The present invention relates to a method of dissipating a determined quantity of energy stored in a capacitor, said capacitor being connected to at least one arm comprising a first and a second switch each possessing a parasitic capacitor, said method comprising the repetition, alternately, of the following steps: a) opening said first switch and, at the same time, closing said second switch, andb) closing said first switch and, at the same time, opening said second switch, so as to charge and discharge, alternately, the parasitic capacitors of said first and second switches until said determined quantity of energy is dissipated.