USER'S MANUAL ISL85003DEMO1Z, ISL85003ADEMO1Z AN1935 Rev.0.00 May 16, 2014 Demonstration Board User Guide Description Quick Setup Guide The ISL85003 and ISL85003A Demo kits are intended for use for point-of-load applications sourcing from 4.5V to 18V. The kits are used to demonstrate the performance of the ISL85003 and ISL85003A, high efficiency synchronous buck regulators. The ISL85003 and ISL85003A are offered in a 4x3mm dual flat no lead (DFN) package. 1. Ensure that the circuit is correctly connected to the supply and loads prior to applying any power. Recommended Equipment 4. Verify the output voltage is 5V for VOUT. The following materials are recommended to perform testing: * 0V to 25V power supply with at least 10A source current capability * Electronic loads capable of sinking current up to 7A * Digital Multimeters (DMMs) * 100MHz quad-trace oscilloscope 3. Turn on the power supply. Evaluating the Other Output Voltage The ISL85003DEMO1Z kit output is preset to 5V; however, output voltages are programmed using an external resistor divider that scales the feedback relative to the internal reference voltage. Please refer to the application note AN1930 and the ISL85003, ISL85003A datasheet for further information. Disabling/Enabling Function Key Features The ISL85003DEMO1Z board has EN pin tied to VIN via R7. This keeps the part enabled all the time. To disable the part, remove R7. * Input voltage range 4.5V to 18V * Current mode control - 2. Connect the bias supply to VIN, the plus terminal to VIN and the negative return to PGND. DCM/PWM Internal or external compensation options 500kHz switching frequency option External synchronization up to 2MHz on ISL85003 * Adjustable soft-start time on the ISL85003A * Continuous output current up to 3A * Minimal external components required References MODE/SS Control The ISL85OO3 demonstration board has a MODE pin that allows different mode operation. Default board configuration has R6 = 200k to VCC, which defaults to PWM operation mode. If this pin is tied to GND the IC will operate in CCM mode. The ISL85OO3A demonstration board has an SS pin that provides a programmable soft-start. When the chip is enabled, the regulated 4A pull-up current source charges a capacitor C10 connected from SS to ground. Default board configuration has R6 = 200k to VCC, which defaults to internal SS. ISL85003, ISL85003A Datasheet Ordering Information PART NUMBER DESCRIPTION ISL85003DEMO1Z Small form factor Demo board for 3A, 4.5V to 18V Switching Regulator, external synchronization. ISL85003ADEMO1Z Small form factor Demo board for 3A, 4.5V to 18V Switching Regulator, adjustable soft-start time TOP SIDE BOTTOM SIDE FIGURE 1. ISL85003ADEMO1Z PICTURES AN1935 Rev.0.00 May 16, 2014 Page 1 of 4 Demonstration Board User Guide ISL85003DEMO1Z, ISL85003ADEMO1Z ISL85003ADEMO1Z Board Layout FIGURE 3. SILK SCREEN BOTTOM FIGURE 2. SILK SCREEN TOP ISL85003ADEMO1Z Schematic D2 U1 1 BOOT SS PG VO EN R1 C7 301K DNP UNNAMED_1_SMCAP_I185_A 4.7PF C8 SS BOOT 12 2 PG VDD 11 3 EN/SS VIN 10 4 FB VIN 9 5 COMP PHASE 8 6 AGND PHASE 7 R3 UNNAMED_1_SMCAP_I186_A C4 1 DNP 13 UNNAMED_1_SMCAP_I193_A VO 3 2 VCC VCC P4 VIN C9 C2 1UF 10UF C1 10UF P5 GND C3 EP 0.1UF DNP A R11 0 L1 ISL85003AFRZ R2 P7 UNNAMED_1_POWERIND_I179_A VO VO 4.7UH 57.6K C5 22UF C6 C11 22UF 22UF A A P9 GND VCC VIN VCC SS R7 200K R14 PG 200K R6 200K VCC A EN NOTE: If the IC is used in an application where the input test leads have large parasitic inductance, the input electrolytic capacitor C10 may be added to prevent transient voltages on the input pin. C10 OPEN DRAWN BY: A AN1935 Rev.0.00 May 16, 2014 TU BUI DATE: 2/27/2014 ENGINEER: TU BUI DA Page 2 of 4 Demonstration Board User Guide ISL85003DEMO1Z, ISL85003ADEMO1Z ISL85003DEMO1Z, ISL85003ADEMO1Z Bill of Materials QTY UNIT S REFERENCE DESIGNATOR ISL85003FRZ 1 ea. U1 IC-3A BUCK REGULATOR, 12P, DFN, 4X3, ROHS ISL85003AFRZ 1 ea. U1 IC-3A BUCK REGULATOR PWM, 12P, INTERSIL DFN, 4X3, ROHS ISL85003AFRZ H1044-00104-50V10-T 1 ea. C3 CAP, SMD, 0402, 0.1F, 50V, 10%, X7R, ROHS TDK C1005X7R1H104K H1044-004R7-50VR25-T 1 ea. C4 CAP, SMD, 0402, 4.7PF, 50V, 0.25pF, AVX NPO, ROHS 04025A4R7CAT2A H1044-DNP 0 ea. C7, C10 H1045-00105-16V10-T 1 ea. C9 H1065-00106-25V10-T 2 ea. H1065-00226-16V10-T 3 744311470 PART NUMBER