How to implement Overvoltage Protection and Inrush Current Limitation using Thyristors Webinar

Webinar on how to implement Overvoltage Protection and Inrush Current Limitation using Thyristors 


This webinar was broadcasted Tuesday, September 8th | 11:30 am IST (UTC+05:30)


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During this one-hour webinar, we will discuss the use of thyristors, also known as silicon-controlled rectifiers (SCR), as active elements in limiting inrush current into the inputs of AC/DC converters with PFC.   Also, the implementation of Overvoltage Surge Protection for AC-DC Applications. 

With voltage ratings at both 600 V to 1200 V, ST’s 150 °C rated SCR portfolio enables precise control of AC line inputs to a wide variety of power levels and topologies. In particular, the ability to control the inrush current into AC powered supplies at > 1 kW is a key application of these niche devices. We will review why and how this is such a beneficial technique for the power supply engineer, especially for the latest in bridgeless PFC topologies.

We also introduce the ST SCR based in-rush current limiter solutions to replace the relays with active silicon and removing the current limiting NTC.  

You will learn:

  • What is Thyristor SCR
  • Overvoltage Protection
  • Why use Inrush Current Limiting (ICL)
  • Inrush Current Limiting (ICL) Smart Solution
  • Resources - Evaluation Boards & Application Notes


Yew-Kuan LEE

Technical Marketing Manager - Power Discrete & Sub Analog

YK LEE has more than 25 years of Technical Marketing experience in Power Discrete & Analog Integrated Circuits (IC).   He has vast knowledge of Power Management ICs such as Power supply controllers and DC-DC converters.   Besides this, he is in charge of Market development of Power Discrete components such as Power Transistors, Rectifiers, Thyristor SCR, Triac, etc. 

Satish Pawar

Senior Manager Technical Marketing - Power Discrete & Sub Analog

Experience in Semiconductor Industries more than 25 years, He is  working with ST from last 13th year as Technical Marketer, His main field of interest as dedicated market development in field of Motor Control, Home Appliances & Automotive taking care of Thyristor (SCR,Triac) and Power Discrete & SubAnalog Products

Sirichai Jaipachr

Manager Field Application Engineer - Power Discrete & Sub Analog

More than 23 Years of total experience in Power Electronics industrial as 7 Years in R&D role with Top 3rd global ranking of switching mode power supply applications  and 16 Years plus in field application engineer for Power Discrete & Sub Analog product group at STMicroelectronics, He is a champion of motor control application for South Asia Pacific.