Kit Description Rev. 1.00 / September 2013 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description LED Lighting ICs Wise and Efficient ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description Important Notice Restrictions in Use ZMDI’s ZSLS7025PCB-D1V1 Demonstration Kit hardware is designed for ZSLS7025 demonstration, evaluation, laboratory setup, and module development only. The ZSLS7025PCB-D1V1 Demonstration 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. ZSLS7025 Overview ............................................................................................................................... 4 2.2. ZSLS7025PCB-D1V1 Demonstration Kit Overview ............................................................................... 4 2.3. Power Supply.......................................................................................................................................... 5 2.4. Connections ............................................................................................................................................ 6 2.5. Circuit Operation ..................................................................................................................................... 6 2.6. Schematic Diagram ................................................................................................................................ 7 2.7. ZSLS7025-D1V1 Demonstration Kit Bill of Materials ............................................................................. 8 Ordering Information ..................................................................................................................................... 9 Related Documents ....................................................................................................................................... 9 Glossary ........................................................................................................................................................ 9 Document Revision History ......................................................................................................................... 10 Demo Kit September 4, 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 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description List of Figures Figure 2.1 Figure 2.2 ZSLS7025PCB-D1V1 Demonstration Board (Top View) ................................................................ 5 ZSLS7025PCB-D1V1 Schematic Diagram ...................................................................................... 7 List of Tables Table 2.1 Table 2.2 Connections for the Demonstration Board ...................................................................................... 6 Components Used in the ZSLS7025-D1V1 Demonstration Board .................................................. 8 For more information, contact ZMDI via [email protected]. Demo Kit September 4, 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 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 1 Kit Contents The ZSLS7025PCB-D1V1 Demonstration Kit includes the following: ZSLS7025PCB-D1V1 Demonstration Board v.X (where X refers to the current version) Five ZSLS7025 samples, SOP8 ZLED-PCB10 Test PCB with 12 white 0.5W LEDs ZSLS7025PCB-D1V1 Demonstration Kit Start-up Information Kit Disclaimer The ZSLS7025PCB-D1V1 Demonstration Kit is fully assembled and ready for immediate operation. 2 Kit Description 2.1. ZSLS7025 Overview The ZSLS7025PCB-D1V1 Demonstration Kit provides a quick and easy method for evaluating the ZSLS7025 within its basic application circuit. Reading the ZSLS7025 Data Sheet before using the Demonstration Kit is recommended for understanding the operation of the ZSLS7025 and the Demonstration Board. The ZSLS7025 is a constant current boost converter. Typical applications require an external MOSFET switch. The boost converter topology allows series connection of white LEDs so that the LED currents are identical for uniform brightness with an LED string voltage greater than the input supply voltage. 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 control voltage. A low 0.3V (nominal) 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 ZSLS7025 is available in an SOP-8 package. The ZSLS7025 IC is designed for LED current drive applications of up to 2A or higher. The main features of ZSLS7025 driver are 2.2. 5VDC to 100VDC supply voltage High efficiency: up to 95 % PWM or DC voltage dimming control Adjustable over-voltage protection Over-temperature protection ZSLS7025PCB-D1V1 Demonstration Kit Overview The Demonstration Board contains a standard 4-pin terminal connector to allow the user to easily connect and supply an LED board. The Demonstration Board also has two LED power pads (LED+ and LED-) to provide more flexibility in supplying a power LED or LED string. The board includes an external power MOSFET switch. The layout with any switching regulator is crucial to minimize radiated EMI. A shielded inductor is selected to minimize radiated EMI. This reference design keeps the critical trace lengths to a minimum. The ground plane has been maximized around critical areas. Demo Kit September 4, 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 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description The Demonstration Board offers the following features and benefits: Wide input voltage range (see section 2.4) Standard 2.54mm 4-pin header for attaching LEDs and additional duplicate surface-mounted device (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 or DC control voltage 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 to minimize radiated EMI Cooling pad (bottom layer) with many vias for the power MOSFET switch The high current paths are as short as possible to ensure system precision and efficiency No ground plane under the EMI radiated components to prevent noise injection in the ground plane Figure 2.1 ZSLS7025PCB-D1V1 Demonstration Board (Top View) J1: Positive Pin for Power Supply and Alternative VDC+ Pad ZSLS7025 Pin 1 J3: Negative Pins 1 and 2 for LED String Connection and Alternative LED- Pad Caution: Ensure proper polarity. J1: Negative Pin for Power Supply and Alternative VDC- Pad Caution: Ensure proper polarity. 