ISL80103EVAL2Z

USER’S MANUAL ISL80103EVAL2Z, ISL80102EVAL2Z AN1661 Rev 0.00 Sep 2, 2011 ISL80102, ISL80103 High Performance 2A and 3A LDOs Evaluation Board User Guide Description Required Equipment The ISL80102 and ISL80103 are high performance, low voltage, high current low dropout linear regulator specified at 2A and 3A, respectively. Rated for an input voltage from 2.2V to 6V, these LDOs can provide outputs from 0.8V to 5V on the adjustable version. The ISL80103EVAL2Z provides a simple platform to evaluate performance of the ISL80102, ISL80103. The following equipment is recommended to perform the tests: The ISL80103EVAL2Z evaluation board comes with the adjustable output version of the IC. Jumpers are provided to set the desired output voltage. Fixed output versions are sampled in the accompanying kit. • 200MHz oscilloscope The figures with operating conditions at 3A in this Application Note are applicable only to the ISL80103. All other information is applicable to both the ISL80102 and ISL80103. What’s Inside The evaluation kit contains the following: • The ISL80103EVAL2Z • Fixed output versions of either the ISL80102 or the ISL80103 • 0V to 6V power supply capable of sourcing at least 5A • Electronic load capable of sinking up to 5A • Digital multimeters Test Procedure 1) Select the desired output voltage by shorting one of the jumpers from J1 through J6. 2) Ensure that output capacitor and Cpb are set according to recommended values shown in Table 1. 3) Place jumper JP1 in the ‘enable’ position. It is recommended to not leave the ENABLE pin floating. 4) Set the power supply for the desired input voltage and the load as desired and connect them to the input and output of the board, respectively. 5) Turn the power supply on and observe the output. • The ISL80102, ISL80103 data sheet (FN6660) • This evaluation kit document FIGURE 1. ISL80103EVAL2Z AN1661 Rev 0.00 Sep 2, 2011 Page 1 of 8 ISL80103EVAL2Z, ISL80102EVAL2Z Optimizing LDO Performance TABLE 1. Performance of the ISL80102, ISL80103 can be optimized by following these simple guidelines. VOUT RTOP RBOTTOM CPB COUT 5.0V 2.61kΩ 287Ω 47pF 10µF Phase Boost Capacitor (CPB) 3.3V 2.61kΩ 464Ω 47pF 10µF On the adjustable version of the ISL80102, ISL80103, phase margin and crossover frequency can be increased by placing a small capacitor across the top resistor in the feedback resistor divider. Cpb and Rtop as shown in Figure 2 place a zero at Fz = 1/(2••RTOP•CPB) 2.5V 2.61kΩ 649Ω 47pF 10µF 1.8V* 2.61kΩ 1.0kΩ 47pF 10µF 1.8V* 2.61kΩ 1.0kΩ 82pF 22µF 1.5V 2.61kΩ 1.3kΩ 82pF 22µF 1.2V 2.61kΩ 1.87kΩ 150pF 47µF 1.0V 2.61kΩ 2.61kΩ 150pF 47µF 0.8V 2.61kΩ 4.32kΩ 150pF 47µF The zero increases the crossover frequency of the LDO and provides additional phase resulting in faster load transient response. VIN VOUT ENABLE PG ISL80102, ISL80103 