Renesas new built-in dimming function and a 40% reduction in package area of LED drive control IC

Recently, Renesas electronics for LED lighting launched a new LED drive control IC "R2A20135SP", the product integrated detection of three terminal bidirectional thyristor (TRIAC phase) dimmer conduction angle information, and feedback to the output voltage of the conduction angle detecting circuit. And the packaging area by 40%.

Renesas electronics said, compared with the need for the preparation of external conduction angle detection circuit Renesas original product'R2A20134 ', the new product can be printed on the substrate packaging area of about 40%". The new product is a LED driver control using a buck DC-DC converter IC. The switch element is not integrated, so it is required to be equipped with an external device. LED supply current error is only 6%, while the company's original product is 15%. By reducing the feedback control voltage of the DC-DC converter from +0.6V to +0.2V, the current error is reduced by about 60%. In addition, there are power factor correction (PFC) function, over current limiting function and zero current detection function. The maximum supply voltage is +24V, using 8 terminal SOP package, the temperature range of the working joint is -40 ~ +150.

In addition, Renesas is also equipped with the listing of IC LED control circuit board R2A20135EVB-ND1". The board area is 33.5mm * 3.6mm, support the "E26" type LED bulb, the AC input voltage is 90 ~ 132V, the output voltage is +40V, output current is 200mA, dimming range (trailing dimming rate) is 4 ~ 100%, the conversion efficiency is about 85% and the power factor is about 0.9, the total harmonic distortion (THD) is about 20%.

The IC will be available from the beginning of March 2012 samples, sample price of 40 yen per. Production is scheduled to start in June 2012, plans to increase the scale of production after December 2012 to 5 million monthly production.