Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1996-09-13
1999-12-14
Shingleton, Michael B
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315DIG7, 315DIG4, 315DIG224, H05B 3702
Patent
active
060022132
ABSTRACT:
A MOS gate drive (MGD) integrated circuit drives a pair of MOS gated power semiconductor devices such as are used in a half bridge circuit to drive a load in a resonant power supply circuit or to drive a gas discharge lamp in a ballast circuit. The gate drive circuit includes dead time circuitry which prevents simultaneous conduction in both MOS gated devices. The duration of the dead time is controlled in response to a feedback signal that is sensed from the output supplied to the load or the lamp. A dimming function is attained by controlling the voltage of the feedback signal.
REFERENCES:
patent: 4827391 (1989-05-01), Sills
patent: 4937505 (1990-06-01), Deglon et al.
patent: 5083065 (1992-01-01), Sakata et al.
patent: 5303140 (1994-04-01), Shimizu
patent: 5349273 (1994-09-01), Pacholok
patent: 5545955 (1996-08-01), Wood
patent: 5550436 (1996-08-01), Houk
patent: 5612594 (1997-03-01), Maheshwari
IBM Technical Disclosure Bulletin, vol. 24, No. 7B, Dec. 1981, pp. 3887 and 3888--Overlap Prevention for Switching Regulators.
International Rectifier Corporation
Shingleton Michael B
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