Click here for the recording.

1 PM: Wirepas Mesh: From Concept to Prototyping

Speaker: Matthias Hauser & Luca Settembre | Duration: ca. 30 min + Q&A

Wirepas Mesh is a connectivity protocol for radio modules, optimized for large scale and energy efficient wireless mesh networks. This innovative technology can be used to create large IoT networks, for example using battery-powered sensors, in which each node also functions as a router. In this session, we would like to present the technical characteristics and applications of Wirepas Mesh protocol. Using the Würth Elektronik Thetis-I Evaluation Kit for a live demonstration, we will show how to connect devices in a Wirepas Mesh prototype network in few easy steps.

Click here for the recording.

2 PM: Hardware Design-In Hints for Sensors

Speaker: Julian Saavedra Molano | Duration: ca. 30 min + Q&A

MEMS and semiconductor-based sensors are present on most of the electronic applications we can think of, ranging from IoT applications to smart phones. These sensor technologies provide high reliability, accuracy, precision and very low power consumption, all highly miniaturized in a few mm² size. These sensors can be sensitive to the PCB design, location on the PCB and mounting process. In order to take the best advantage of this technology in the target application, there are hardware guidelines like PCB layout rules, soldering and mechanical constraints that should be met.

Click here for the recording.

3 PM: Simple and secure cloud connectivity solution for IoT applications

Speakers: Adithya Madanahalli & Miroslav Adamov | Duration: ca. 30 min + Q&A

The Internet of Things (IoT) can be broadly defined as an umbrella term for a range of technologies that enable devices to connect and interact with each other. Industry 4.0, the Industrial IoT (IIoT) is the digitization of industrial assets and processes. Secure networking of the digital world with the world of machines holds the potential for profound benefits to the global industry. The core task of any IoT solution is to get data from the field to the cloud where analysis of the same generates the desired value proposition for the application. This webinar proposes an elegant solution to achieve this task based on Calypso Wi-Fi module using an IoT example application.

Click here for the recording.

4 PM: 27 W USB Type-C Power Delivery 3.0 with PPS adapter reference design

Speaker: Filippo Bonaccorso & Fabrizio Di Franco, STMicroelectronics | Duration: ca. 30 min + Q&A

The STEVAL-USBPD27S 27W AC-DC adapter reference design works as USB Power Delivery Provider with a single USB Type-C port supporting up to 5A output, PPS and featuring adaptive synchronous rectification. The STEVAL-USBPD27S accepts a wide range of input voltage and delivers two fixed PDOs (5V@5A, 9V@3A) and two APDOs (5VProg@5A and 9VProg@3A). The adapter meets the most stringent energy saving recommendations (EU CoC – Tier 2 ver. 5 and DOE Level VI) ensuring < 40mW of no load power consumption and has been tested to verify conducted noise emissions and compliance with the EN55022 (Class B).

Click here for the recording.

5 PM: Make electronics autonomous & powered from environment

Speaker: Lorandt Fölkel | Duration: ca. 30 min + Q&A

Introduction to Energy Harvesting, what type of ambient energies are available, what are the challenges in converting (& storing) these energies into usable energy? Examples of real life use cases demonstrating that Energy Harvesting has already progressed from the laboratory to commercial applications. Some power electronics related applications for Energy Harvesting. How to convert the ambient energy to usable energy? In case that are problems with energy & voltage levels & their sporadically, how can be solved. Much of the energy stored can be lost through leakage. Which tools/evaluation kits are available to develop self-powered electronics? New low power converter IC’s are developed which can be powered from multiple harvester at same time and manage the energy to power extreme low power microprocessors which have RF modules build in and can communicate wireless and could be totally autonomous powered.

Different development kits are available where many scenarios can be tested and evaluated, on the way to design autonomous electronic devices without maintenance.

Click here for the recording.

Check out our virtual booth (Update will come to the Digital Days)

Click on the picture to get to the virtual booth