RTOP C PB ADJ COUT C IN SS RBOTTOM FIGURE 2. ISL80102, ISL80103 TYPICAL APPLICATION NOTE: *Either option could be used depending on cost/performance requirements Layout Guidelines A good PCB layout is important to achieve expected performance. Consideration should be taken when placing the components and routing the trace to minimize the ground impedance. Parasitic inductance should be kept to a minimum. The input and output capacitors should have a good ground connection and be placed as close to the IC as possible. The ‘SENSE’ trace in fixed voltage parts and the ‘ADJ’ trace in adjustable voltage parts must be away from noisy planes and traces. Output Capacitor (COUT) Output capacitor selection is important to achieve the desired load transient performance. The ISL80102, ISL80103 uses stateof-the-art internal compensation to be compatible with different types of output capacitors, including multi-layer ceramic, POSCAP and aluminum/tantalum electrolytic. There is a growing trend to use very-low ESR multi-layer ceramic capacitors (MLCC) for applications because they can support fast load transients and also bypass very high frequency noise from other sources. However, effective capacitance of MLCC's drops with applied voltage, age and temperature. X7R and X5R dielectric ceramic capacitors are strongly recommended as they typically maintain a capacitance range within ±20% of nominal over full operating ratings of temperature and voltage. Table 1 gives the recommended values for output capacitor (MLCC X5R/X7R) and CPB for different voltage rails. The right selection of output capacitor and CPB also helps to provide better PSRR at high frequencies. AN1661 Rev 0.00 Sep 2, 2011 Page 2 of 8 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -40 ADJ PIN VOLTAGE VARIATION (%) DROPOUT VOLTAGE (mV) ISL80103EVAL2Z, ISL80102EVAL2Z 2A 3A 1A -25 -10 5 20 35 50 65 80 95 110 0.2 0 -0.2 -0.4 -0.6 -0.8 -40 125 -20 0 20 FIGURE 3. DROPOUT vs TEMPERATURE 80 100 120 0.10 ADJ PIN VOLTAGE VARIATION (%) ADJ PIN VOLTAGE VARIATION (%) 60 FIGURE 4. OUTPUT VOLTAGE vs TEMPERATURE 0.10 0.05 0 -0.05 -0.10 -0.15 -0.20 2.2 40 TEMPERATURE (°C) TEMPERATURE (°C) 0.05 0 2.7 3.2 3.7 4.2 4.7 5.2 5.7 0 0.5 1.0 1.5 2.0 2.5 LOAD CURRENT (A) INPUT VOLTAGE (V) FIGURE 5. OUTPUT VOLTAGE vs INPUT VOLTAGE FIGURE 6. OUTPUT VOLTAGE vs LOAD CURRENT 1V/DIV ENABLE 2V/DIV 20mV/DIV VOUT 2V/DIV 10µs/DIV 3A 10mA PG 50µs/DIV FIGURE 7. START-UP WAVEFORMS AN1661 Rev 0.00 Sep 2, 2011 FIGURE 8. LOAD TRANSIENCE FOR VOUT = 1.0V, COUT = 47µF, Cpb = 150pF Page 3 of 8 3.0 ISL80103EVAL2Z, ISL80102EVAL2Z 20mV/DIV 50mV/DIV 10µs/DIV 3A 10µs/DIV 3A 10mA 10mA FIGURE 9. LOAD TRANSIENCE FOR VOUT = 1.2V, COUT = 47µF, Cpb = 150pF FIGURE 10. LOAD TRANSIENCE FOR VOUT = 1.5V, COUT = 22µF, Cpb = 82pF 50mV/DIV 50mV/DIV 10µs/DIV 3A 10µs/DIV 3A 10mA 10mA FIGURE 