STEVAL-ILL001V1: 350mA @ 28V Max, 115V and 230V in

Summary

The STEVAL-ILL001V1 evaluation board introduces an innovative solution for driving high brightness 1 W LEDs (light emitting diodes), using the VIPer22A-E in a flyback configuration with output current control.

The power supply is capable of driving a 1 to 8 LED array in the European voltage range of 185-265 VAC without modifications. The same VIPer device can also function within the specifications in the U.S. input voltage range by using an input voltage doubler.

An innovative control technique is used to adjust the duty cycle of the output current, in order to dim the luminosity of the LEDs down to 10% of the maximum value (STMicroelectronics patent pending). The proposed driver is suitable for applications such as landscape lighting, street lighting, car parks, bollards, garden lighting, large area displays, etc. Domestic applications such as room lighting, decorative fixtures and architectural lighting can also benefit from a dimmable light source.

Specifications

Manufacturer	STMicroelectronics
Category	Lighting
Sub-Category	LED Drivers - AC / Offline
Eval Board Part Number	497-5071-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Board not Stocked
AC Voltage	115 V 230 V Universal
Outputs and Type	1 Isolated
Current Out	350 mA
Voltage Out (Max)	28 V
Efficiency @ Conditions	>75%, 230V in, 8 LEDs @ 350 mA
Features	Dimming Control Light Load Mode Open Circuit Protection Short Circuit Protection Thermal Protection Under Voltage Protection, Brown-Out Zero Load Regulation
Switching Frequency	60 kHz
Component Count + Extras	62 + 6
Design Author	STMicroelectronics
Application / Target Market	Garden Light Lighting: LED Home Lighting Lighting: LED Signage
Voltage In	85 ~ 135 or 185 ~ 265 VAC
Power Factor
Standard(s)
Main I.C. Base Part	VIPer22A
Date Created By Author
Date Added To Library	2011-03