M MCP7384X Evaluation Kit User’s Guide 2003 Microchip Technology Inc. DS51424A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART, PRO MATE and PowerSmart are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, microID, MXDEV, MXLAB, PICMASTER, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Application Maestro, dsPICDEM, dsPICDEM.net, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPIC, Select Mode, SmartSensor, SmartShunt, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Serialized Quick Turn Programming (SQTP) is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2003, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona in July 1999 and Mountain View, California in March 2002. The Company’s quality system processes and procedures are QS-9000 compliant for its PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, non-volatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001 certified. DS51424A-page ii 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Table of Contents Preface ........................................................................................................................... v Chapter 1. Product Overview 1.1 1.2 What is the MCP7384X Evaluation Board ................................................ 1 MCP7384X Evaluation Board Kit Components ....................................... 1 Chapter 2. MCP7384X Evaluation Board Installation 2.1 2.2 2.3 Features .................................................................................................. 3 Getting Started ........................................................................................ 3 Detailed Description ................................................................................ 4 Appendix A. Schematic and Layouts A.1 A.2 A.3 A.4 A.5 A.6 Introduction .............................................................................................. 7 Highlights ................................................................................................. 7 Board Schematic ................................................................................... 8 Board - Top Assembly ........................................................................... 9 Board - Top Layer ................................................................................ 10 Board - Bottom Layer ........................................................................... 11 Appendix B. Bill-of-Materials (BOM) Worldwide Sales and Service .................................................................................... 14 2003 Microchip Technology Inc. DS51424A-page iii MCP7384X Eval Kit User’s Guide NOTES: DS51424A-page iv 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Preface INTRODUCTION This section contains general information that will be useful to know before using the MCP7384X Evaluation Board. This board currently supports the following devices: • MCP73841, MCP73842, MCP73843, MCP73844 HIGHLIGHTS This section covers the following topics: • • • • About this Guide Recommended Reading The Microchip Internet Web Site Customer Support ABOUT THIS GUIDE Document Layout The User’s Guide layout is as follows: • Chapter 1: Product Overview – Important information about the MCP7384X Evaluation Board. • Chapter 2: MCP7384X Evaluation Board Installation – For users evaluating the MCP73841, MCP73842, MCP73843 or MCP73844 devices, this chapter describes how to use the various features of the hardware. Appendices: • Appendix A: Schematic and Layouts – shows the schematic and layout diagrams for the MCP7384X Evaluation Board. • Appendix B: Bill of Materials – lists the parts used to build the MCP7384X Evaluation Board. • Worldwide Sales and Service – gives the address, telephone and fax number for Microchip Technology Inc. sales and service locations throughout the world. 