Kit Description Rev. 1.00 / March 2013 ZLED7015 ZLED7015KIT-E1 Evaluation Kit Description W i s e a n d E ffi c i e n t LED Lighting ICs ZLED7015 ZLED7015KIT-E1 Evaluation Kit Important Notice Restrictions in Use ZMDI’s ZLED7015KIT-E1 Evaluation Kit hardware is designed for ZLED7015 demonstration, evaluation, laboratory setup, and module development only. The ZLED7015KIT-E1 Evaluation Kit hardware must not be used for module production or production test setups. Disclaimer Zentrum Mikroelektronik Dresden AG (ZMD AG) shall not be liable for any damages arising out of defects resulting from (i) delivered hardware and software (ii) non-observance of instructions contained in this manual and in any other documentation provided to user, or (iii) misuse, abuse, use under abnormal conditions or alteration by anyone other than ZMD AG. To the extent permitted by law, ZMD AG hereby expressly disclaims and user expressly waives any and all warranties, whether express, implied or statutory, including, without limitation, implied warranties of merchantability and of fitness for a particular purpose, statutory warranty of non-infringement and any other warranty that may arise by reason of usage of trade, custom or course of dealing. Contents 1 2 3 4 5 6 Kit Contents ................................................................................................................................................... 4 Kit Description ............................................................................................................................................... 4 2.1. ZLED7015 Overview .............................................................................................................................. 4 2.2. ZLED7015KIT-E1 Evaluation Board Overview....................................................................................... 4 2.3. Connections ............................................................................................................................................ 5 2.4. Power Supply.......................................................................................................................................... 6 2.5. Circuit Operation ..................................................................................................................................... 6 2.6. Schematic Diagram ................................................................................................................................ 7 Ordering Information ..................................................................................................................................... 8 Related Documents ....................................................................................................................................... 8 Glossary ........................................................................................................................................................ 8 Document Revision History ........................................................................................................................... 9 Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 2 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit List of Figures Figure 2.1 Figure 2.2 ZLED7015KIT-E1 Evaluation Board (Top View) ............................................................................. 5 ZLED7015KIT-E1 Schematic Diagram ............................................................................................ 7 List of Tables Table 2.1 Connections for the Evaluation Board ............................................................................................. 5 For more information, contact ZMDI via [email protected]. Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 3 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit 1 Kit Contents The ZLED7015KIT-E1 Evaluation Kit includes the following: ZLED7015-E1 Evaluation Board v.X Five ZLED7015 samples, MSOP10 with thermal pad package ZLED7015KIT-E1 Evaluation Kit Start-up Information Kit Disclaimer The ZLED7015KIT-E1 Evaluation Kit is fully assembled and ready for immediate operation. 2 2.1. Kit Description ZLED7015 Overview The ZLED7015KIT-E1 Evaluation Kit provides a quick and easy method for evaluating the ZLED7015 within its basic application circuit. Reading the ZLED7015 Data Sheet before using the Evaluation Kit is recommended for understanding the operation of the ZLED7015 and the Evaluation Board. The ZLED7015 is a constant current boost converter with an internal FET switch. The step-up converter topology allows series connection of multiple white LEDs so that the LED currents are identical for uniform brightness. The nominal output current can be set by an external resistor with the option to also dim the brightness of the LEDs with a PWM signal or DC voltage. A low 0.3V feedback voltage minimizes power loss in the current setting resistor for better efficiency. The over-voltage protection (OVP) circuit safeguards the chip and the system even if the load is not connected. The ZLED7015 is available in an MSOP-10 package. The ZLED7015 IC is designed for LED current drive applications of up to 1.8A. The main features of ZLED7015 driver are 6VDC to 30VDC supply voltage High efficiency: up to 95% PWM or DC voltage dimming control Fast 1.0MHz switching frequency Internal high power 35V MOSFET switch Adjustable over-voltage protection (including open LED string detection) Over-temperature protection 2.2. ZLED7015KIT-E1 Evaluation Board Overview The Evaluation Board contains a standard 4-pin terminal connector to allow the user to easily connect and supply an LED’s board. The Evaluation Board also has two LED power pads (LED+ and LED-) to provide more flexibility in supplying a power LED or LED string. A 10µH shielded inductor sets the nominal frequency around 300kHz. The shielded inductor has been selected to minimize radiated EMI. The layout with any switching regulator is crucial to minimize radiated EMI. This reference design keeps the critical track lengths to a minimum. Ground has been maximized around critical areas. Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 4 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit The Evaluation Board offers the following features and benefits: Wide input voltage range (see section 2.4). Standard 2.54mm 4-pin header for attaching of LEDs and additional duplicate SMD pads (LED- , LED+). Standard 2.54mm 2-pin male header and alternative duplicate SMD pads for power supply. Standard 2.54mm 3-pin male header for dimming the LED brightness with an external PWM signal. All devices are SMD and on the same side of the board (as shown in the top view given in Figure 2.1). Maximized power ground copper on top and bottom sides with thermal vias for good heat distribution. Track connecting R2 (current sense resistor) to ZLED7015 is as short as possible (sense tracks). The C3 filter capacitor and COUT are connected as close as possible to the LED output pins. The flyback current path is as short as possible to ensure system precision and efficiency. Figure 2.1 ZLED7015KIT-E1 Evaluation Board (Top View) J3: Positive Pin for Power Supply and Alternative VDC+ Pad ZLED7015 Evaluation Board J1: Negative Pins 1 & 2 for LED String Connection and Alternative LED- Pad Caution: Ensure proper polarity. J3: Negative Pin for Power Supply and Alternative VDC- Pad Caution: Ensure proper polarity. 2.3. ZLED7015 Pin 1 J2 Connector for PWM Dimming Signal J1: Positive Pins 3 & 4 for LED String Connection and Alternative LED+ Pad Connections Refer to Figure 2.1 for an illustration of the following set up for the Evaluation Board. Table 2.1 Connections for the Evaluation Board Connector Description J1 Standard 2.54mm 4-pin female header with the following connections. Pins 1 and 2: Negative pole for voltage output to drive the LED string (also see LED- pad) Pins 3 and 4: Positive pole for voltage output to drive the LED string (also see LED+ pad) J2 Standard 2.54mm 3-pin male header for dimming the brightness of the LEDs with an external PWM signal or DC voltage. J3 Standard 2.54mm 2-pin male header for power supply. Input voltage range: 6VDC to 30VDC. See section 2.4 for additional requirements. Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 5 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit Connector Description VDC+ Positive pad for an optional alternative connection for the power supply (instead of J3). VDC- Negative pad for an optional alternative connection for the power supply (instead of J3). LED+ Positive pad for an optional alternative connection for the positive ZLED7015 driver supply voltage (instead of J1, pins 3 and 4). LED- Negative pad for an optional alternative connection for the negative ZLED7015 driver supply voltage (instead of J1, pins 1 and 2). 2.4. Power Supply The Evaluation Board requires a DC power supply of 6V for the LED string, but it also must be 3V higher than the normally working output voltage (the total forward voltage of the LED or the LED string). ! Caution: Ensure proper polarity when making connections. The system is not reverse polarity protected. See section 2.3 for connection options for the power supply. 2.5. Circuit Operation The reference current on the Evaluation Board has been set to 100mA but can be adjusted by changing the Rset set resistor according to the formula: ILED = VFB / RSET, [A] Where ILED = Average output current through the LED(s) in amperes VFB = Internal feedback reference voltage of the ZLED7015: approx. 0.3V RSET= Nominal current output setting resistor, which is approx.3Ω on the Evaluation Board For RSET = 3.0Ω ILED = 0.1A For detailed calculations about dimming control, PWM signal control, and setting the over-voltage protection level, refer to the ZLED7015 datasheet. Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 6 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit 2.6. Schematic Diagram Figure 2.2 ZLED7015KIT-E1 Schematic Diagram Evaluation Kit March 6, 2013 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 7 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit 3 Ordering Information Product Sales Code Description ZLED7015KIT-E1 ZLED7015KIT-E1 Evaluation Kit VX.x including 5 IC samples 4 Related Documents Note “Rev_X.x” refers to the latest version of the document. Document File Name ZLED7015 Datasheet ZLED7015_DataSheet_Rev_X.x.pdf Visit ZMDI’s website www.zmdi.com or contact your nearest sales office for the latest version of these documents. 5 Glossary Term Description LED Light Emitted Diode EMI Electromagnetic Interference MOSFET Metal–Oxide–Semiconductor Field Effect Transistor PCB Printed Circuit Board PWM Pulse Width Modulation MSOP10 Mini Small Outline Package Evaluation Kit © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. March 6, 2013 8 of 9 ZLED7015 ZLED7015KIT-E1 Evaluation Kit 6 Document Revision History Revision Date Description 1.00 March 6, 2013 First release. Sales and Further Information www.zmdi.com [email protected] Zentrum Mikroelektronik Dresden AG Global Headquarters Grenzstrasse 28 01109 Dresden, Germany ZMD America, Inc. 1525 McCarthy Blvd., #212 Milpitas, CA 95035-7453 USA Central Office: Phone +49.351.8822.0 Fax +49.351.8822.600 USA Phone +855.275.9634 Phone +408.883.6310 Fax +408.883.6358 European Technical Support Phone +49.351.8822.7.772 Fax +49.351.8822.87.772 DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. European Sales (Stuttgart) Phone +49.711.674517.55 Fax +49.711.674517.87955 Evaluation Kit March 6, 2013 Zentrum Mikroelektronik Dresden AG, Japan Office 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan ZMD FAR EAST, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +81.3.6895.7410 Fax +81.3.6895.7301 Phone +886.2.2377.8189 Fax +886.2.2377.8199 Zentrum Mikroelektronik Dresden AG, Korea Office U-space 1 Building 11th Floor, Unit JA-1102 670 Sampyeong-dong Bundang-gu, Seongnam-si Gyeonggi-do, 463-400 Korea Phone +82.31.950.7679 Fax +82.504.841.3026 © 2013 Zentrum Mikroelektronik Dresden AG — Rev. 1.00 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. 9 of 9