Evaluates: MAX15066 19-5620 Rev 0 11/10 MAX15066 Evaluation Kit General Description Features The MAX15066 evaluation kit (EV kit) provides a proven S 4.5V to 16V Input Voltage Range design to evaluate the MAX15066 high-efficiency, 4A, S Fixed 500kHz Switching Frequency step-down regulator with integrated switches. The EV kit S Adjustable Output Voltage Range from 0.606V to is preset for 1.8V output at load currents up to 4A from a (0.9 x V ) IN 4.5V to 16V input supply. S Proven PCB Layout S Fully Assembled and Tested Ordering Information PART TYPE MAX15066EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 2.7nF Q10%, 50V X7R ceramic 47FF Q20%, 25V aluminum C13 1 capacitor (0603) electrolytic capacitor C1 1 Murata GRM188R71H272K (6.3mm x 5.8mm) Panasonic EEEFK1E470P 47pF Q5%, 50V C0G ceramic C15 1 capacitor (0603) 10FF Q10%, 25V X5R ceramic Murata GRM1885C1H470J C2 1 capacitor (1206) Murata GRM31CR61E106K 2-pin header EN 1 Sullins PEC36SAAN 0.1FF Q10%, 25V X7R ceramic C3 1 capacitor (0603) 2.2FH, 15A inductor L1 1 Murata GRM188R71E104K TOKO FDA1055-2R2M R2, R6, R8 3 10kI Q1% resistors (0603) 1FF Q10%, 16V X7R ceramic C4 1 capacitor (0603) R4 0 Not installed, resistor (0603) Murata GRM188R71C105K R5 1 20kI Q1% resistor (0603) R7 1 5.11kI Q1% resistor (0603) 0.01FF Q10%, 25V X7R ceramic R10 1 1I Q1% resistor (0603) C7, C8 2 capacitors (0603) Murata GRM188R71E103K Synchronous 4A buck converter U1 1 (16 WLP) 47FF Q10%, 10V X5R ceramic Maxim MAX15066EWE+ C9 1 capacitor (1210) Murata GRM32ER61A476K 1 Shunt Not installed, ceramic capacitor PCB: MAX15066 EVALUATION C11 0 1 (1210) KIT+ Not installed, ceramic capacitors C12, C14 0 (0603) Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX15066 Evaluation Kit Component suppliers SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Sullins Electronics Corp. 760-744-0125 www.sullinselectronics.com TOKO America, Inc. 847-297-0070 www.tokoam.com Note: Indicate that you are using the MAX15066 when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX15066 EV kit evaluates the MAX15066 Recommended Equipment current-mode, synchronous, DC-DC buck converter. The MAX15066 EV kit EV kit is preset for 1.8V and delivers an output current 12V, 4A DC power supply up to 4A with high efficiency. The EV kit operates from Load capable of 4A an input voltage of 4.5V to 16V. The EV kit provides an adjustable output voltage from 0.606V to 90% of the Digital voltmeter input voltage through resistor-dividers R5 and R6. The Procedure EV kit features independent device-enable control (EN) The EV kit is fully assembled and tested. Follow the steps and power-good (PGOOD) signals that allow for flexible below to verify board operation. Caution: Do not turn power sequencing. on power supply until all connections are completed. Soft-Start (SS) 1) Connect the positive terminal of the 12V supply to The EV kit utilizes an adjustable soft-start function to the IN connector and the negative terminal to the limit inrush current during startup. The soft-start time is nearest GND connector. adjusted by the value of C7, the external capacitor from 2) Connect the positive terminal of the 4A load to the SS to GND. By default, C7 is currently 0.01F, which VOUT connector and the negative terminal to the gives a soft-start time of approximately 1.2ms. To adjust nearest GND connector. the soft-start time, determine C7 using the following formula: 3) Connect the digital voltmeter across the VOUT connector and the nearest GND connector. C7 = (5A x t )/0.606V SS 4) Verify that a shunt is not installed on the EN jumper. where t is the required soft-start time in seconds and SS C7 is in farads. 5) Turn on the DC power supply. 6) Enable the load. 7) Verify that the voltmeter displays 1.8V. 2 Evaluates: MAX15066