STEVAL-ILB009V1 2 x 28 W electronic ballast with active PFC based on the STD3N62K3 and STD845DN40 BJT devices Data brief production data Features Input voltage range: 180 Vac to 264 Vac Nominal output voltage: 400 V Nominal output power: 60 W Target efficiency: ~ 90 % Minimum switching frequency: 35 kHz Expected power factor (PF): 0.99 RoHS compliant Description The STEVAL-ILB009V1 demonstration board is able to drive a 2 x 28 W electronic lamp ballast with active PFC. The ballast is formed by a PFC section and a self-oscillating half bridge converter. The circuit has been designed for a nominal input voltage of 230 Vrms 15% and 50-60 Hz. The key components are the power bipolar transistor (STD845DN40), MOSFET device (STD3N62K3) and ST power switching driver for the PFC section. The purpose of the STEVAL-ILB009V1 is to show a simple and cheap lighting application optimized in terms of power factor (PFC), THD harmonic distortion, and electrical efficiency. March 2012 Doc ID 022895 Rev 1 1/4 This is information on a product in full production. For further information contact your local STMicroelectronics sales www.st.com 4 office. Obsolete Product(s) - Obsolete Product(s) : : : : RURU QGXQGX FWFW : : / / 5757 RURU QGXQGX FWFW 2 2 4 4 RURU QGXQGX FWFW RURU QGXQGX FWFW / / 0 0 : : 0 0 0 0 5757 2 2 0 0 / / 677+677+ : : Circuit schematic STEVAL-ILB009V1 1 Circuit schematic Figure 1. STEVAL-ILB009V1 circuit schematic ) Q Q) Q Q)) U U QQ QHRQHR QQQHRQHR QQ)) Q) Q) ) Q) Q Q)) Q ,, 4 4 4 4 ,, ,, / / )) S S 4 4 4 4 : : QQ Q Q : : , &, & 5 5 5 5 : : 5 5 ,, / / .. / / QQ .. V9EX V9EX ) X X) && : : : : : : N N N N U && 1717 : : 55 QR NN :: 16 . 7 .1 67 (( , , 55 : : :: :: NN QQ : : N N / / )) QR *1 708/ Q Q (( , , * 0 3 )) X X 9&& 9 ,1 NN :: )) Q Q :: NN :: : : :: .. Q) Q) RQ HWOSSDQUFHOFWHUQDH )) Q Q QSX,QSXW,W 0 Y 2/4 Doc ID 022895 Rev 1 Obsolete Product(s) - Obsolete Product(s) & & 7 7 & & 5 5 5 5 5 5 & & 0H 5 5 & & 5 5 8 8 5 5 5 5 & & 0H 5 5 5 5 & & 5 5 5 5 & & 5 5 5 5 7 7 & & & & & & )L)L &D &DFLFLWDWD 5 5 & & & & 5 5 % % 5 5 8 8 & & & & & & & & 5 5 & & 5 5 & & 5 5 5 5 5 5 5 5 0H &2 &6 =&