This essayis aboutthe application of adiode-capacitornetworkon conventional non-isolated DC-DC converter. The study will focusonobtaining high step-up voltage gain, low switch voltage stress, simple control, and high conversion efficiency. Three single-switch step-up converters with high step-up ratio based on the diode-capacitornetwork are proposed. The principle of operation and theoretical analysis of every single-switch step-up converter isevaluated for both continuous and discontinuous conduction modes. Giventhe mirror-symmetrical characteristic of the diode-capacitor network, cascade single-switch step-up convertersbased on the single-switch positive-output step-up converter are achieved when several diode-capacitor networks are arranged inseries. Simulation analysis and experimental results obtained from the implemented prototypes operating at 40kHz are provided to verifythe performances of the proposed step-up converters.
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