Evaluates: MAX15041 19-4949 Rev 0 9/09 MAX15041 Evaluation Kit General Description Features The MAX15041 evaluation kit (EV kit) is a fully assembled S 4.5V to 28V Input-Voltage Range and tested circuit board that evaluates the MAX15041 S 3.3V at 3A Output synchronous buck converter IC with integrated high-side S Fixed 350kHz Switching Frequency and low-side switches. The EV kit output is configured S Evaluates Internal 170mI R High-Side and to 3.3V and delivers up to 3A output current. The EV kit DS-ON circuit operates at the MAX15041 internally set 350kHz 105mI R Low-Side Power Switches DS-ON switching frequency and features PCB pads to monitor S High Efficiency Up to 93% the IC power-good output signal (PGOOD) and to enable S Enable Input (EN) the circuit. S Power-Good Output (PGOOD) The MAX15041 EV kit requires a 4.5V to 28V power S Overcurrent and Thermal-Shutdown Protection supply that provides up to 3A for normal operation. S Fully Assembled and Tested Ordering Information PART TYPE MAX15041EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Not installed, ceramic capacitor C10 0 47FF Q20%, 35V electrolytic ceram- (0603) C1 1 ic capacitor (6.3mm x 5.8mm) 150mA, 75V diode (SOD323) Panasonic EEEFK1V470P D1 1 Diodes, Inc. 1N4148WS-7-F (Top Mark: T4 or T6) 1FF Q10%, 16V X5R ceramic C2 1 capacitor (0603) JU1 1 3-pin header Murata GRM188R61C105K 4.7FH, 6.4A inductor L1 1 Sumida CDRH105RNP-4R7N 0.1FF Q10%, 50V X7R ceramic C3 1 R1, R2, R6 3 capacitor (0603) 10kI Q1% resistors (0603) Murata GRM188R71H104K R3 1 1.8kI Q1% resistor (0603) R5 1 45.3kI Q1% resistor (0603) 0.01FF Q10%, 50V X7R ceramic C4, C7 2 capacitors (0603) R7 0 Not installed, resistor (0603) Murata GRM188R71H103K R8 1 47I Q5% resistor (0603) 22FF Q10%, 6.3V X5R ceramic Internal switch buck converter C5 1 capacitor (1206) (16 TQFN-EP*) U1 1 Murata GRM31CR60J226K Maxim MAX15041ETE+ (Top Mark: AGV) Not installed, ceramic capacitor C6 0 (1206) 1 Shunt (JU1) 1 PCB: MAX15041 EVALUATION KIT+ 100pF Q5%, 50V C0G ceramic C8 1 capacitor (0603) *EP = Exposed pad. Murata GRM1885CIH101J 12000pF Q10%, 16V X7R ceramic C9 1 capacitor (0603) Murata GRM188R71C123K 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.MAX15041 Evaluation Kit Component Suppliers SUPPLIER PHONE WEBSITE Diodes, Inc. 805-446-4800 www.diodes.com Murata North America Electronics, Inc. 770-436-1300 www.murata-northamerica.com Panasonic Corp. 800-344-2112 www.panasonic.com Sumida Corp. 847-545-6700 www.sumida.com Note: Indicate that you are using the MAX15041 when contacting these component suppliers. Quick Start Detailed Description of Hardware The MAX15041 EV kit circuit uses a MAX15041 step- Required Equipment down converter IC to implement a step-down DC-DC 28V adjustable, 3A power supply converter circuit. The MAX15041 IC is available in a E l e c t r o n i c l o a d c a p a b l e o f s i n k i n g u p t o 3 A 16-pin TQFN surface-mount package and features a (e.g., HP 6060B) fixed 350kHz switching frequency and internal low Two digital voltmeters (DVMs) R MOSFETs to achieve high efficiency and lower DS-ON overall system cost. The MAX15041 EV kit operates over Procedure a wide input-voltage range of 4.5V to 28V. The MAX15041 EV kit is fully assembled and test- The MAX15041 EV kit is configured to 3.3V using resis- ed. Follow the steps below to verify board operation. tors R5 and R6 and delivers up to 3A of output current. Caution: Do not turn on the power supply until all The EV kit circuit soft-start startup time is set to 1.2ms connections are completed. using capacitor C7. The EV kit also provides a PGOOD 1) Verify that a shunt is installed across pins 1-2 of PCB pad to monitor the IC power-good output signal jumper JU1. (EV kit enabled) and an EN PCB pad to enable/disable the EV kit VOUT 2) Connect the power-supply positive and ground output. terminals to the VIN and PGND PCB pads, respec- Input Power Source tively. The MAX15041 EV kit VOUT output is optimized to 3) Connect the positive and negative terminal of the provide up to 3A when operating with an input-voltage electronic load to the VOUT and PGND PCB pads, source of 4.5V to 28V applied at the VIN and PGND pads. respectively. Refer to the TOC 19, 20, and 21 curves in the Typical 4) Connect a DVM across the VOUT and PGND PCB Operating Characterisitc section in the MAX15041 IC pads. data sheet for current deration for different EV kit VIN inputs and VOUT outputs . 5) Connect a DVM across the PGOOD and SGND PCB pads. Configuring the Output Voltage (VOUT) 6) Turn on the power supply. The MAX15041 EV kit step-down converter output volt- age is configured to 3.3V by resistors R5 and R6. The EV 7) Set the power-supply voltage to 12V. kits output voltage (VOUT) can be reconfigured in the 8) Enable the 3A electronic load. 0.606V to 0.9 x VIN range by replacing resistors R5 and 9) Verify that the voltmeter connected to VOUT R6. Use the following equation to reconfigure the output measures 3.3V. voltage to the desired value: 10) Verify that the voltmeter connected to PGOOD mea- sures approximately 5V. VOUT R5 = R6 1 0.606 where V is the desired output voltage, R6 is 10kI OUT (typ), and R5 is in kilohms. 2 Evaluates: MAX15041