DESCRIPTION MANUFACTURER INTERSIL MANUFACTURER PART ISL85003FRZ CAP, SMD, 0402, DNP-PLACE HOLDER, ROHS CAP, SMD, 0603, 1F, 16V, 10%, X5R, ROHS MURATA GRM188R61C105KA12D C1, C2 CAP, SMD, 1206, 10F, 25V, 10%, X7R, ROHS VENKEL C1206X7R250-106KNE ea. C5, C6, C11 CAP, SMD, 1206, 22F, 16V, 10%, X5R, ROHS VENKEL C1206X5R160-226KNE 1 ea. L1 COIL-PWR CHOKE, SMD, 7X6.9, 4.7H, 20%, 6A, 19.5m, ROHS WURTH ELECTRONICS 744311470 MIDCOM INC. BAT54C-T 1 ea. D2 DIODE-RECTIFIER, SMD, SOT23, 3P, 30V, 200mA, ROHS FAIRCHILD H2510-00R00-1/16W-T 1 ea. R11 RES, SMD, 0402, 0, 1/16W, 5%, TF, VENKEL ROHS CR0402-16W-00T H2510-02003-1/16W1-T 3 ea. R6, R7, R14 RES, SMD, 0402, 200k, 1/16W, 1%, ROHM TF, ROHS MCR01MZPF2003 H2510-03013-1/16W1-T 1 ea. R1 RES, SMD, 0402, 301k, 1/16W, 1%, YAGEO TF, ROHS RC0402FR-07301KL H2510-05762-1/16W1-T 1 ea. R2 RES, SMD, 0402, 57.6k, 1/16W, 1%, PANASONIC TF, ROHS ERJ-2RKF5762X AN1935 Rev.0.00 May 16, 2014 BAT54C Page 3 of 4 Notice 1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. You are fully responsible for the incorporation or any other use of the circuits, software, and information in the design of your product or system. Renesas Electronics disclaims any and all liability for any losses and damages incurred by you or third parties arising from the use of these circuits, software, or information. 2. Renesas Electronics hereby expressly disclaims any warranties against and liability for infringement or any other claims involving patents, copyrights, or other intellectual property rights of third parties, by or arising from the use of Renesas Electronics products or technical information described in this document, including but not limited to, the product data, drawings, charts, programs, algorithms, and application examples. 3. No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics or others. 4. You shall not alter, modify, copy, or reverse engineer any Renesas Electronics product, whether in whole or in part. Renesas Electronics disclaims any and all liability for any losses or damages incurred by 5. Renesas Electronics products are classified according to the following two quality grades: "Standard" and "High Quality". The intended applications for each Renesas Electronics product depends on the you or third parties arising from such alteration, modification, copying or reverse engineering. product's quality grade, as indicated below. "Standard": Computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home electronic appliances; machine tools; personal electronic equipment; industrial robots; etc. "High Quality": Transportation equipment (automobiles, trains, ships, etc.); traffic control (traffic lights); large-scale communication equipment; key financial terminal systems; safety control equipment; etc. Unless expressly designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not intended or authorized for use in products or systems that may pose a direct threat to human life or bodily injury (artificial life support devices or systems; surgical implantations; etc.), or may cause serious property damage (space system; undersea repeaters; nuclear power control systems; aircraft control systems; key plant systems; military equipment; etc.). Renesas Electronics disclaims any and all liability for any damages or losses incurred by you or any third parties arising from the use of any Renesas Electronics product that is inconsistent with any Renesas Electronics data sheet, user's manual or other Renesas Electronics document. 6. When using Renesas Electronics products, refer to the latest product information (data sheets, user's manuals, application notes, "General Notes for Handling and Using Semiconductor Devices" in the reliability handbook, etc.), and ensure that usage conditions are within the ranges specified by Renesas Electronics with respect to maximum ratings, operating power supply voltage range, heat dissipation characteristics, installation, etc. Renesas Electronics disclaims any and all liability for any malfunctions, failure or accident arising out of the use of Renesas Electronics products outside of such specified ranges. 