Application Note 1472 ISL97516IUZEVALZ Evaluation Board Application Manual Description Quick Setup Guide The ISL97516IUZEVALZ evaluation board is an evaluation kit for evaluating the ISL97516, a step-up voltage regulator that operates with high frequency and high efficiency. This evaluation kit is designed to deliver over 90% efficiency. 1. Connect power supply between headers of VIN and GND. The positive output of the power supply should be connected to VIN header. Set power supply voltage between 2.3V and 5V, and current limit at 3A. The ISL97516IUZEVALZ kit provides a dip switch that allows users to select either 620kHz or 1.2MHz switching frequency. 2. Connect E-load between headers of VOUT and GND. The positive input of the E-load should be connected to VOUT header. Set E-load current. The load current should not exceed the maximum output current the part can supply. Key Features • A Complete evaluation platform for ISL97516 evaluation • Input voltage: 2.3V to 5.5V 4. Close pins 2 and 3 of S1 to tie EN pin to VIN to enable the part. To disable the part, open pins 2 and 3 to pull EN to ground with R3 to disable the part. • Proven evaluation board layout • Pb-free (RoHS compliant) What is Needed The following instruments will be needed to perform testing: • Power supplies Make sure all the connections on the evaluation board are correct, then turn on power supply and E-load. The part starts to operate. Maximum Output Current • DC electronic load The MOSFET current limit is normally 2.0A and guaranteed 1.7A. This restricts the maximum output current that the ISL97516 can drive. Table 1 shows the ISL97516EVAL1Z maximum output current, IOMAX in different input and output voltages. • Multimeters • Oscilloscope • Cables and wires Pin Configuration TABLE 1. TYPICAL MAXIMUM IOUT VALUES ISL97516 (8 LD ΜSOP) TOP VIEW COMP 1 8 SS VIN (V) VOUT (V) IOMAX (mA) 2.5 5 870 2.5 9 500 FB 2 7 FSEL 2.5 12 380 EN 3 6 VDD 3.3 5 1150 5 LX 3.3 9 655 3.3 12 500 5 9 990 5 12 750 GND 4 Ordering Information PART NUMBER DESCRIPTION ISL97516IUZEVALZ Evaluation Board for ISL97516 October 17, 2012 AN1472.1 3. Close pins 1 and 4 of S1 to tie FSEL pin to VIN. This will set the switching frequency to 1.2MHz. Open pins 1 and 4 to pull FSEL to ground with R4 to set 620kHz. 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2009, 2012. All Rights Reserved. Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. Application Note 1472 Board Design Schematic R4 10k S1 1 2 4 3 R5 10k 4700pF C6 1k R3 ISL97516 1 2 10k R2 3 R1 85.2k 4 SW DIP-2 C4 COMP SS FSEL FB EN VDD LX GND VOUT (12V) 8 27nF 7 C2 0.1µF 6 C1 22µF VIN (2.3V TO 5.5V) 1 5 CON1 D1 L1 1 10µH C3 22µF CON1 SS25 GND IN 1 CON1 FIGURE 1. SCHEMATIC TABLE 2. ISL97516IUZEVALZ BILL OF MATERIALS (BOM) ITEM QTY REFERENCE PART DESCRIPTION PCB FOOTPRINT 1 1 C4 27nF 603 TDK 2 1 C6 4700pF 603 TDK 3 1 C2 0.1µF/16V 603 4 1 R1 85.2k 603 5 3 R2, R4, R5 10k 603 6 1 R3 1k 603 8 1 C3 22µF 1206 9 1 C1 22µF 1206 10 1 L1 10µH CDRH8D43-100NC 11 1 U1 ISL97516 MSOP-8 12 1 VOUT (12V) CON1 Powerpost 13 1 VIN (3.3V) CON1 Powerpost 14 1 GND IN CON1 Powerpost 15 1 D1 SS25 DO-214A 16 1 S1 SWDIP-2 DIP4 2 PART NUMBER C1068X7R1H104K VENDOR TDK WALSIN WR06W1002JTL WALSIN MURATA GRM31CR61C226KE15L MURATA CDRH8D43-100NC SUMIDA ISL97516 INTERSIL SS25 Fairchild CKN3001-ND AN1472.1 October 17, 2012 Application Note 1472 PCB Layout FIGURE 1. EVALUATION BOARD ASSEMBLY LAYER FIGURE 2. TOP LAYER 3 AN1472.1 October 17, 2012 Application Note 1472 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 4 AN1472.1 October 17, 2012