Evaluates: MAX20010C, MAX20010D MAX20010 Evaluation Kit Procedure General Description The EV kit is fully assembled and tested. Follow the steps The MAX20010 evaluation kit (EV kit) demonstrates below to verify board operation. Caution: Do not turn on the MAX20010 automotive single 6A step-down supplies until all connections are completed. converter. The EV kit operates over an input range of 3V to 5.5V, with the output set for 1V and up to 1) Set the power supply to 5V. Disable the power supply. 6A load. 2) Verify that jumper JU2 has a shunt across pins 1-2 and jumpers JU1 and JU3 are open. Features 3) Connect the power supply between the PVDD and Differential Remote-Voltage Sensing nearest PGND test points. 3V to 5.5V Input Supply Range 4) Connect the electronic load between the SD0 and 2 I C-Controlled 0.5V to 1.5875V Output Voltage nearest PGND test points. Range 5) Connect the DVM between the SD0 and nearest 2.2MHz Operation PGND test points. 2% Output-Voltage Accuracy 6) Turn on the power supply. Power-Good Output 7) Enable the electronic load. Current-Mode, Forced-PWM, and Skip Operation 8) Verify that the voltage at the SDO output pad is approximately 1V. Disable the power supply. Proven PCB Layout Fully Assembled and Tested Detailed Description of Hardware Quick Start Enable (EN) Place a shunt across pins 1-2 on jumper JU2 for normal Recommended Equipment operation. To place the device into shutdown mode, place MAX20010 EV kit the shunt across pins 2-3 on JU2. See Table 1 for jumper 6V, 3A DC power supply settings. Electronic load capable of 6A Table 1. EN Configuration (JU1) Digital voltmeter (DVM) SHUNT POSITION DESCRIPTION Connects the EN pin to the voltage Pins 1-2* at PVDD for normal operation Connects the EN pin to ground to Pins 2-3 enter shutdown mode Ordering Information appears at end of data sheet. *Default position. 19-7588 Rev 4 5/19Evaluates: MAX20010C, MAX20010D MAX20010 Evaluation Kit Table 2. SYNC Settings Synchronization Input/Output (SYNC) The EV kit features a SYNC connection that allows for BIT BIT DESCRIPTION synchronization input or output. The function is set by the SYNC I/O Select SO 1:0 bit, as defined in the MAX20010C/MAX20010D 00 Master: Input, rising edge starts cycle IC data sheet. Jumper JU3 connects a pullup resistor to SO 1:0 01 Master: Input, falling edge starts cycle PVDD. See Table 2 for bit description. 10 Master: Output, falling edge starts cycle 2 I C Slave Address (ADDR) 11 Unused The EV kit provides jumper JU1 to set the ADDR register. Output Voltage Pulldown resistor R4 is used to set ADDR = 0. If ADDR = Output voltage is adjustable by changing the VID regis- 1 is desired, then set a shunt across pins 1-2 on jumper ters. Refer to Table 9 in the MAX20010C/MAX20010D JU1. Refer to Table 1 in the MAX20010C/MAX20010D 2 IC data sheet. When increasing the output voltage, be IC data sheet for more details on I C slave address. aware of the preset maximum allowed voltage. The maxi- Power-Good Output (PGOOD) mum can be adjusted with the VIDMAX register. Refer to The EV kit provides a PGOOD test point to monitor the Table 4 in the MAX20010C/MAX20010D IC data sheet. status of the device output. PGOOD asserts low when PCB Layout Recommendations V exceeds the PG OV and PG UV thresholds. PG is SDO deasserted after a UV/OV propagation delay if the output Careful PCB layout is critical to performance. Place the voltage is outside the PG UV/OV thresholds. input capacitor (C5) next to the IC (see Figure 2). Route the sensing signals (RS ) away from the high-speed switching nodes. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 0.22H inductor 47F 10%, 6.3V X7R ceramic L1 1 Coilcraft XAL4020-221ME C1C3 3 capacitors (1210) Murata GCM32ER70J476K R1 1 0 1% resistor (0402) C4 0 Not installed, ceramic capacitors R2 1 100 1% resistor (0402) 10F 10%, 16V X7R ceramic R3, R6R9 5 1k 1% resistors (0402) C5 1 capacitor (1206) R4 1 100k 1% resistor (0402) TDK C3216X7R1C106K R5 1 10k 5% resistor (0402) 4.7F 10%, 16V X7R ceramic R10 1 100 5% resistor (0402) C6 1 capacitor (0805) Automotive step-down converter Murata GCM21BR71C475K U1 1 (20 TQFN-EP*) 68F 20%, 10V, aluminum Maxim MAX20010DATPN/V+ C7 1 electrolytic capacitor 0.25in U-shaped wire loop, 20G Murata ECASD61A686M015K00 1 plated solid copper 1F 10%, 50V X7R ceramic 1 Shunts C8 1 capacitor (0805) PCB: MAX20010 EVALUATION TDK C2012X7R1H105K 1 KIT 20-pin (2 x 10) right-angle J1 1 *EP = Exposed pad. receptacle, 0.1in /V denotes an automotive qualified part JU1, JU2 2 3-pin headers, 2.54mm JU3 1 2-pin header, 2.54mm Maxim Integrated 2 www.maximintegrated.com