ISL92115.8EVAL1Z, ISL92116.8EVAL1Z Evaluation Board Application Manual ® Application Note January 14, 2009 AN1440.1 Description Key Features The ISL92115.8/6.8EVAL1Z is an evaluation kit which is used for evaluating Li-ion battery charger protection ICs. This evaluation kit is designed to deliver up to 800mA charge current to battery applications. • A Complete Evaluation Platform for the ISL9211 Protection IC Evaluation The ISL9211 protects the charging system from three circuit failures, as follows. 1. Input overvoltage • Input Accepts Voltage up to 24V • Flexible Power Connectors Each with a Hook and a Solder Pad Providing Variety to Users • Test Points for Key Signal Measurement • Pb-free (RoHS compliant) 2. Short circuit in charging system 3. Overcharged battery What is Needed When any of the three parameters exceeds its limit, the IC turns off an internal N-Channel MOSFET to remove the power from the charging system to the battery. The ISL9211 has two input OVP options, which are 5.8V and 6.8V. The following instruments will be needed to perform testing: • Power Supplies: - PS1: DC 30V/2A - PS2: DC 10V/2A Refer to the ISL9211 datasheet for more details: http://www.intersil.com/data/fn/fn6658.pdf • DC Electronic Load: 20V/2A Pinout • Oscilloscope • Cables and Wires ISL9211 (8 LD 2x2 µTDFN) TOP VIEW Ordering Information VIN 1 8 OUT GND 2 7 ILIM NC 3 6 VB FAULT 4 • Multimeters PART NUMBER DESCRIPTION ISL92115.8EVAL1Z Evaluation Board for ISL9211 ISL92116.8EVAL1Z Evaluation Board for ISL9211 5 GND 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008, 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. Application Note 1440 Quick Setup Guide (Refer to Figure 1) Overcurrent Protection Step 11: Turn on the E-load. Increase the current of the load to 1A ±70mA reading on the current meter. Step 12: Voltmeter V2 reads 0V. Step 13: Turn off the E-load. Step 14: Voltmeter V2 reads 5V DO NOT APPLY POWER UNTIL STEP 6 Step 1: Set power supply PS1 to 5V and current limit to 2A, and connect it to VIN pin of the board. Step 2: Connect Voltmeter V1 across VIN to ground. Step 3: Set PS2 to 3.6V and the current limit to 0.2A. Then connect the power supply to VBAT of the board. Battery Overvoltage Protection Step 15: Turn on PS2. Step 16: Increase the voltage of PS2 to 4.6V. Step 4: Connect E-load in series with a current meter to OUT. Step 17: Voltmeter V2 reads 0V. Step 5: Connect Voltmeter V2 across OUT to ground. Step 18: Decrease the voltage of PS2 to 3.6V. Step 6: Turn on PS1. Voltmeter V1 should read 5V, and Voltmeter V2 should read 5V. Step 19: Voltmeter V2 reads 5V. Test Procedures Input Overvoltage Protection Step 7: Increase PS1 to 5.8V ±200mV for 5.8V option IC and to 6.8V ±200mV for 6.8V option IC. Step 8: Voltmeter V2 reads 0V Step 9: Decrease voltage of PS1 to 5V. Step 10: Voltmeter V2 reads 5V E - LOAD PS1 V1 - + + - V2 I1 PS2 - + ISL92115.8/6.8EVAL1Z FIGURE 1. CONNECTION OF EQUIPMENT 2 AN1440.1 January 14, 2009 Application Note 1440 Board Design BAT R2 220k VIN U1 1 VIN C1 1µF, 25V R1 10k 2 3 VIN OUT GND ILIM NC VB 4 FAULT GND OUT 8 OUT ILIM 7 6 VB 5 C2 0.1µF, 25V R3 24.9k FAULT ISL9211 FIGURE 2. SCHEMATIC TABLE 1. ISL92115.8/6.8EVAL1Z BILL OF MATERIALS ITEM QTY REFERENCE 1 1 C1 1µF, 25V 1206 PANASONIC 2 1 C2 1µF 805 PANASONIC 3 1 R1 10k 603 PANASONIC 4 1 R2 220k 603 PANASONIC 5 1 R3 24.9k 603 PANASONIC 6 3 VIN, BAT, OUT Test point Test point_red 5010 7 1 ILIM Test point Test point_yellow 5014 7 5 GND Test point Test point_black 5011 18 1 U1 ISL9211 Battery Protection IC µTDFN 2x2 3 PART DESCRIPTION FOOTPRINT PART NUMBER VENDER KEYSTONE INTERSIL AN1440.1 January 14, 2009 Application Note 1440 PCB Layout ISL92115.8/6.8EVAL1Z FIGURE 1. SILK LAYER FIGURE 2. TOP LAYER 4 AN1440.1 January 14, 2009 Application Note 1440 PCB Layout (Continued) FIGURE 3. BOTTOM LAYER = Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com 5 AN1440.1 January 14, 2009