DS2782EVKIT Analog Devices

19-4854 Rev 9/09 DS2782EVKIT+ Standalone Fuel Gauge IC Evaluation Kit www.maxim-ic.com FEATURES Demonstrates the capabilities of the DS2782 Standalone Fuel Gauge, including: Estimation of available capacity for Li+ cells Voltage measurement Current measurement Current accumulation Temperature measurement Information storage Identification Interfaces to the USB port of a PC running Windows XP or older operating system EVALUATION KIT CONTENTS 1 pc. Evaluation Board 1 pc. DS9123O USB Adapter 1 pc. RJ-11 Cable EQUIPMENT NEEDED 1. A PC running Windows XP or older operating system and an available USB port. 2. Cables with mini-grabber style clips or the ability to solder directly to connection pads. 3. A Lithium-Ion battery and a power supply and/or load circuit. INDEX Evaluation Kit Contents Equipment Needed Introduction Setup and Installation Board Connections Software Installation Selecting the COM Port Program Menus Menu Windows Status Register Program Tabs Real Time Tab Parameters Tab Memory Tab Log Data Tab Windows XP is a registered trademark of Microsoft Corp. Page 1 of 14 DS2782EVKIT+ INTRODUCTION The DS2782 evaluation kit (EV kit) makes performance evaluation, software development, and prototyping with the DS2782 Standalone Fuel Gauge easy. The evaluation board interfaces to a PC through a DS9123O USB Adapter and RJ-11 cable connection. The DS2782 EV kit evaluation software gives the user complete control of all functions of the DS2782. Separate control tabs allow the user access to all EEPROM and RAM memory locations, all control registers, and real-time updates of all monitored parameters. The software also incorporates a data- logging feature to monitor a cell over time. The evaluation board circuit is designed to provide the DS2782 with accurate parameter measurements. Kit demonstration boards will vary as they are improved upon over time. For information on the demonstration board circuits refer to the individual board datasheets located online at www.maxim- ic.com. SETUP AND INSTALLATION BOARD CONNECTIONS Connections to the TSSOP demonstration board are best made either by soldering directly to the pads or by using cables with mini-grabber clips. Communication to the TSSOP board can be accomplished either through the RJ-11 jack by connecting the provided standard six conductor RJ-11 cord or by wiring directly to the SDA, SCL and P- pads. In the latter case, the size of the board can be reduced by snapping off the RJ-11 jack along the break line, see Figure 1. To utilize the demonstration software, the SDA, SCL and PAC- lines must be connected to the DS9123O communication brick using either of the two methods described. Break Line SCL RJ-11 B+ SDA Figure 1: Communication Connections Figures 2a and 2b show the recommended circuits to simulate charging and discharging. The Lithium-Ion cell is connected between the B+ and B- pads. The battery charger/power supply or circuit load is connected between the B+ and P- pads. The evaluation software can be run in either configuration as long as a cell is connected between the B+ and B- terminals providing a minimum of 2.5 volts to power the DS2782. Leaving the PIO pin unconnected does not interfere with the operation of the demonstration board. Refer to the datasheet for the operation of this pin. 2 of 14 PIO P- B-