Direct current converter and direct current conversion method

摘要

The converter has a filter (1) i.e. capacitor-input filter, energetically decoupling input from a switching choke (2) and a switching element (SW1) at a switching frequency and/or harmonics in a region of 100 kilo hertz to 1 mega hertz. The filter is formed such that the filter has impedance ten times in comparison to an input capacity (CB1) at the switch frequency. Capacitors (CFHF1, CFHF2) are formed such that the capacitors completely compensate effect of reducing the capacitance value due to an applied bias voltage by over sizing of nominal voltage-or capacitance value. An independent claim is also included for a method for switching direct current voltage.