STEVAL-ILL004V1 STMicroelectronics, STEVAL-ILL004V1 Datasheet - Page 17

• Manufacturer Part Number: STEVAL-ILL004V1
• Description: EVAL BOARD PHASE CONTROL DIMMER
• Manufacturer: STMicroelectronics
• Type: Power Management: Lighting and Ballast Controllerr

Specifications of STEVAL-ILL004V1

• Design Resources: STEVAL-ILL004V1 Gerber Files STEVAL-ILL004V1 Bill of Material STEVAL-ILL004V1 Schematic
• Contents: Fully Assembled Evaluation Board
• Product: Display Modules
• For Use With/related Products: ST7FLITE09
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-5081

AN2263
3.2
Figure 12. Lamp-in-serial TRIAC switch ON maximum time
Phase and neutral lines available
In
supply is able to provide enough energy for the microcontroller because the phase and
neutral are available, which provides the TRIAC with an unlimited amount of time to be
open. Since there is very little difference between the light intensity of a switch designed
with 95% TRIAC opening time and that of 100%, designing the switch to 95% (if needed) is
sufficient.
Due to the versatility of the evaluation board (e.g., motor speed control, lamp-on-board or
lamp-in-series), the switch is designed to limit the TRIAC opening time to 80%. This
guarantees functionality for a lamp-in-series with the evaluation board. However, if both
phase and neutral lines are available for the application, this limit may be changed.
Figure 13. Light dimmer-available phase and neutral lines
Figure
13, the lamp is directly connected to the evaluation board. The capacitive power
MAINS
230V
Filter
TRIAC
LAMP
R
Supply
Light dimmer design and load configurations
Microcontroller
ST7FLITE09
(push-button or
potentiometer)
Control
AI12201
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