STEVAL-ILD003V2 STMicroelectronics

STEVAL-ILD003V2 Analog wall dimmer for CFL/LED lamps based on the TS820 (USA version 110 V) Data brief Features Operation for 2-wire wall dimmer Leading-edge control (compatible with all lamps commonly found on the market) Operation on 120 V line rms voltage (98 to 132 V) and 50 Hz or 60 Hz line frequency Dimmable power range with halogen, CFL and LED lamps (with 27 C/W heatsinks mounted (a) (b) on SCRs : 3 to 350 W for 110/120 V rms line Maximum operating ambient resistor, turn-on delay capacitor, etc., in order to temperature:60 C allow board modification, if needed. Power efficiency 350 W / 120 V > 98.5% The STEVAL-ILD003V2 eliminates flickering Standby losses 120 V < 0.3 W (could be thanks to its continuous current applied through reduced to 0 if potentiometer features a the sensitive SCR gate. This dimmer could easily mechanical switch to open the circuit at replace a standard low-cost analog Triac light minimum setting) dimmer using a Diac-controlled circuit. RoHS compliant Compliance with EMC standards IEC 61000-4-4: criteria A for more than 4 kV Description The STEVAL-ILD003V2 demonstration board is designed to propose a low-cost analog dimmer topology using a sensitive SCR TS820-600FP. The dimmer can drive typical low-consumption lamps, particularly CFL and LED dimmable lamps. Through-hole technology is used for the most important components such as LC filter, gate a. Higher power can be reached with a different filter inductor and a bigger SCR heatsink b. 200 W is the maximum allowed power without an SCR heatsink February 2013 Doc ID 022481 Rev 3 1/4 For further information contact your local STMicroelectronics sales office. www.st.com 4Circuit schematic STEVAL-ILD003V2 1 Circuit schematic Figure 1. STEVAL-ILD003V2 schematic AM09968v1 2/4 Doc ID 022481 Rev 3 L1L1 29 uH 1N41481N4148 1 15V15V D5D5 C3 10k10k D4D4 2N22222N2222 1u VVac1ac1 R8R8 Q3Q3 50k50k 10k10k TPTP F1F1 FUSEFUSE R9R9 R7R7 R12R12 1 TS820-600TS820-600 1 TPTP Vc3Vc3 X2X2 20k20k Q4Q4 TPTP Gx2Gx2 J1J1 10n10n 2N29072N2907 2 C8C8 RPRP R31R31 1 470k470k 62k62k C5C5 100n100n CON2CON2 C7C7 R30R30 10n10n 1k1k Q2Q2 R1R111 X1X1 2N29072N2907 1 TPTP TS820-600TS820-600 Vc1Vc1 20k20k R6R6 R4R4 VVac2ac2 TPTP 50k50k 10k10k R5R5 2N22222N2222 1 C1 Q1Q1 1 10k10k D2D2 TPTP 15V15V D3D3 1u Gx1Gx1 1N41481N4148 0