TI developed a reference board for LED bulbs

Instruments (Texas, TI) and the German lighting manufacturers Lemnis Lighting B.V. jointly developed the LED bulb with a reference board (Reference Board). The utility model is mainly aimed at the domestic LED bulb installed in the existing bulb socket. TI said that the use of the reference board, in addition to miniaturization can be achieved in order to replace the bulb, but also to reduce the overall cost of the system". The new product is provided by TI LED driver control IC, Lemnis Lighting provides three terminal triac (TRIAC) dimming technology production. Reference card is scheduled to begin sales in the second quarter of 2010. Price of $49.95. In addition to the board, it will also provide information on the circuit diagram, component list and evaluation results.

The LED driver provided by TI IC is a newly developed product. Product type "TPS92010". PWM (pulse width modulation) control of IC (AC-DC) can be used to form an analog resonant flyback converter (Flyback) circuit by supporting an insulated power supply. Need to be equipped with external transformers, switching components, input part of the diode bridge (Diode Bridge), the input and output capacitors and output voltage feedback optocoupler, etc.. The feedback circuit is controlled by current mode. The maximum switching frequency is 143kHz.

Because the new product adopts the analog resonance circuit, it can reduce the switching loss and the radiation electromagnetic noise (EMI). It is equipped with the protection function of over voltage and over voltage, over heat protection and over current protection. Operating temperature range of -40 ~ +105 C. 8 terminal SOP package. 1000 bulk purchase price of $0.43.