2003 Microchip Technology Inc. DS51424A-page v MCP7384X Eval Kit User’s Guide RECOMMENDED READING For more information regarding the MCP7384X devices, the following is recommended reading. MCP7384X Data Sheet (DS21823) This document provides detailed information regarding the MCP7384X Advanced Single or Dual Cell Lithium-Ion/Lithium-Polymer Charge Management Controllers. Technical Library CD-ROM (DS00161) This CD-ROM contains comprehensive application notes, data sheets and technical briefs for all Microchip products. To obtain this CD-ROM, contact the nearest Microchip Sales and Service location (see back page). THE MICROCHIP INTERNET WEB SITE Microchip provides easy access to our documentaition and on-line support through our World Wide Web Site at www.microchip.com. You can download files from the web site or from our FTP site at ftp://ftp.microchip.com. CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • • • • • Distributor or Representative Local Sales Office Field Application Engineer (FAE) Corporate Applications Engineer (CAE) Hot line Customers should call their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. See the back cover for a listing of sales offices and locations. Corporate applications engineers (CAEs) may be contacted at (480) 786-7627. In addition, there is a Systems Information and Upgrade Line. This line provides system users a listing of the latest versions of all of Microchip's development systems software products. Plus, this line provides information on how customers can receive any currently available upgrade kits. The Hotline numbers are: • 1-800-755-2345 for U.S. and most of Canada, and • 1-480-786-7302 for the rest of the world. DS51424A-page vi 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Chapter 1. Product Overview 1.1 WHAT IS THE MCP7384X EVALUATION BOARD The MCP7384X Evaluation Board is an evaluation and demonstration tool for Microchip Technology’s MCP7384X Advanced Single or Dual Cell Lithium-Ion/ Lithium-Polymer Charge Management Controllers. The design provides for dynamic versatility while being able to handle accurate measurements. When connected, this evaluation board allows for the evaluation of the MCP7384X devices in a variety of applications. 1.2 MCP7384X EVALUATION BOARD KIT COMPONENTS The MCP7384X Evaluation Kit contains: • MCP7384X Evaluation Board • MCP73841-420I/UN, MCP73842-840I/UN and MCP73843-420I/MS Devices installed • MCP7384X Data Sheet (DS21823) • MCP7384X Evaluation Kit User’s Guide (DS51424) 2003 Microchip Technology Inc. DS51424A-page 1 MCP7384X Eval Kit User’s Guide NOTES: DS51424A-page 2 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Chapter 2. MCP7384X Evaluation Board Installation 2.1 FEATURES The MCP7384X Evaluation Board has the following features: • • • • • • 2.2 Evaluation of MCP73841/42 in 10-pin MSOP packages Evaluation of MCP73843/44 in 8-pin MSOP packages Simple stand-alone operation or microcontroller compatible Powered from external bench supply or voltage regulated wall cube Surface-mount design Fully assembled and tested GETTING STARTED The MCP7384X Evaluation Board is a fully functional, assembled, and tested surface mount board for evaluation of Microchip’s MCP7384X Advanced Single or Dual Cell Lithium-Ion/Lithim-Polymer Charge Management Controllers. The following steps provide simple stand-alone operation. Refer to Figure 2-1 for the set-up configuration diagram. The set-up configuration diagram depicts evaluation with circuit 1, MCP73841 operation. Note: Do not turn on the input power until all other set-up steps are complete. 1. Connect an external bench supply or voltage regulated wall cube to the appropriate circuit for evaluation. CAUTION: Observe correct polarity of connection. Positive connects to VDDn; negative connects to VSSn; where n represents the circuit to be evaluated. 2. Connect a single or dual cell Li-Ion battery pack to the appropriate circuit for evaluation. Circuits 1 and 3 support single cell applications; circuit 2 supports dual cell applications based on the original devices installed. CAUTION: Observe correct polarity of connection. Positive connects to VBATn; negative connects to VSSn; where n represents the same circuit to be evaluated as step 1. 3. For circuit 1 or circuit 2 evaluation, connect an external battery pack thermistor to the appropriate THERM input. The thermistor should be connected from THERMn to VSSn. If continuous cell temperature monitoring is not desired, utilize circuit 3 or place a 10 kΩ resistor from THERMn to VSSn. 4. Turn on bench supply or plug in wall cube. 5. A GREEN LED should illuminate to indicate the presence of input power. A RED LED provides status during the charge cycle. Refer to the MCP7384X Data Sheet (DS21823) for details. 