Abstract: Disclosed in the present application is a driver for lighting means, preferably light emitting diodes, comprising a charge pump circuit, which is improved based on a common first-stage charge pump circuit. A fifth capacitor is added to connect a power source input end of the charge pump circuit to an LLC or LC circuit, a compensation current is provided for the power source input end using a resonant current generated by a resonant inductance in the LLC or LC circuit, an input angle of a power input current is widened and the input current is smoothed, so as to improve the problems, that a total harmonic distortion is larger and the harmonic does not satisfy the IEC standard, of a single-stage charge pump circuit where the output range is larger.

Abstract: Disclosed in the present application is a driver for lighting means, preferably light emitting diodes, comprising a charge pump circuit, which is improved based on a common first-stage charge pump circuit. A fifth capacitor is added to connect a power source input end of the charge pump circuit to an LLC or LC circuit, a compensation current is provided for the power source input end using a resonant current generated by a resonant inductance in the LLC or LC circuit, an input angle of a power input current is widened and the input current is smoothed, so as to improve the problems, that a total harmonic distortion is larger and the harmonic does not satisfy the IEC standard, of a single-stage charge pump circuit where the output range is larger.