with Digital Reference Control

The TPS92075 is a hybrid power factor controller • Controlled Reference Derived PFC (PFC) with a built-in phase dimming decoder. The • Integrated Digital Phase-Angle Decoder device analyzes line cycles continuously using an • Digital 50/60 Hz Synchronization internal, low-power, digital controller for shape and symmetry. The power converter stage generates an • Phase-Symmetry Balancing analog current reference and uses it to regulate the • Constant LED current operation output current. The device uses control algorithms to • Fast Start-up manipulate the analog reference. These algorithms optimize dimmer compatibility, power factor and total • Dimming Implemented Via Analog Reference harmonic distortion (THD).Control • Smooth Dimming Transitions Using a constant off-time control, the solution achieves low component count, high efficiency and • Overvoltage Protection inherently provides variation in the switching • Feedback Short-Circuit Protection frequency. This variation creates an emulated spread • Leading and Trailing Edge Dimmer spectrum effect easing the converters EMI signature Compatibility and allowing a smaller input filter. • Low BOM Cost and Small PCB Footprint The TPS92075 also includes standard features: current limit, overvoltage protection, thermal shut- • Patent Pending Digital Architecture down, and VCC undervoltage lockout, all in package