2003 Microchip Technology Inc. DS51424A-page 3 MCP7384X Eval Kit User’s Guide + Single Lithium-Ion Cell CIRCUIT 1 UNREGULATED WALL CUBE CIRCUIT 2 CIRCUIT 3 FIGURE 2-1: 2.3 Set-up Configuration Diagram. DETAILED DESCRIPTION The MCP7384X Evaluation Board is designed to evaluate simple, stand-alone, linear charging of single or dual cell Lithium-Ion/Lithium-Polymer battery packs. Two single cell reference designs and one dual cell reference design are provided. Each reference design can be evaluated independently and utilizes a different pass transistor, each in a unique package, to demonstrate the versatility of the MCP7384X charge management controllers. The reference designs provide constant current charging followed by constant voltage charging with automatic charge termination. Three levels of constant current, one for each reference design, are demonstrated: 500 mA, 1A and 275 mA for the two single cell reference designs and the dual cell reference design, respectively. The MCP73841 is provided in a 10-pin MSOP package and is equipped with shutdown control, status indicator, safety timer, and continuous cell temperature monitor. The MCP73842 is provided in a 10-pin MSOP package and is equipped with the same features as the MCP73841. The MCP73841 and MCP73842 provide charge management for single and dual cell Lithium-Ion/Lithium-Polymer battery packs, respectively. Alternatively, the MCP73843 is provided in an 8-pin MSOP package. The MCP73843 provides charge management for single cell Lithium-Ion/Lithium-Polymer battery packs. The MCP73843 is equipped with all the features of the MCP73841 and MCP73842, with the exception of the cell temperature monitor. Refer to the MCP7384X data sheet (DS21823) for details on the individual device features. DS51424A-page 4 2003 Microchip Technology Inc. 2.3.1 Input Source The MCP7384X Evaluation Board is designed to provide typical fast charge currents of 1 A, 275 mA and 500 mA for circuits 1, 2 and 3, respectively. A 5V ±10%, 7.5W input source should be utilized to power the evaluation kit when evaluating the single cell charge management devices (MCP73841 and MCP73843). A 10V ±10%, 5W input source should be utilized to power the evaluation kit when evaluating the dual cell charge management device (MCP73842). Independent input source connections are provided for each reference design. Higher or lower fast charge currents can be obtained by adjusting the value of the sense resistors (R6//R7, R9//R18 and R8 for circuits 1, 2 and 3, respectively). A corresponding higher or lower power input source may need to be utilized. Care should be taken not to over-stress the pass transistors with excessive power dissipation when higher fast charge currents are desired. 2.3.2 Reverse-Blocking Protection The MCP7384X Evaluation Board is designed to provide reverse-blocking protection in the event a reversed polarity input source is connected. The reverse-blocking protection diodes also ensure that a faulted or shorted input source will not adversely effect the battery pack. 2.3.3 Battery Headers Independent battery connections are provided for each reference design. For the MCP73841 and MCP73842 reference designs, a connection is provided for a nominal 10 kΩ at 25°C NTC thermistor situated in the battery pack for temperature sensing. Installed resistors provide a charging window when the cell temperature is between -5°C and +55°C when a thermistor with a sensitivity index (β) of 3982 is utilized. When the cell temperature deviates outside the preset window, charging is inhibited. The desired charging window for a variety of thermistors can be obtained by changing the values of resistors R4 and R16 or R5 and R17 for circuits 1 and 2, respectively. Refer to the MCP7384X data sheet (DS21823) for details. CAUTION: Improper connection of the battery may result in damage to the battery and the possibility of personal injury. It is also important to avoid shorting the battery terminals together. 2.3.4 Device Support Options The MCP7384X Evaluation Board supports the entire MCP7384X family and provides three reference designs utilizing the MCP73841, MCP73842, and MCP73843. Alternate devices can be substituted in order to evaluate the different MCP7384X family options. 2.3.5 Microcontroller option Connection points provide easily accessible locations for interface to a host microcontroller. The host microcontroller can be used to disable the charger, monitor charge status or terminate a charge. 