AN4209 Datasheet, PDF (1/19 Pages) STMicroelectronics – Design methodology for repetitive voltage suppressors

AN4209
Application note
Design methodology for repetitive voltage suppressors (RVS)
in repetitive mode: STRVS
Introduction
The silicon transient voltage suppressor (TVS) device such as the Transil™ was initially
specified with a power surge capability to respond to industrial standard test conditions,
especially against high-energy single transient voltages. Today, many components in
switched mode power supplies are continuously subjected to very short transient voltages.
Little data is given in TVS specifications regarding the repetitive mode operation. Therefore,
it is not easy for the designer to accurately assess the clamping voltage and power losses
under these conditions.
This application note introduces the new repetitive voltage suppressor STRVSX features,
specifically adapted to the repetitive mode operation. A design guideline is presented and
selection processes are described.
September 2013
DocID023949 Rev 2
1/19
www.st.com