DC-DC UMWANDLER

摘要

A DC-DC converter includes a switch (S 1 ) which periodically connects an inductor (L) to a DC-input voltage (Vi) during an on-period (Ton) of a period time (Tp). The operating frequency (fo) of the DC-DC converter is the inverse of the period time (Tp). An output (O 1 ) of the DC-DC converter is coupled to the inductor (L) to supply an output voltage (Vo). A controller (CO) controls the operating frequency (fo) of the DC-DC converter to be substantially proportional to the output voltage (Vo) to obtain a substantially constant average duration of the on-period (Ton) as function of the output voltage (Vo).