MOS gate driver for ballast circuits

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Impedance or current regulator in the supply circuit

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315DIG4, 315DIG5, 315DIG7, 315308, H05B 3702

Patent

active

055459552

ABSTRACT:
A monolithic MOS gate driver chip is described for driving high side and low side power MOSFETs in a gas discharge lamp ballast circuit. The chip includes a timer circuit for generating a square output at the natural frequency of resonance of the lamp ballast. Dead time circuits are provided in the chip to prevent the simultaneous conduction of both high side and low side MOSFETs. The chip may be housed in a right pin DIP package.

REFERENCES:
patent: 4641061 (1987-02-01), Munson
patent: 4933605 (1990-06-01), Quazi et al.
"GH voltage versatility", Electronics World & Wireless World Oct. 1994, pp. 837-839.
Wood "Electronic Ballasts Using the Cost-Saving IR2155 Driver" International Rectifier Application Notes made available to public on or before Feb. '94, AN-995 pp. 2-4.
Chryssis "High-Frequency Switching Power Supplies Theory & Design" 2nd ed. pp. 30, 53 and 183-208 1989.

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