Texas Instruments' TPS92561 device is a boost controller for LED lighting applications utilizing high-voltage, low-current LEDs. A boost converter approach to lighting applications allows the creation of the smallest volume converter possible and enables high efficiencies beyond 90%. The device incorporates a current sense comparator with a fixed offset enabling a simple hysteretic control scheme free of the loop compensation issues typically associated with a boost converter.
The TPS92561EVM-001 implements a phase-dimmable off-line PFC Boost LED driver using the TPS92561 integrated circuit from Texas Instruments. The TPS92561 is based on a hysteretic current control scheme that provides the benefits of high power factor, low THD and fast transient response, without requiring complex loop compensation. The EVM can support applications up to ~12 W.
Design Calculator - Texas Instruments' TPS92561 Design Calculator is an Excel based design tool to aid in determining external component values for the TPS92561 phase-dimmable, single-stage boost controller for LED lighting.