Dc-to-dc converter with flyback period detector circuit

摘要: A dc-to-dc converter includes a transformer having primary winding connected to an input rectifying and smoothing circuit via FET or like switching device, secondary output circuit. resonance capacitor is in parallel with the device. switch control cyclically turns device on off so as keep constant voltage of by feedback control. The drives light load mode when flyback developed terminates earlier than each clock pulse, heavy mode, which on-off cycle longer later pulse.