2.3.6 Output voltage options The MCP7384X Evaluation Board is provided with a constant voltage mode output voltage of 4.2V and 8.4V for single or dual cell Lithium-Ion/Lithium-Polymer battery packs, respectively. Evaluation with a constant voltage mode output voltage of 4.1V or 8.2V can be achieved by replacing U1, U2 or U3 with the appropriate device. Refer to the MCP7384X data sheet (DS21823) for device ordering information. 2003 Microchip Technology Inc. DS51424A-page 5 MCP7384X Eval Kit User’s Guide NOTES: DS51424A-page 6 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the schematics and layouts for the MCP7384X Evaluation Board. A.2 HIGHLIGHTS Diagrams included in this appendix: • Board Schematic • Board - Top Assembly • Board - Top Layer • Board - Bottom Layer 2003 Microchip Technology Inc. DS51424A-page 7 MCP7384X Eval Kit User’s Guide A.3 BOARD SCHEMATIC D7 J1 Q1 NDS8434 R6 1 J6 VBAT1 1 220m VDD1 R11 1.5k R10 1.5k C2 4.7uF D4 RED R2 100k VBAT1 R7 C6 4.7uF 220m J3 U1 J5 J4 1 D1 GREEN EN1 J2 1 2 3 4 5 1 STAT1 R16 7.32k R4 6.19k SENSE VDD STAT1 EN THREF DRV VBAT VSS TIMER THERM 1 10 9 8 7 6 VSS1 C7 0.1uF MCP73841/MSOP10 1 VSS1 J7 1 THERM1 D8 J8 Q2 IRLMS6702 R9 1 J13 VBAT2 1 390m VDD2 R13 1.5k R12 1.5k C1 4.7uF D5 RED R1 100k VBAT2 R18 C5 4.7uF DNP J10 U2 D2 GREEN J12 J11 1 1 EN2 J9 1 2 3 4 5 STAT2 R17 7.32k R5 6.19k SENSE VDD STAT1 EN THREF DRV VBAT VSS TIMER THERM 1 10 9 8 7 6 VSS2 C8 0.33uF MCP73842/MSOP10 1 VSS2 J14 1 THERM2 D9 J15 J20 R8 1 220m VDD3 R15 1.5k R14 1.5k C3 4.7uF VBAT3 Q3 IRF6100 D6 RED R3 100k 1 VBAT3 C4 4.7uF J17 U3 J19 D3 GREEN J16 1 1 EN3 J18 1 STAT3 1 2 3 4 SENSE VDD STAT1 EN DRV VBAT VSS TIMER MCP73843/MSOP8 1 8 7 6 5 VSS3 C9 0.22uF VSS3 DS51424A-page 8 2003 Microchip Technology Inc. A.4 BOARD - TOP ASSEMBLY 2003 Microchip Technology Inc. DS51424A-page 9 MCP7384X Eval Kit User’s Guide A.5 BOARD - TOP LAYER DS51424A-page 10 2003 Microchip Technology Inc. A.6 BOARD - BOTTOM LAYER 2003 Microchip Technology Inc. DS51424A-page 11 MCP7384X Eval Kit User’s Guide NOTES: DS51424A-page 12 2003 Microchip Technology Inc. M MCP7384X EVAL KIT USER’S GUIDE Appendix B. Bill-of-Materials (BOM) TABLE B-1: Reference Designator BILL OF MATERIALS Quantity Description Manufacturer Manufacturer Part Number C1 - C6 6 4.7 µF, X5R Ceramic, 16V, 1206 Panasonic™ ECJ-3YB1C475K C7 1 0.1 µF, X7R Ceramic, 16V, 0603 Panasonic ECJ-1VB1C104K C8 1 0.33 µF, X5R Ceramic, 16V, 0603 Panasonic ECJ-1VB1A334K C9 1 0.22 µF, X5R Ceramic, 16V, 0603 Panasonic ECJ-1VB1A224K D1 - D3 3 Green LED, 0603 D4 - D6 3 Red LED, 0603 D7 - D9 3 J1 - J20 20 Lumex™ SML-LX0603GW Lumex SML-LX0603SRW Schottky Diode, 1A, 25V, SOD-323 Panasonic MA2YD23 Surface Mount Test Point, 5016 Keystone 5016 NDS8434 Q1 1 P-Channel Power MOSFET, SOIC8 Fairchild Q2 1 P-Channel Power MOSFET, TSOP6 IR Q2 1 P-Channel Power MOSFET, FlipFET IR R1 - R3 3 100 kΩ, 1/16W, Chip Resistor, 0603 Panasonic IRLMS6702 IRF6100 ERJ-3EKF1003V R4 - R5 2 6.19 kΩ, 1/16W, Chip Resistor, 0603 Panasonic ERJ-3EKF6192V R6 - R8 3 0.22Ω, 1/10W, Chip Resistor, 0603 Panasonic ERJ-3RQFR22V R9 3 0.39Ω, 1/10W, Chip Resistor, 0603 Panasonic ERJ-3RQFR39V R10 - R15 6 1.5 kΩ, 1/10W, Chip Resistor, 0603 Panasonic ERJ-3GEYJ152V Panasonic ERJ-3EKF7322V R16 - R17 2 7.32 kΩ, 1/16W, Chip Resistor, 0603 R18 (Note) 0 DNP U1 1 Single Cell Lithium-Ion Charger, MSOP10 Microchip Technology Inc. MCP73841-420I/UN U2 1 Dual Cell Lithium-Ion Charger, MSOP10 Microchip Technology Inc. MCP73842-840I/UN U3 1 Single Cell Lithium-Ion Charger, MSOP8 Microchip Technology Inc. MCP73843-420I/MS Note: R18 is not installed in the original factory installation. Pads are provided for a surface-mount chip resistor in a 0603 package. R18 can be installed in parallel with R9 to adjust the charge current of cicuit 2. Refer to the schematic and the MCP7384X data sheet (DS21823) for more information on choosing the value of the sense resistor. 2003 Microchip Technology Inc. DS51424A-page 13 M WORLDWIDE SALES AND SERVICE AMERICAS ASIA/PACIFIC Corporate Office Australia 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Suite 22, 41 Rawson Street Epping 2121, NSW Australia Tel: 61-2-9868-6733 Fax: 61-2-9868-6755 Atlanta Unit 915 Bei Hai Wan Tai Bldg. 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