A High-Efficiency RF Suppression Circuit for Fluorescent Lamp Inverters Using Charge Pump and Partial Smoothing Capacitors

摘要

A highly efficient RF suppression circuit for a fluorescent lamp inverters is proposed based on charge pump and partial smoothing capacitors. The circuit consists of a pumping capacitors, a partial smoothing capacitor and a control switch. The pumping capacitor is of comparatively small capacitance and the control switch operates to ensure that the pumping capacitor charging current is proportional to the AC power supply voltage even across the interval when the AC voltage is near zero.