Texas Instruments introduced a single-stage lighting pulse width modulation controller. The TRIAC-dimmable TPS2210 regulates LED current and achieves near unity power factor. The controller is designed for general lighting applications, such as commercial and residential recessed, light bulb replacement, architectural and display lighting. It features flexible operation modes such as peak primary current, constant on-time and frequency modulation. The constant on-time mode provides single-stage power factor correction for improved efficiency. Its MOSFET configuration results in 10% lower switching losses with fast and easy high-voltage start-up, claims the company. Continuous linear TRIAC dimming provides flicker-free, uniform control. Multiple protection features, such as over-voltage protection without opto-couplers, thermal shutdown and advanced over-current, safely shut down of the system if fault conditions exist.
