ST ILD003V1 User Manual

Analog wall dimmer for CFL/LED lamps based on the TS820

Features

■

Line voltage: 198 - 264 V 50/60 Hz

■

Maximum operating ambient temperature:
60 °C

■

Incandescent 230 V lamp power:
– Minimum power: 20 W
– Maximum power: 350 W (without heatsinks

mounted on SCRs

■

Dimmable lamps that can be used:
– CFL lamp (typically 14 W)
– LED lamp (typically 6 W)

■

RoHS compliant

(a)

)

STEVAL-ILD003V1

(EU version 220 V)

Data brief − production data

Description

The purpose of the STEVAL-ILD003V1
demonstration board is to evaluate ST’s SCR
dimming solution for low-consumption lamps,
particularly CFL and LED lamps, eliminating
flicker, and to be able to directly test most
dimmable loads currently on the market.

Through-hole technology is used for the most
important components such as the LC filter, gate
resistor, turn-on delay capacitor, etc., in order to
allow board modification, if needed.

AC light dimmers based on SCR dimming
technology eliminate flickering as a continuous
current is applied through the gate. An SCR
dimmer could easily replace a standard low-cost
analog Triac light dimmer by using a Diac­controlled circuit.

a. Higher power could be reached with a different filter

inductor and SCR heatsink.

March 2012 Doc ID 022409 Rev 2 1/4

This is information on a product in full production. For further information contact your local STMicroelectronics sales
office.

www.st.com

4

Circuit schematic STEVAL-ILD003V1

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1 Circuit schematic

Figure 1. STEVAL-ILD003V1 schematic

2/4 Doc ID 022409 Rev 2