STEVAL-ILL041V1 STMICROELECTRONICS [STMicroelectronics], STEVAL-ILL041V1 Datasheet

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STEVAL-ILL041V1

Manufacturer Part Number
STEVAL-ILL041V1
Description
A 93% efficient LED driver solution for the US market
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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STEVAL-ILL041V1
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Features
Description
The STEVAL-ILL041V1 demonstration board
implements an LED driver that meets the present
requirements for the US market.
The STEVAL-ILL041V1 utilizes ST’s L6564 power
factor controller in an unconventional circuit to
regulate the input power to a step-down switching
regulator. The circuit also compensates for
variations in LED voltage drop, to maintain the
average output current in a tight band over a wide
range of line voltage and LED characteristics.
While the input current waveform is not perfectly
sinusoidal, power factor and harmonic content are
well within the requirements for the US
commercial market.
The form factor was designed to fit into the PAR38
envelope and the driver and LEDs can be used to
replace 65 W incandescent flood lamps.
October 2011
For further information contact your local STMicroelectronics sales office.
Output current 350 mA +/-3% over 90 V-138 V
line range
Load: 18 (connected in series) 1 W LEDs
Efficiency > 93%
Power factor > 0.97
RoHS compliant
A 93% efficient LED driver solution for the US market
Doc ID 018900 Rev 1
STEVAL-ILL041V1
STEVAL-ILL041V1
www.st.com
Data brief
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STEVAL-ILL041V1 Summary of contents

Page 1

... Description The STEVAL-ILL041V1 demonstration board implements an LED driver that meets the present requirements for the US market. The STEVAL-ILL041V1 utilizes ST’s L6564 power factor controller in an unconventional circuit to regulate the input power to a step-down switching regulator. The circuit also compensates for variations in LED voltage drop, to maintain the average output current in a tight band over a wide range of line voltage and LED characteristics ...

Page 2

... Circuit schematic 1 Circuit schematic Figure 1. Circuit schematic 2/4 Doc ID 018900 Rev 1 STEVAL-ILL041V1 ...

Page 3

... STEVAL-ILL041V1 2 Revision history Table 1. Document revision history Date 31-Oct-2011 Revision 1 Initial release. Doc ID 018900 Rev 1 Revision history Changes 3/4 ...

Page 4

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 4/4 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 018900 Rev 1 STEVAL-ILL041V1 ...

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