Patent ID: 7190596
Filing Date: 2007-03-13
Classification: H02M,H05B,Y02B

Abstract:
1. A circuit arrangement for a converter with switches for chopping an input DC voltage into a chopped DC voItage, comprising control means for controlling the switch-on times of the switches, in which switch-on times of the switches alternate with each other and are separated from each other by dead-time phases, and circuit elements comprising a resonant circuit having at east one capacitor and at least one coil for converting the chopped DC voltage into an output voltage, wherein: means for determining current flowing in the resonant circuit are provided, the control means include a comparator that compares a value dependent on the current flowing in the resonant circuit with a threshold value, and the circuit means control the switching of the switches in dependence upon the comparison result to control the dead-time phases.