7. Although Renesas Electronics endeavors to improve the quality and reliability of Renesas Electronics products, semiconductor products have specific characteristics, such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Unless designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not subject to radiation resistance design. You are responsible for implementing safety measures to guard against the possibility of bodily injury, injury or damage caused by fire, and/or danger to the public in the event of a failure or malfunction of Renesas Electronics products, such as safety design for hardware and software, including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. Because the evaluation of microcomputer software alone is very difficult and impractical, you are responsible for evaluating the safety of the final products or systems manufactured by you. 8. Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product. You are responsible for carefully and sufficiently investigating applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive, and using Renesas Electronics products in compliance with all these applicable laws and regulations. Renesas Electronics disclaims any and all liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations. 9. Renesas Electronics products and technologies shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. You shall comply with any applicable export control laws and regulations promulgated and administered by the governments of any countries asserting jurisdiction over the parties or transactions. 10. It is the responsibility of the buyer or distributor of Renesas Electronics products, or any other party who distributes, disposes of, or otherwise sells or transfers the product to a third party, to notify such third party in advance of the contents and conditions set forth in this document. 11. This document shall not be reprinted, reproduced or duplicated in any form, in whole or in part, without prior written consent of Renesas Electronics. 12. Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronics products. (Note 1) "Renesas Electronics" as used in this document means Renesas Electronics Corporation and also includes its directly or indirectly controlled subsidiaries. (Note 2) "Renesas Electronics product(s)" means any product developed or manufactured by or for Renesas Electronics. (Rev.4.0-1 November 2017) http://www.renesas.com SALES OFFICES Refer to "http://www.renesas.com/" for the latest and detailed information. Renesas Electronics America Inc. 1001 Murphy Ranch Road, Milpitas, CA 95035, U.S.A. Tel: +1-408-432-8888, Fax: +1-408-434-5351 Renesas Electronics Canada Limited 9251 Yonge Street, Suite 8309 Richmond Hill, Ontario Canada L4C 9T3 Tel: +1-905-237-2004 Renesas Electronics Europe Limited Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K Tel: +44-1628-651-700, Fax: +44-1628-651-804 Renesas Electronics Europe GmbH Arcadiastrasse 10, 40472 Dusseldorf, Germany Tel: +49-211-6503-0, Fax: +49-211-6503-1327 Renesas Electronics (China) Co., Ltd. Room 1709 Quantum Plaza, No.27 ZhichunLu, Haidian District, Beijing, 100191 P. R. China Tel: +86-10-8235-1155, Fax: +86-10-8235-7679 Renesas Electronics (Shanghai) Co., Ltd. Unit 301, Tower A, Central Towers, 555 Langao Road, Putuo District, Shanghai, 200333 P. R. China Tel: +86-21-2226-0888, Fax: +86-21-2226-0999 Renesas Electronics Hong Kong Limited Unit 1601-1611, 16/F., Tower 2, Grand Century Place, 193 Prince Edward Road West, Mongkok, Kowloon, Hong Kong Tel: +852-2265-6688, Fax: +852 2886-9022 Renesas Electronics Taiwan Co., Ltd. 13F, No. 363, Fu Shing North Road, Taipei 10543, Taiwan Tel: +886-2-8175-9600, Fax: +886 2-8175-9670 Renesas Electronics Singapore Pte. Ltd. 80 Bendemeer Road, Unit #06-02 Hyflux Innovation Centre, Singapore 339949 Tel: +65-6213-0200, Fax: +65-6213-0300 Renesas Electronics Malaysia Sdn.Bhd. Unit 1207, Block B, Menara Amcorp, Amcorp Trade Centre, No. 18, Jln Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia Tel: +60-3-7955-9390, Fax: +60-3-7955-9510 Renesas Electronics India Pvt. Ltd. No.777C, 100 Feet Road, HAL 2nd Stage, Indiranagar, Bangalore 560 038, India Tel: +91-80-67208700, Fax: +91-80-67208777 Renesas Electronics Korea Co., Ltd. 17F, KAMCO Yangjae Tower, 262, Gangnam-daero, Gangnam-gu, Seoul, 06265 Korea Tel: +82-2-558-3737, Fax: +82-2-558-5338 (c) 2018 Renesas Electronics Corporation. All rights reserved. Colophon 7.0