How to design an efficient offline auxiliary power supply workshop

Join ST and Würth Elektronik to learn how to design an efficient offline auxiliary power supply with low to medium output power and select the proper components

Discover how eDesignSuite, ST’s easy-to-use on-line design tool, helps you rapidly select and determine the optimal configuration for your power management design; reducing your final cost and improving your time to market.

STMicroelectronics & Würth Elektronik invite you to this workshop that will examine the theory, components and PCB layout to ensure the best design for the following topologies:

  • Low-power buck topology for mains applications
  • Medium-power quasi-resonant flyback topology for power converters

Benefits you will take away

  • Technical overview of buck and quasi-resonant flyback topologies
  • Live session using eDesignSuite to analyze the impact of various components on circuit voltages and currents to determine the best design for your application
  • Live session using an oscilloscope to observe waveforms in real-time, to study circuit voltages and currents and how they affect your application
  • Tips and tricks to ensure the best PCB layout for your application

Registration information

Registration for this event is closed.


Workshop agenda:

08:30 - 09:00 Registration
09:00 - 10:15 Overview of buck and flyback topologies for mains applications in auxiliary supplies
10:15 - 10:45 Presentation of ST’s VIPerPlus series of converters for low power auxiliary power supplies
10:45 - 11:00 Coffee break
11:00 - 11:45 Power inductors for high-voltage buck converters
11:45 - 12:30 Design considerations for quasi-resonant flyback converters and PWM controllers
12:30 - 13:45 Lunch
13:45 - 14:30 Live session: eDesignSuite for easy design (buck and flyback topologies)
14:30 - 15:15 Transformer design considerations
15:15 - 15:30 Coffee break
15:30 - 16:15 Live session: Using oscilloscope waveforms to better understand circuit voltages and currents
16:15 - 16:30 Conclusions and summary


The ST session will be hosted by Jiri SMUTKA. With a Masters' degree in electrical engineering from the Czech Technical University (CTU), Jiri joined ST in 2004 working in the Power Application Lab in Prague, covering low- and medium-power SMPS. His expertise focuses on topologies including buck, flyback and full-bridge LLC resonant converters.

Jiri will be the ST’s speaker for all workshops.
After working for Traco Power Solutions in Ireland as a SMPS development engineer for 15 years, Tomás O’BRIEN joined Würth Elektronik last year as a magnetics design engineer mainly focused on developing custom transformers and inductors. 

Tomás will be one of Würth Elektronik’s speakers for the workshop in Hertogenbosch, Netherlands.
Piotr GIERWIATOWSKI an experienced engineer in EMC solutions, oriented for practical knowledge. For the last few years he was involved in improvement of power supplies of different customers from magnetics point of view. Piotr is well versed in current technical trends and in the local electronic market environment.

Piotr will be Würth Elektronik’s speaker for the workshop in Krakow, Poland.
Alexander LANG has a background in Electrical Engineering. He is Senior Product Manager for Non-Isolated Power and joined Würth Elektronik 10 years ago.

Alexander will be one of Würth Elektronik’s speakers for the workshop in Berlin, Germany.
Lorandt FOELKEL is application engineer for EMI/EMC situation and switched mode power supply (SMPS) design for industrial and automotive electronics applications. He is the company spokesperson for EMC & Electronic Design seminars and holds over the World, since 2005, more than 700 seminars to design engineers, giving training to easy understanding the EMC problems at board level.

Lorandt will be Würth Elektronik’s speaker for the workshops in Istanbul, Turkey and Brno, Czech Republic.
  After working as an EDA toolchain Support Engineer at Transfer in the Netherlands and later as an semiconductor Field Sales Engineer for Avnet Alex SNIJDER moved to Würth Elektronik in 2011.
At Wurth Elektronik he is working as Field Application Engineer in the field of power design and EMC supporting all of the passive components.

Alex will be one of Würth Elektronik’s speakers for the workshops in Hertogenbosch, Netherlands and Berlin, Germany.

Locations and dates

Location Date Status
Hertogenbosch, Netherlands Wednesday, 11st September 2019 Closed
Krakow, Poland Thursday, 14th November 2019 Closed
Berlin, Germany
Wednesday, 20th November 2019 Closed
Istanbul, Turkey Wednesday, 27th November 2019 Closed
Brno, Czech Republic Wednesday, 4th December 2019 Closed


  • Technical English and basic knowledge of electronic systems and devices.
  • Please bring your laptop (Wi-Fi capable) with Microsoft Excel or compatible software installed.
  • It is recommended to create your eDesignSuite account before the workshop to save time.

Additional product information

Inductors for auxiliary power supplies:

Capacitors for auxiliary power supplies:


Würth Elektronik eiSos, manufacturer of electronic and electromechanical components, is
an ST Authorized Partner