The device incorporates a 600V high-voltage start-up cell that is claimed to deliver a ‘time-to-light’ of less than 0.5s. The key application of the IRS2982S is the isolated flyback with CV (constant voltage) mode which is said to open design flexibility in other topologies, such as non-isolated flyback with CC/CV, buck, boost, and SEPIC (single ended primary inductor converter).
Designed to keep power consumption to a minimum, the IRS2982S features a burst mode capability that ensures ultra-low standby power. The device operates from an input voltage range of 85 to 305Vac and incorporates over-voltage and over-current protection. An optimised single-stage PFC/flyback design ensures a power factor of higher than 0.9 and a THD of below 20%.
A 50W flyback evaluation board is available for designers looking to evaluate and test the IC in their LED applications.
