●Introduction
●The UCC28810EVM-002 is a constant current non-isolated power supply for LED lighting applications. It will convert universal mains (90 VRMS to 264 VRMS) to a 0.9-A constant current into a 100-W load. This evaluation module will allow the customer evaluate the UCC28810/11 in a typical LED lighting application.
●Description
●The evaluation module uses a two stage approach to controlling the output current.
●The first stage is a transition mode PFC circuit. This ensures the design meets the harmonic current or power factor requirements set out by various standards, such as EN61000-3-2. The PFC circuit converts the AC input to a regulated DC voltage. This DC voltage can be configured in one of two ways. The default configuration of the module is that of a boost follower type PFC. The boost follower PFC is where the PFC regulated output DC voltage tracks the AC input peak voltage. The second configuration requires removing some components and changing a resistor value see below for more details. This second onfiguration removes the tracking element of the PFC circuit. The PFC DC output voltage will then be egulated to a fixed value in the region of 396 VDC.
●Features
●• 90 VRMS to 264 VRMS operation
●• Boost Follower or Fixed Output PFC Stage
●• PFC Disable
●• Output Current Disable
●• External or Internal PWM Dimming
●Typical Applications
●• AC Input General Lighting Applications Using HB-LED’s
●• Industrial, Commercial and Residential Lighting Fixtures
●• Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures
