MAX20010EVKIT#

MAX20010 Evaluation Kit Evaluates: MAX20010C, MAX20010D General Description Procedure The MAX20010 evaluation kit (EV kit) demonstrates the MAX20010 automotive single 6A step-down converter. The EV kit operates over an input range of 3V to 5.5V, with the output set for 1V and up to 6A load. Features ● Differential Remote-Voltage Sensing ● 3V to 5.5V Input Supply Range ● I2C-Controlled 0.5V to 1.5875V Output Voltage Range ● 2.2MHz Operation ● ±2% Output-Voltage Accuracy ● Power-Good Output ● Current-Mode, Forced-PWM, and Skip Operation ● Proven PCB Layout ● Fully Assembled and Tested Quick Start Recommended Equipment ● MAX20010 EV kit ● 6V, 3A DC power supply ● Electronic load capable of 6A ● Digital voltmeter (DVM) Ordering Information appears at end of data sheet. 19-7588; Rev 4; 5/19 The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on supplies until all connections are completed. 1) Set the power supply to 5V. Disable the power supply. 2) Verify that jumper JU2 has a shunt across pins 1-2 and jumpers JU1 and JU3 are open. 3) Connect the power supply between the PVDD and nearest PGND test points. 4) Connect the electronic load between the SD0 and nearest PGND test points. 5) Connect the DVM between the SD0 and nearest PGND test points. 6) Turn on the power supply. 7) Enable the electronic load. 8) Verify that the voltage at the SDO output pad is approximately 1V. Disable the power supply. Detailed Description of Hardware Enable (EN) Place a shunt across pins 1-2 on jumper JU2 for normal operation. To place the device into shutdown mode, place the shunt across pins 2-3 on JU2. See Table 1 for jumper settings. Table 1. EN Configuration (JU1) SHUNT POSITION DESCRIPTION Pins 1-2* Connects the EN pin to the voltage at PVDD for normal operation Pins 2-3 Connects the EN pin to ground to enter shutdown mode *Default position. MAX20010 Evaluation Kit Synchronization Input/Output (SYNC) The EV kit features a SYNC connection that allows for synchronization input or output. The function is set by the SO[1:0] bit, as defined in the MAX20010C/MAX20010D IC data sheet. Jumper JU3 connects a pullup resistor to PVDD. See Table 2 for bit description. Evaluates: MAX20010C, MAX20010D Table 2. SYNC Settings BIT BIT DESCRIPTION SO[1:0] I2C Slave Address (ADDR) The EV kit provides jumper JU1 to set the ADDR register. Pulldown resistor R4 is used to set ADDR = 0. If ADDR = 1 is desired, then set a shunt across pins 1-2 on jumper JU1. Refer to Table 1 in the MAX20010C/MAX20010D IC data sheet for more details on I2C slave address. Power-Good Output (PGOOD) The EV kit provides a PGOOD test point to monitor the status of the device output. PGOOD asserts low when VSDO exceeds the PG_OV and PG_UV thresholds. PG_is deasserted after a UV/OV propagation delay if the output voltage is outside the PG_UV/OV thresholds. SYNC I/O Select 00 – Master: Input, rising edge starts cycle 01 – Master: Input, falling edge starts cycle 10 – Master: Output, falling edge starts cycle 11 – Unused Output Voltage Output voltage is adjustable by changing the VID registers. Refer to Table 9 in