Evaluates: MAX15026B 19-4181 Rev 0 6/08 MAX15026B Evaluation Kit General Description Features 5V to 16V Input Range The MAX15026B evaluation kit (EV kit) is a fully assem- bled and tested PCB that contains all the components Optional 4.5V to 5.5V Input Range for MAX15026B IC necessary to evaluate the performance of the 1.5V at 10A Output MAX15026B 10A synchronous step-down controller. 600kHz Switching Frequency The MAX15026B EV kit requires a 5V to 16V power sup- Enable Input ply that provides up to 4A for normal operation. The Power-Good Output MAX15026B EV kit output is configured to 1.5V and delivers up to 10A output current. The controller switch- Fully Assembled and Tested ing frequency is programmed to 600kHz. The Ordering Information MAX15026B EV kit includes PCB pads to enable the cir- cuit and to monitor the power-good output. PART TYPE MAX15026BEVKIT+ EV Kit +Denotes lead-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 68pF 5%, 50V C0G ceramic 330F 20%, 25V electrolytic C13 1 capacitor (0603) C1 1 capacitor (10mm x 10.2mm) Panasonic EEEFC1E331P Murata GRM1885C1H680J 4.7F 10%, 25V X5R ceramic 15pF 5%, 50V C0G ceramic C2 1 capacitor (0805) C14 1 capacitor (0603) Murata GRM1885CH150J Murata GRM21BR61E475K 1500pF 10%, 50V C0G ceramic 1F 10%, 25V X5R ceramic C15 1 capacitor (0603) C3 1 capacitor (0603) Murata GRM1885C1H152K Murata GRM188R61E105K 2200pF 5%, 50V C0G ceramic 4.7F 10%, 6.3V X5R ceramic C4 1 capacitor (0603) C16 1 capacitor (0603) Murata GRM1885C1H222J Murata GRM188R60J475K 2.2F 10%, 6.3V X5R ceramic Not installed, ceramic capacitor C17 0 C5 1 capacitor (0603) (0603) Murata GRM188R60J225K JU1 1 3-pin header 10F 10%, 25V X5R ceramic JU2 1 2-pin header capacitor (1206) C6 1 1.4H, 22A inductor Murata GRM31CR61E106K L1 1 Coilcraft MSS1278-142ML Not installed, ceramic capacitor C7 0 30V, 74A n-channel MOSFET (SO-8FL) (1206) N1 1 ON Semiconductor NTMFS4837NT1G 0.47F 10%, 16V X7R ceramic C8 1 capacitor (0603) 30V, 104A n-channel MOSFET (SO-8FL) N2 1 Murata GRM188R71C474K ON Semiconductor NTMFS4835NT1G 2700pF 5%, 50V C0G ceramic PGND (2), 4 Uninsulated banana jacks capacitor (0805) C9 1 VIN, VOUT Murata GRM2165C1H272JA TP1, TP2 2 PC mini red test points 470F 20%, 4V electrolytic R1, R6, R8 0 Not installed, resistors (0603) C10 1 capacitor (8mm x 10.5mm) SANYO 4CE470EX R2 1 200k 1% resistor (0603) 22F 10%, 6.3V X5R ceramic R3 1 10 5% resistor (0603) capacitors (1206) C11, C12 2 R4 1 51k 5% resistor (0603) Murata GRM31CR60J226K 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.MAX15026B Evaluation Kit Component List (continued) DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION R5 1 2.2 5% resistor (0603) R15 1 49.9 1% resistor (0805) R7 1 1 1% resistor (1210) 10A synchronous step-down controller (14 TDFN-EP*) R9 1 11.8k 1% resistor (0603) U1 1 Maxim MAX15026BETD+ R10 1 22.6k 1% resistor (0603) (Top Mark: +ADP) R11 1 5.9k 1% resistor (0603 2 Shunts (JU1, JU2) R12 1 15.4k 1% resistor (0603) 1 PCB: MAX15026B Evaluation Kit+ R13 1 10k 1% resistor (0603) *EP = Exposed pad. R14 1 27k 1% resistor (0603) Component Suppliers SUPPLIER PHONE WEBSITE Coilcraft, Inc. 847-639-6400 www.coilcraft.com Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com ON Semiconductor 602-244-6600 www.onsemi.com Panasonic Corp. 800-344-2112 www.panasonic.com SANYO Electric Co., Ltd. 619-661-6835 www.sanyodevice.com Note: Indicate that you are using the MAX15026B when contacting these component suppliers. 8) Enable the electronic load and set it to 10A. Quick Start 9) Verify that the voltmeters at VOUT and PGOOD are Required Equipment 1.5V and approx 5.2V, respectively. Before beginning, the following equipment is needed: Detailed Description of Hardware MAX15026B EV kit The MAX15026B EV kit is a fully assembled and tested Adjustable 5V to 16V, 4A DC power supply PCB that contains all the components necessary to Electronic load capable of sinking 10A evaluate the performance of the MAX15026B 10A syn- (e.g., HP6060B) chronous step-down controller. The circuit uses a Two voltmeters MAX15026B step-down controller IC to implement a step-down synchronous DC-DC converter circuit. The Procedure MAX15026B EV kit is designed to operate from a single The MAX15026B EV kit is fully assembled and tested. DC power supply that provides 5V to 16V and 4A of Follow the steps below to verify board operation. current. The MAX15026B controller can also be operat- Caution: Do not turn on the power supply until all ed using a separate 4.5V to 5.5V power source applied connections are completed. at the VCC and AGND PCB pads. When operating the 1) Install a shunt across pins 1-2 of jumper JU1 (VIN MAX15026B EV kit using separate power-supply input source for U1). sources at the VIN connector and VCC PCB pad, apply power at the VIN and PGND connectors first and then 2) Install a shunt at jumper JU2 (VOUT enabled). the VCC and AGND PCB pads. 3) Connect a voltmeter to the VOUT and PGND pads. The MAX15026B EV kit converter is configured to 1.5V 4) Connect a voltmeter to the PGOOD and AGND pads. and provides up to 10A output current. The switching 5) Connect a 10A electronic load to the VOUT and frequency is set to 600kHz using resistor R14. The EV PGND banana jack connectors. kit features PCB pads to evaluate the enable input sig- nal (EN) and to monitor the power-good (PGOOD) and 6) Connect a DC power supply to the VIN and PGND VCC output signals. banana jack connectors and set the voltage to 12V. 7) Enable the power supply. 2 Evaluates: MAX15026B