Texas InstrumentsTPS92010EVM-592

This EVM uses the TPS92010 high efficiency offline LED lighting driver controller. The power topology is a quasi resonant mode flyback. This makes for a cost competitive solution. This TPS92010 EVM implements a constant current, high efficiency, low ripple AC-DC LED lighting driver. The high efficiency is maintained even during deep dimming. Current sensing is done directly via a resistor and op-amp. This in turn drives an opto-coupler which sets the PWM pulses via the TPS92010 to control the output current at a constant level. The design also incorporates a circuit to ensure compatibility with a large number of commonly available TRIAC based dimmers. This circuit monitors the line voltage for TRIAC operation. When the TRIAC is operating the line voltage is chopped.

-TRIAC compatible dimming
-Low cost line powered LED driver solution
-Includes 5 HB-LED’s as a sample load
-Allows easy use of user own LED load
-Test points for LED voltage and current
-Accurate current sensing to maintain constant current to LED’s
-Modifiable output current from 0.2A to 0.7A, 0.325A is default

Technical Document
http://www.ti.com/lit/ds/slusa14/slusa14.pdf