the MAX20010C/MAX20010D IC data sheet. When increasing the output voltage, be aware of the preset maximum allowed voltage. The maximum can be adjusted with the VIDMAX register. Refer to Table 4 in the MAX20010C/MAX20010D IC data sheet. PCB Layout Recommendations Careful PCB layout is critical to performance. Place the 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 C1–C3 3 C4 C5 C6 C7 C8 DESCRIPTION 47μF ±10%, 6.3V X7R ceramic capacitors (1210) Murata GCM32ER70J476K 0 Not installed, ceramic capacitors 1 10μF ±10%, 16V X7R ceramic capacitor (1206) TDK C3216X7R1C106K 1 4.7μF ±10%, 16V X7R ceramic capacitor (0805) Murata GCM21BR71C475K 1 1 68μF ±20%, 10V, aluminum electrolytic capacitor Murata ECASD61A686M015K00 1μF ±10%, 50V X7R ceramic capacitor (0805) TDK C2012X7R1H105K J1 1 20-pin (2 x 10) right-angle receptacle, 0.1in JU1, JU2 2 3-pin headers, 2.54mm JU3 1 2-pin header, 2.54mm www.maximintegrated.com DESIGNATION QTY DESCRIPTION L1 1 0.22μH inductor Coilcraft XAL4020-221ME R1 1 0Ω ±1% resistor (0402) R2 1 100Ω ±1% resistor (0402) R3, R6–R9 5 1kΩ ±1% resistors (0402) R4 1 100kΩ ±1% resistor (0402) R5 1 10kΩ ±5% resistor (0402) R10 1 100Ω ±5% resistor (0402) U1 1 Automotive step-down converter (20 TQFN-EP*) Maxim MAX20010DATPN/V+ — 1 0.25in U-shaped wire loop, 20G plated solid copper — 1 Shunts — 1 PCB: MAX20010 EVALUATION KIT *EP = Exposed pad. /V denotes an automotive qualified part Maxim Integrated │  2 PGND SD0 C4 OPEN 2 4 6 8 10 12 14 16 18 20 J1 1 3 5 7 9 11 13 15 17 19 C3 OPEN C2 47μF R6 1kΩ VDDL PGND PGND PVDD SDA SDA C1 47μF C7 68μF R7 1kΩ C6 4.7μF SCL SCL RS+ RS- LX SDA R1 0Ω R2 100Ω C5 10μF 9 8 11 10 5 6 7 1 2 3 4 18 19 20 SCL SDA RS+ RS- PGND PGND PGND LX LX LX LX PV PV PV EP MAX20010 SYNC EN ADDR PG GND 14 13 17 12 15 AV 16 SYNC R8 1kΩ R5 10kΩ R4 100kΩ PG PGND PV 2 4 6 8 10 J2 1 2 JU2 3 PVDD PVDD 1 2 JU1 3 VDDL R10 100Ω EN R3 1kΩ C8 1μF ADDR ADDR U1 SCL SDA PVDD PV SYNC PG 1 3 5 7 9 SYNC JU3 R9 1kΩ PVDD EN PG www.maximintegrated.com PVDD MAX20010 Evaluation Kit Evaluates: MAX20010C, MAX20010D Figure 1. MAX20010 EV Kit Schematic Maxim Integrated │  3 MAX20010 Evaluation Kit Evaluates: MAX20010C, MAX20010D Figure 2. MAX20010 EV Kit Component Placement Guide—Component Side Figure 3. MAX20010 EV Kit PCB Layout—Component Side Figure 4. MAX20010 EV Kit PCB Layout—Layer 2 www.maximintegrated.com Maxim Integrated │  4 Evaluates: MAX20010C, MAX20010D MAX20010 Evaluation Kit Figure 5. MAX20010 EV Kit PCB Layout—Layer 3 Figure 6. MAX20010 EV Kit PCB Layout—Solder Side Ordering Information PART MAX20010EVKIT# TYPE EV Kit #Denotes RoHS compliant. www.maximintegrated.com Maxim Integrated │  5 MAX20010 Evaluation Kit Evaluates: MAX20010C, MAX20010D Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 4/15 Initial release — 1 6/15 Updated Figure 1 3 2 11/17 Updated the Component List (C1, C2, C3, C4, and U1) 2 3 3/19 Updated references to MAX20010 to indicate that EV kit evaluates MAX20010C and MAX20010D 4 5/19 Updated General Description and Quick Start DESCRIPTION 1–5 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2017 Maxim Integrated Products, Inc. │  6