Method and system for driving a capacitively coupled fluorescent lamp
A capacitively coupled fluorescent lamp package having a capacitively coupled fluorescent lamp; an inverter circuit for driving the lamp; and supply nodes for receiving a supply voltage is disclosed. The capacitively coupled fluorescent lamp package includes a resonant circuit lamp driving scheme for driving the capacitively coupled fluorescent lamp. The driving scheme reduces parasitic capacitance leakage current; compensates the reactive power using the secondary side leakage inductance in order to have the resonant frequency approximately equal the inverter circuit operating frequency for current source-type driven circuits; and forms a series resonant sub-circuit with the embedded ballasting capacitor and the secondary side leakage inductance for voltage source-type driven circuits, such that the resonant frequency is substantially less than the inverter circuit operating frequency and that the lamp current is properly shaped along with current ballasting.
Koninklijke Philips Electronics N.V.
H H H Y Y H H
H01J H01J H01J Y10S Y02B H05B H01J
additional additional additional additional additional inventional additional
Gert Chin
Bruning Chang