11. LOAD TRANSIENCE FOR VOUT = 1.8V, COUT = 22µF, Cpb = 82pF 50mV/DIV 50mV/DIV 10µs/DIV 3A 10mA FIGURE 13. LOAD TRANSIENCE FOR VOUT = 2.5V, COUT = 10µF, Cpb = 47pF AN1661 Rev 0.00 Sep 2, 2011 FIGURE 12. LOAD TRANSIENCE FOR VOUT = 1.8V, COUT = 10µF, Cpb = 47pF 10µs/DIV 3A 10mA FIGURE 14. LOAD TRANSIENCE FOR VOUT = 3.3V, COUT = 10µF, Cpb = 47pF Page 4 of 8 ISL80103EVAL2Z, ISL80102EVAL2Z 90 90 80 80 100mA 70 NO LOAD 60 PSRR (dB) PSRR (dB) 60 50 40 30 1000mA 300mA 20 50 100mA 40 30 1000mA 20 10 100 1k 10k 100k 0 10 1M 100 FREQUENCY (Hz) 90 300mA 80 90 100mA 1000mA 80 100k 1M 100mA 70 60 50 2000mA 1000mA 40 30 50 10 10 1k 10k 100k 300mA 0 10 1M 3000mA 30 20 100 2000mA 40 20 10 NO LOAD 60 NO LOAD PSRR (dB) PSRR (dB) 10k FIGURE 16. PSRR FOR VOUT = 1.2V, COUT = 47µF, Cpb = 150pF 70 0 1k FREQUENCY (Hz) FIGURE 15. PSRR FOR VOUT = 1.0V, C OUT = 47µF, Cpb = 150pF 100 FREQUENCY (Hz) 90 60 60 1000mA PSRR (dB) 70 NO LOAD 40 30 3000mA 30 10 10 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 19. PSRR FOR VOUT = 2.5V, C OUT = 10µF, Cpb = 47pF AN1661 Rev 0.00 Sep 2, 2011 300mA NO LOAD 40 20 100 100mA 50 20 0 10 1M 80 300mA 2000mA 100k 90 70 50 10k FIGURE 18. PSRR FOR V OUT = 1.8V, C OUT = 22µF, Cpb = 82pF 100mA 80 1k FREQUENCY (Hz) FIGURE 17. PSRR FOR VOUT = 1.5V, COUT = 22µF, Cpb = 82pF PSRR (dB) 300mA 10 10 0 NO LOAD 70 2000mA 0 10 1000mA 3000mA 100 1k 10k 100k 1M FREQUENCY (Hz) FIGURE 20. PSRR FOR VOUT = 3.3V, COUT = 10µF, Cpb = 47pF Page 5 of 8 ISL80103EVAL2Z, ISL80102EVAL2Z VOUT VIN VOUT VIN CON2 CON1 C5 C3 CPB R1 C6 R2 ADJ ISL80102, ISL80103 C4 N/C PG EN GND SS JP1 TP1 J1 J2 J3 J4 J5 J6 R3 R4 R5 R6 R7 R8 TP2 C2 CON4 CON3 TABLE 2. BILL OF MATERIALS ITEM QTY REFERENCE DESIGNATOR VALUE 1 2 C5, C6 10µF CAP, SMD, 0805, 16V, 10%, Generic 2 1 CPB 47pF CAP, SMD, 0603 Generic 3 1 U1 ISL80102IRAJZ or ISL80103IRAJZ Intersil 4 1 R1 2.61kΩ RES, SMD, 0603, 1% Generic 5 1 R2 100kΩ RES, SMD, 0603, 1% Generic 6 1 R3 1kΩ RES, SMD, 0603, 1% Generic 7 1 R4 464Ω RES, SMD, 0603, 1% Generic 8 1 R5 1.3kΩ RES, SMD, 0603, 1% Generic 9 1 R6 1.87kΩ RES, SMD, 0603, 1% Generic 10 1 R7 2.61kΩ RES, SMD, 0603, 1% Generic 11 1 R8 649Ω RES, SMD, 0603, 1% Generic 12 1 JP1 Jumper Generic 13 6 J1, J2, J3, J4, J5, J6 Jumper Generic 14 1 TP1 Test Point Keystone 5007 15 4 CON1, CON2, CON3, CON4 Terminal Connector Keystone 1514-2 C2, C3, C4, TP2 AN1661 Rev 0.00 Sep 2, 2011 DESCRIPTION MANUFACTURER PART NUMBER ISL80102IRAJZ or ISL80103IRAJZ DNP Page 6 of 8 ISL80103EVAL2Z, ISL80102EVAL2Z FIGURE 21. ISL80103EVAL2Z COMPONENT PLACEMENT FIGURE 22. ISL80103EVAL2Z TOP LAYER FIGURE 23. ISL80103EVAL2Z BOTTOM LAYER AN1661 Rev 0.00 Sep 2, 2011 Page 7 of 8 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 Düsseldorf, 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 © 2018 Renesas Electronics Corporation. All rights reserved. Colophon 7.0