Application Notes
Protection of semi-conductors
Overvoltage and clamping due to switching of semi-conductors. Products to offer
Snubbers FSB 0.1 to 3µFup to 2kVdcClamping FFVE 12 to 400µFup to 1.9kVdc ENERGY STORAGE
APPLICATIONS FUNCTION, PRODUCTS
Medical: cardiac defibrillatorIndustrial and military: laser
telemetry, flash lamp
DCFiltering
Between battery and converter, a capacitor is needed.Its main purpose is to filter the ripple coming from the con-verter, to avoid damaging the battery.Metallized Film
Capacitors are able to fulfill this function using2 or 3 cases (only electrolytic can not).
FUNCTION, PRODUCTS DCFiltering
Stored energy is used to generate electrical pulse. Products to offer Products to offer
FDV1 5 to 80µF1000 to 1700V FFVE 12 to 400µF300 to 1900Vdc
FDBB 70 to 150µF1800 to 3000V* FFVI 47 to 275µF500 to 1100VdcAccording to quantity, a custom design could be developed,achieving the total function with a single case.
*Specific FDBB can be offered with energy density over more than 1.5J per cc. FILM TECHNOLOGY TO REPLACE ELECTROLYTIC TECHNOLOGY WINDMILL
ABSTRACT APPLICATIONS
Trend of industrial and traction market for power conversionis to replace electrolytic capacitors by film technology.This trend is generated by many advantages that filmtechnology is offering. Among these advantages, we have:*High rms. current capabilities up to 1Arms. per µF*Overvoltage withstanding up to 2 times the ratedvoltage*Handle a reversal voltage
*High peak current capabilities
*No acid inside
*Long lifetime
*No storage problemHowever, this replacement won’t be done <
>,but for the function.Indeed, despite the very big improvement of film technology,replacement solution won’t be possible for each application,
there will be several approaches to do this.In order to help the user to see clear, we will present someconcrete figures where film gives a major benefit instead of
electrolytic technology. Energy power supplied by the wind, new wind mill generation
use electronic converter in order to control power, phase and
voltage.
FUNCTION, PRODUCTS DCFiltering
The purpose of the product is to filter voltage ripple.TPC has developed controlled self-healing range allowingreliable and competitive solution compare electrolytic
technology.See calculation example how to replace electrolytictechnology on pages 58 and 59. Products to offer FFLC 1120 to 8800µFup to 1200Vdc
APP NOTES 57