Medium or high power electronic switching circuit for DC=DC voltage converter - includes primary circuit with load capacitor, and resonant circuit providing discharge of stored energy within capacitor

摘要

The electronic switching circuit includes a primary switching circuit (I,LR,CR) operating in an all-or-nothing mode and including the load capacitor (CR). A resonant circuit (I,LX,CR) is connected to the terminal of this load capacitor (CR) in the primary switching circuit, and is excited (IX) by the switching of the primary circuit, to recover the electrical energy stored in the capacitor. The primary circuit may include a first switch (I), while the resonant discharge circuit includes a second switch (IX) controlled in synchronism with the first. ADVANTAGE - Circuit provides both medium and high power switching, esp. in DC/DC converter. Protected against ambient electromagnetic effects.