2.3. J2 Connector for PWM Dimming Signal (pin 1 is on the left) J3: Positive Pins 3 and 4 for LED String Connection and Alternative LED+ Pad Power Supply The board requires a DC power supply of 5V for the LED string that also must be 3V lower than the normal working output voltage (the total forward voltage of the LED or the LED string). It can be connected either via J1 or alternative pads as described in Table 2.1. The maximum supply voltage of the ZSLS7025PCB-D1V1 is 19V due to the sizing of the components used on the boards. See the ZSLS7025 Data Sheet for information on designing the circuit to allow higher input DC power supply values. ! Caution: Ensure proper polarity when making connections. The system is not reverse polarity protected. Demo Kit September 4, 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 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 2.4. Connections Refer to Figure 2.1 for identification of the following connections for the Demonstration Board. Table 2.1 Connections for the Demonstration Board Connector Description J1 Standard 2.54mm 2-pin male header for power supply. Input voltage range: 5VDC to 19VDC. See section 2.3 for additional requirements. J1 is an alternative connection that can be used instead of the VDC+ and VDC- pads. J2 Standard 2.54mm 3-pin male header for dimming the brightness of the LEDs with an external PWM signal or DC control voltage. Pin1: VDC(+) Pin 2: Dimming signal – PWM or DC Voltage Pin 3: GND J3 Standard 2.54mm 4-pin female header with the following connections. Pins 1 and 2: LED- negative pole for voltage output to drive the LED string (also see LED- pad) Pins 3 and 4: LED+ positive pole for voltage output to drive the LED string (also see LED+ pad) VDC+ Positive pad for an optional alternative connection for the power supply (instead of J1 positive pin). VDC- Negative pad for an optional alternative connection for the power supply (instead of J1 negative pin). LED+ Positive pad for an optional alternative connection for the positive ZLED7025 driver supply voltage (instead of J3, pins 3 and 4). LED- Negative pad for an optional alternative connection for the negative ZLED7025 driver supply voltage (instead of J3, pins 1 and 2). 2.5. Circuit Operation The nominal output current of the Demonstration Board is set to 150mA, but it can be adjusted by changing the set resistor RFB according to the formula: ILED = VFB / RFB Where ILED = Average output current through the LED(s) in amperes. ILED = 0.15A for RFB = 2Ω. VFB = Internal feedback reference voltage of the ZSLS7025: approx. 0.3V. RFB= Nominal current output setting resistor in ohms, which is approximately 2Ω on the Demonstration Board The over-voltage protection level is set to 44V for the Demonstration Board, which limits the maximum LED string voltage, is determined by the following formula for VOVP in volts: VOVP = 1V * (R1+R2) / R2 VOVP = 44V for R1 = 430 kΩ and R2= 10kΩ. Note that the capacitors must be re-designed for higher voltages if a higher over-voltage protection level is required. For detailed calculations related to switching frequency and dimming control, refer to the ZSLS7025 Data Sheet. Demo Kit September 4, 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 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 2.6. Schematic Diagram ZSLS7025PCB-D1V1 Schematic Diagram 1 J3 56k R4 C1 47uF Cout1 1uF R3 10k Rf b 2R 4 3 2 1 1 LED- LED+ Figure 2.2 100k 1 2 0.3R GATE 5 CS 6 7 FB GND ADJ 24k Rtof f 4 ADJ 100nF 47uF Cv dd Cin2 Cin1 10uF TOFF 3 2.2k Rv dd 1 2 VCC 1 U1 L1 82uH ZSLS7025 OVP 8 Rcs J2 3 10k R2 430k Q1 FQD13N06L D1 SS26 R1 R5 Cout2 100nF + 1 VDC- + J1 1 VDC+ 1 2 September 4, 2013 Ext. Power + Demo 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. 7 of 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 2.7. ZSLS7025-D1V1 Demonstration Kit Bill of Materials Table 2.2 Item Components Used in the ZSLS7025-D1V1 Demonstration Board Manufacturer Part Manufacturer Description Pkg Type U1 ZSLS7025 ZMDI Converter IC SOP8 Q1 FQD13N06L Fairchild n-FET D-PAK D1 SS26 Vishay Schottky diode SMA 60V / 2A Cin1 Electrolytic cap d8 x 10 SMD 47u / 63V Cvdd MLCC Cout1 Electrolytic cap 0805 d8 x 10 SMD 60V / 7A / 4.8nC 10u / 16V / X5R 47u / 63V C1 MLCC 0805 1u / 16V / X5R Cin2 MLCC 0805 100n / 50V / X7R Cout2 MLCC 0805 100n / 100V / X7R Rvdd Chip resistor 0805 2.2kΩ / 1% Rtoff Chip resistor 0805 24kΩ / 1% Rcs Chip resistor 0805 0.3RΩ / 1% R1 Chip resistor 0805 430kΩ / 1% R2 Chip resistor 0805 10kΩ / 1% R3 Chip resistor 0805 10kΩ / 1% R4 Chip resistor 0805 56kΩ / 1% R5 Chip resistor 0805 100kΩ / 1% Rfb Chip resistor 0805 2R / 1% / 100ppm 7345 82uH / 0.9A sat / 0.26Ω L1 744777182 Wurth SMD inductor, shielded J1 SL 11 124 Fischer Elektronik Header, male 2x1 / 2.54mm TH 2-pin / 0.63mm J2 SL 11 124 Fischer Elektronik Header, male 3x1 / 2.54mm TH 3-pin / 0.63mm J3 BL17SMD.04Z Fischer Elektronik Header, female 4x1 / 2.54mm SMT 4-pin / 0.63mm Demo Kit September 4, 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. 8 of 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 3 Ordering Information Product Sales Code Description ZSLS7025PCB-D1V1 ZSLS7025PCB-D1V1 Demonstration Kit V1.0 includes 5 IC samples 4 Related Documents (Note X.x refers to the latest version of the document.) Document File Name ZSLS7025 Datasheet ZSLS7025_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 SOP8 8-Pin Small Outline Package Demo 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. September 4, 2013 9 of 10 ZSLS7025 ZSLS7025PCB-D1V1 Demonstration Kit Description 6 Document Revision History Revision Date Description 1.00 September 4, 2013 Initial 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 Demo Kit September 4, 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. 10 of 10