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Simulated wall dimmer for CFL/LED lamps based on TS820 (US version 110 V)

STEVAL-ILD003V2

Overview

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 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.

Main 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 SCRs12:
- 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
RoHS compliant
Compliance with EMC standards
- IEC 61000-4-4: criteria A for more than 4 kV

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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