Power supply and electronic ballast with a novel boost converter

Details Power supply and electronic ballast with a novel boost converter Power supply and electronic ballast with a novel boost converter

1996-06-04

1998-03-17

Pascal, Robert

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315224, 315DIG5, H05B 3700

Patent

active

057290989

ABSTRACT:
An electronic power supply (10) includes a boost converter (100) and an inverter (600). The inverter (600) includes a first inverter node (602) having a periodically varying voltage, and a second inverter node (604) having a voltage with a peak value that is proportional to the dc output voltage of the boost converter (100). The boost converter (100) includes a control circuit (200) for driving a boost FET (110). Control circuit (200) includes a shunt circuit (300) having a shunt switch (308) for periodically turning off the boost FET (110), a drive source network (400) that is coupled to the first inverter node (602), and a load regulation network (500) that is coupled to the second inverter node (604). In a preferred embodiment, the power supply (10) includes a rectifier circuit (40) and a push-pull inverter (600), and is adapted to serve as an electronic ballast for powering at least one fluorescent lamp (702).

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patent: 5471118 (1995-11-01), Nilssen
patent: 5485059 (1996-01-01), Yamashita et al.

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