ISL9520EVAL1Z

USERS MANUAL ISL9520EVAL1Z AN1826 Rev.0.00 Evaluation Board Setup Procedure February 22, 2013 The ISL9520 is a highly integrated Narrow VDC Whats Needed regulator/battery charger controller for Li-ion/Li-ion polymer The following materials are recommended to perform testing batteries. It has an SMBus interface and provides gate drive to (Figure 1): external switching N-channel FETs that control system voltage, charge current limit, and input current limit. The One adjustable 25V/6A power supply ISL9520EVAL1Z evaluation board includes a USB to SMBus Two adjustable electronic loads with selectable constant interface to allow users to control the ISL9520 from a personal current mode and constant voltage mode computer. One volt meter Whats Inside One 500MHz four-channel oscilloscope with voltage and current probes The ISL9520EVAL1Z Evaluation Board Kit contains the following materials: A personal computer (PC) loaded with ISL9520 control software and drivers Qty (1) ISL9520EVAL1Z Evaluation Board Qty (1) USB cable INTERSIL INTERSIL ISL9520EVAL1Z ISL88731 EVAL2Z REVB SYSTEM SYSTEM OUTPUT AC ADAPTER AC ADAPTER OUTPUT INPUTINPUT +- + SYSTEM LOAD SYSTEM LOAD AC ADAPTER AC ADAPTER ++ + OR OR OORR CC ELECTRONIC LOAD ELECTRONIC LOAD DC POWER SUPPLY - DC POWER SUPPLY - + - 4V TO 25V, 6A - - 5V 20V, 5A + +- BATTERY PACK BATTERY PACK OR OR CV ELECTRONIC LOAD USUSBB ELECTRONIC LOAD - - + BATTERY BATTERY OUTPUT OUTPUT +- TO VARIOUS DC VOLTMETER TO VARIOUS TEST POINTS DC VOLT METER TEST POINTS <10mV to >20v - + FIGURE 1. ISL9520EVAL1Z HARDWARE CONNECTION DIAGRAM AN1826 Rev.0.00 Page 1 of 15 February 22, 2013ISL9520EVAL1Z Figure 2 shows the DAC Controls tab of the ISL9520 user Install the Software interface. Initially, the software will indicate FFFF for the Download and install the ISL9520 control software by following register values. Click the Read All icon to read the actual initial the instructions provided in the ISL9520 Software Installation values in the registers. Guide. This document also contains troubleshooting instructions to be used in the rare event that the software does not install on Charge Current, Input Current, Max System Voltage, and the first attempt. Min System Voltage can be edited by clicking on the up/down arrows or by placing the cursor at the desired location and typing Run the ISL9520 Application the correction. If the sense resistor shunts RS1 or RS2 have been Plug the USB cable up, one end to the computer and the other changed on the board then the sense resistor values in the blue end to the evaluation board. No other connections are required to boxes should also be changed accordingly so that correct binary read and write to the registers. values are sent. The eggshell colored boxes are the digital values sent and read. The ISL9520 evaluation software should be available in your computers Start All Programs list. The Intersil folder will The white WRITE ALL 1/min box should be checked if a contain the program. Click the program name ISL9520 Control continuous test is desired, otherwise the SMBus Inactivity C1 to run the application. Time-out timer will shut down charging after 3 minutes. FIGURE 2. ISL9520 DAC CONTROLS TAB AN1826 Rev.0.00 Page 2 of 15 February 22, 2013