MAX15062B Evaluation Kit Evaluates: MAX15062B General Description Features The MAX15062B evaluation kit (EV kit) is a fully assem- 6.5V to 60V Input Voltage Range bled and tested circuit board that demonstrates the 5V Output, 300mA Continu ous Current performance of the MAX15062B 60V, 300mA ultra-small, Internal Compensation high-efficiency, synchronous step-down converter. The EN / UVLO for On / Off Control and Programmable EV kit operates over a wide 6.5V to 60V input voltage Input Undervoltage Lockout range, and provides up to 300mA at the preset 5V output. The device features undervoltage lockout, overcurrent 92% Peak Efficiency protection, and thermal shutdown. The EV kit switches 500kHz Fixed-Frequency PWM Operation at a fixed frequency of 500kHz, and delivers a peak PFM or Forced-PWM Mode of Operation efficiency of 92% with the supplied components. Hiccup Mode Overcurrent Protection The EV kit comes installed with the MAX15062BATA+ in an 8-pin (2mm x 2mm) lead(Pb)-free/RoHS-compliant Open-Drain RESET Output TDFN package. Thermal Shutdown Proven PCB Layout Fully Assembled and Tested Ordering Information appears at end of data sheet. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 22F, 100V electrolytic capacitor 47H, 560mA inductor L1 1 C1 1 (8mm x 10.2mm) Coilcraft, Inc. LPS4018-473ML Panasonic EEEHA2A220UP R1 1 3.32M 1% resistor (0402) 1F 10%, 100V X7R ceramic R2 1 768k 1% resistor (0402) C2 1 capacitor (1206) R3 1 100k 1% resistor (0402) Murata GRM31CR72A105KA 60V, 300mA, ultra-small, high- 1F 10%, 6.3V X7R ceramic efficiency, synchronous step- C3 1 capacitor (0603) U1 1 down DC-DC converter (8 TDFN) Murata GRM188R70J105K Maxim MAX15062BATA+ 10F 10%, 6.3V X7R ceramic 3 Shunts C4 1 capacitor (1206) Murata GRM31CR70J106K PCB: MAX15062B EVALUATION 1 KIT JU1JU3 3 2-pin headers 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 Panasonic Corp. 800-344-2112 www.panasonic.com Note: Indicate that you are using the MAX15062B when contacting these component suppliers. 19-6638 Rev 0 4/13MAX15062B Evaluation Kit Evaluates: MAX15062B Quick Start Detailed Description The MAX15062B evaluation kit (EV kit) is a fully assem- Recommended Equipment bled and tested circuit board that demonstrates the per- MAX15062B EV kit formance of the MAX15062B 60V, 300mA ultra-small, 60V adjustable, 0.5A DC power supply high-efficiency, synchronous step-down converter. The EV kit operates over a wide 6.5V to 60V input voltage Electronic load up to 300mA range, and provides up to 300mA at the preset 5V output. Voltmeter The device features undervoltage lockout, overcurrent Procedure protection, and thermal shutdown. The EV kit switches at a fixed frequency of 500kHz, and delivers a peak The EV kit is fully assembled and tested. Follow the steps efficiency of 92% with the supplied components. below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. The EV kit inclu des an EN/UVLO PCB pad and jumpers JU1 and JU2 to enable control of the converter output. 1) Verify that shunts are installed on jumpers JU1 and The MODE PCB pad and jumper JU3 are provided for JU2 (EN/UVLO). selecting the mode of operation of the converter. The 2) Verify that jumper JU3 (MODE PFM operation) is open. VCC PCB pad helps measure the internal LDO voltage. 3) Set the electronic load to constant-current mode, An additional RESET PCB pad is available for monitoring 300mA, and disable the electronic load. the open-drain logic output. 4) Conn ect the electronic loads positive terminal to the Enable Control (JU1, JU2) VOUT PCB pad. Connect the negative terminal to the The EN/UVLO pin of the device serves as an on/off GND PCB pad. control while also allowing the user to program the input 5) Conn ect the voltmeter across the VOUT and GND undervoltage lockout (UVLO) threshold. Jumpers JU1 PCB pads. and JU2 configure the EV kits output for turn-on/turn-off 6) Set the power-supply output to 24V. Disable the power control. Install a shunt across pins 1-2 on jumper JU2 to supply. disable VOUT. See Table 1 for proper jumper settings. 7) Conn ect the 24V power-sup ply output to the VIN PCB Additionally, resistors R1 and R2 are included to set the pad. Connect the supply groun d to the GND PCB pad. UVLO to a desired turn-on voltage. Refer to the Enable Input (EN/UVLO), Soft-Start section in the MAX15062A/ 8) Turn on the power supply and verify that VOUT is at MAX15062B IC data sheet for additional information on 5V with respect to GND. setting the UVLO threshold voltage. 9) Enable the electronic load and verify that VOUT is at 5V with respect to GND. Table 1. Enable Control (EN/UVLO) SHUNT POSITION EN/UVLO PIN VOUT OUTPUT JU1 JU2 1-2 Open Connected to VIN Enabled Open 1-2 Connected to GND Disabled Connected to midpoint of the 1-2* 1-2 Enabled at VIN 6.5V R1, R2 resistor-divider *Default position. Maxim Integrated 2 www.maximintegrated.com