International Rectifier have introduced the IRS2530D DIM8 and IRS2158D 600V control ICs for energy-efficient dimming fluorescent lighting ballast applications.
The IRS2530D DIM8 is a linear dimming ballast control IC with half-bridge driver in a compact 8-pin form factor.
The new device provides an alternative to incandescent bulbs in multi-level and three-way compact fluorescent lighting (CFL) applications.
The IRS2530D DIM8 ballast control IC requires only small external components, simplifies and shrinks circuit design and delivers a dimming system performance of up to 10% for compact fluorescent lamps and linear ballasts.
The IRS2158D 16-pin fluorescent dimming ballast control IC with half-bridge driver is designed for applications requiring dimming performance below 10%.
Protection features such as protection from failure of a lamp to strike, filament failures and end-of-life protection are offered, making the device suitable for thin lamps including the T5 lamp.
IRS2530D DIM8 ballast control IC technical data: The IRS2530D DIM8 ballast control IC features IR’s patented ballast and high-voltage technologies. A single high-voltage pin senses the half-bridge current and voltage to perform necessary ballast protection functions. The DC dim input voltage reference and AC lamp current feedback are combined, allowing a single pin to be used for dimming. These high-voltage control algorithms coupled with a dimming method in a single 8-pin IC result in a reduced component count, increased reliability and reduced design cycle time, while maintaining high dimming ballast system performance. The IRS2530D DIM8 ballast control IC also features an internal non-ZVS protection and internal crest factor protection to prevent lamp failure damaging the ballast.
IRS2158D ballast control IC technical data: The IRS2158D is a fully integrated, fully protected 600V ballast control IC designed to drive a variety of fluorescent lamps. The device’s features include programmable half-bridge over-current protection, programmable pre-heat and run frequencies, programmable preheat time and deadtime, closed-loop half-bridge ignition current regulation, programmable end-of-life protection, brownout protection and low input offset operational amplifier for dimming, current or power control. In addition, the new device features end-of-life window comparator pin and internal 60-event current sense up/down fault counter to accommodate T5 lamp and multi-lamp ballasts.