PFC and ballast control IC is ‘industry’s first’
1 min read
International Rectifier has introduced what it claims to be the industry's first IC to integrate power factor correction (PFC) and ballast control in a single 8pin SO-8 package.
The IRS2580DS Combo8 device is optimised to reduce overall component count and speed up design in energy efficient lighting applications. IR says it offers 'excellent PFC performance', 'a high degree of accuracy' and 'ultra low THD'. The IC also features a boost converter control circuit and a 600V half bridge control circuit for driving the resonant mode lamp output circuit.
Complete fault protection circuitry is included for protection against conditions such as mains interrupt or brown out, lamp non strike, lamp filament failure and end of life. The IRS2580DS requires only two primary control pins to perform all of the necessary ballast functions. These functions include an analogue voltage to frequency input pin for programming the different operating frequencies for preheating, igniting and running the lamp, as well as a PWM output pin for controlling the on and off times during each switching cycle of the PFC boost converter.
