TPS92075EVM

Оценочный модуль для понижающего драйвера светодиода TPS92075 с цифровым управлением.

The TPS92075EVM evaluation module implements a dimming solution using TPS92075 integrated circuit. The TPS92075 is a hybrid power factor controller with a built in phase dimming decoder. Line cycles are analyzed continuously by an internal low power digital controller for shape and symmetry. An analog current reference is then generated and used by the power converter stage to regulate the output current. The analog reference is manipulated using control algorithms developed to optimize dimmer compatibility, power factor and THD. Using constant off time control, the solution achieves a low part count, high efficiency and inherently provides variation in the switching frequency. This variation creates an emulated spread spectrum effect easing the converters EMI signature and allowing a smaller input filter. The EVM can support applications up to 17W and includes output LED load ranges from 550mA at 12V to 400mA at 46V.