IGBT Snubber


Maximum collector currentICmax =A
Maximum collector emitter voltageVCE =V
Maximum collector voltage rise timetr =µs
Maximum collector current fall timetf =µs
Switching frequencyfs =kHz
Duty cycle (conduction period 0..1)d =*100%
Calculate R & C
Snubber capacitorC =nF
Snubber resistor (Discharge within 3*ton)R =Ohm
Discharge current IGBT during tonIdis =A
Minimum value of R to ensure that IC < ICmaxRmin =Ohm
IGBT on time (conduction interval)ton =µs
Maximum resistor power ratingPR =W
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Source:High frequency Switching Power Supplies, George Chryssis