The IR2167 is a fully integrated, fully protected 600 V ballast control IC designed to drive virtually all types of rapid start fluorescent lamp ballasts.
This International Rectifier product features PFC circuitry, low THD and DC Bus regulation. Externally programmable features such as preheat time and frequency provide a high degree of flexibility for the ballast design engineer. Comprehensive protection features such as protection from failure of a lamp to strike, filament failures, low AC line conditions, thermal overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design.
The heart of the control IC is a variable frequency oscillator with externally programmable deadtime. Precise control of a 50% duty cycle is accomplished using a T-flip-flop. The IR2167 is available in both 20-pin DIP and 20 pin wide body SOIC packages.
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