STEVAL-ILD003V2

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 on SCRs(a) (b): – 3 to 350 W for 110/120 V rms line ■ Maximum operating ambient temperature:60 °C ■ Power efficiency @ 350 W / 120 V > 98.5% ■ Standby losses @ 120 V < 0.3 W (could be reduced to 0 if potentiometer features a mechanical switch to open the circuit at minimum setting) ■ RoHS compliant resistor, turn-on delay capacitor, etc., in order to allow board modification, if needed. The STEVAL-ILD003V2 eliminates flickering thanks to its continuous current applied through the sensitive SCR gate. This dimmer could easily replace a standard low-cost analog Triac light dimmer using a Diac-controlled circuit. 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 For further information contact your local STMicroelectronics sales office. 1/4 www.st.com 4 2/4 CON2 J1 2 1 F1 FUSE C5 100n Doc ID 022481 Rev 3 1 Vac2 TP 10k R5 X1 TS820-600 TP Gx1 1 TS820-600 X2 R8 10k TP Gx2 1 50k R6 R9 50k 20k 2N2222 Q1 R11 C7 10n C8 10n 20k R12 2N2222 Q3 R7 10k D2 15V 10k R4 Q2 2N2907 2N2907 Q4 15V D4 1 1 1u C1 0 RP 470k R30 1k 1u C3 TP Vc1 TP Vc3 D3 1N4148 1N4148 D5 R31 62k Figure 1. Vac1 TP 1 1 29 uH L1 Circuit schematic STEVAL-ILD003V2 Circuit schematic STEVAL-ILD003V2 schematic AM09968v1 STEVAL-ILD003V2 2 Revision history Revision history Table 1. Document revision history Date Revision Changes 11-Nov-2011 1 Initial release. 26-Mar-2012 2 Changed board image on cover page 15-Feb-2013 3 Updated features on cover page Doc ID 022481 Rev 3 3/4 STEVAL-ILD003V2 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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