STEVAL-ILL056V1

STEVAL-ILL056V1 3 A buck LED driver board based on the LED5000 Data brief Description Features • • • • • • • • • • • • • 5.5 V to 48 V operating input voltage range 850 kHz fixed switching frequency 200 mV typ. current sense voltage drop Buck / buck-boost / floating boost topologies PWM dimming ±3% output current accuracy over temperature 200 mOhm typical RDS(on) Peak current mode architecture Short-circuit protection Compliant with ceramic output capacitors Inhibit for zero current consumption Thermal shutdown RoHS compliant November 2013 The STEVAL-ILL056V1 is a product evaluation board based on the LED5000, an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as a precise constant current source with an adjustable current capability up to 3 A DC.The embedded PWM dimming circuitry features LED brightness control. The regulated output current level is set by connecting a sensing resistor to the feedback pin. The 200 mV typical RSENSE voltage drop enhances performance in terms of efficiency.The size of the overall application is minimized thanks to the high switching frequency and its compatibility with ceramic output capacitors. The device is fully protected against overheating, overcurrent and output short-circuit. DocID025539 Rev 1 For further information contact your local STMicroelectronics sales office 1/4 www.st.com DocID025539 Rev 1 GND IN H V IN D IM TP3 TP8 TP2 TP1 C1 10u F 50V C2 10u F 50V C3 100nF 50V NM R2 p o w e r p la n e s m a ll s ig n a l JP 2 NM R1 JP 1 6 EP IN H G N D EP V IN D IM BO O T U1 D2 BZ X 84 3 7 2 1 C6 C4 220p F R3 22K 4 CO MP FB SW ST1C C 14 C5 15p F 5 8 100nF 0603 / 0805 1 S T P S 3L60U D1 2/4 R4 L1A R56 RS 2k 33u H M SS7341 L1 C A SE 1206 C7 1u F 50V B Z X 3 8 4 -C 3 9 D3 TP6 1 2 0 6 +1 2 1 0 fo o tp r in t TP5 GND VLE D + C8 1 u F 1 2 0 6 +1 2 1 0 fo o tp r in t 50V VLE D - TP4 1 2 L 1 A = C O IL C R A F T M S S 7 3 4 1 L 1 = C O IL C R A F T X A L 6 0 6 0 O X A L 5 0 5 0 Schematic diagram STEVAL-ILL056V1 Schematic diagram Figure 1: STEVAL-ILL056V1 circuit schematic 0603 / 0805 STEVAL-ILL056V1 2 Revision history Revision history Table 1: Document revision history Date Revision Changes 15-Nov-2013 1 Initial release DocID025539 Rev 1 3/4 STEVAL-ILL056V1 Please Read Carefully Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B) AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT PURCHASER’S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR "AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL" INDUSTRY DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2013 STMicroelectronics - All rights reserved STMicroelectronics group of companies 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 www.st.com 4/4 DocID025539 Rev 1