Click here to ask an associate for production status of specific part numbers. Evaluates: MAX20499C/MAX20499D MAX20499C Evaluation Kit General Description Quick Start The MAX20499C EV kit is a fully assembled and tested Required Equipment PCB intended to demonstrate the capability of the MAX20499C EV kit MAX20499C step-down (buck) voltage regulator. The 8V, 20A power supply MAX20499C has an output current rating of 16A. The IC operates at 3V to 5.5V input supply voltage and can Load resistor or an electronic load regulate to a voltage range of 0.5V to 1.275V. Voltmeters The MAX20499C features a 2.2MHz fixed-frequency Ammeter pulse-width modulation (PWM) mode for better noise immunity and load transient response. The 2.2MHz fre- Procedure quency operation allows for the use of all ceramic capaci- The EV kit comes fully assembled and tested. Follow the tors and minimizes external components. The spread- steps below to verify board operation: spectrum frequency modulation option minimizes elec- 1) Connect a 5V power supply to PV (TP1) and GND tromagnetic emissions. Integrated low R switches DS(ON) (TP2). Enable the supply. improve efficiency at heavy loads and simplifies layout. 2) Place jumper (J5) between EN and PV to enable The MAX20499C is offered with factory-preset output the IC. 2 voltage. The I C interface supports dynamic voltage 3) Measure the output voltage at the sense point (J10). adjustment with programmable slew rates. Other features include programmable soft-start, over-current protection, 4) Connect load between banana sockets TP3 (VOUT) and over-temperature protection. and TP4 (GND). The MAX20499D can be evaluated by replacing the 5) Verify that the output voltage at the sense point (J10) installed IC (U1). remains within specification. 6) Verify that RESETB (J8) is at logic-high level. Benefits and Features High Efficiency DC-DC Converter Up to 16A Peak Output Current Differential Remote Voltage Sensing Ordering Information appears at end of data sheet. 3V to 5.5V Input Supply Voltage 2 I C User Configurable Excellent Load Transient Performance 2.2MHz or 1.1MHz Operation Test Points for Bode Plot Measurement Proven PCB Layout Fully Assembled and Tested 319-100573 Rev 2 9/21 2021 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. One Analog Way, Wilmington, MA 01887 U.S.A. Tel: 781.329.4700 2021 Analog Devices, Inc. All rights reserved.MAX20499C Evaluation Kit Evaluates: MAX20499C/ MAX20499D measurements, and J10 for measuring output voltage at Detailed Description of Hardware the sense point (a differential probe is recommended for EV Kit Interface ripple and transient measurements). The banana sockets TP1 (PV) and TP2 (GND) are the 2 I C Interface main input power supply points on the board. Connect a 2 The MAX20499C EV kit is designed to be used with an I C 5V power supply across these connectors. Use J32 (PV) interface, such as the MINIQUSB or MAXPICO2MINIQ as a test point for monitoring the input power supply. The board, and a PC software that can read and write to the banana sockets TP3 (VOUT) and TP4 (GND) serve as outputs to an external load. The MAX20499C is enabled by device, for example: SimpleI2C. a jumper placed across the EN and PV pins on jumper J5. Frequency Adjustment with External SYNC The enable signal (EN) can be monitored at test point J2, J4 allows an external synchronization pulse to be applied and the RESET signal (RESETB) is monitored at test point to the devices SYNC pin to set the switching frequency. 2 J8. The 20-pin connector J1 is a socket for an optional I C 2 Use 50% duty cycle for the square wave and follow the interface board (not included). The I C SDA and SCL sig- SYNC input frequency guideline in the MAX20499C IC nals are monitored at test points J6 (SDA) and J7 (SCL). data sheet. Use test points J27 (Bode+) and J28 (Bode-) for bode plot MAX20499C EV Kit Jumpers, Test Points, and Connectors JUMPER SIGNAL DEFAULT POSITION FUNCTION 2 J1 NA NA Connector for optional I C communication module J2 EN NA Test point for device enable (EN) signal J3 SYNC NA Test point for external synchronization (SYNC) signal J4 SYNC NA Connection point for applying an external synchronization signal J5 EN OFF Jumper for device enable (EN) signal 2 J6 SDA NA Test point for I C SDA signal 2 J7 SCL NA Test point for I C SCL signal J8 RESETB NA Test point for RESET (RESETB) J9 VOUT NA Test point for output voltage J10 RS+ NA Test point for output sense point J12 VOUT NA Test point for output voltage J13 GND NA Ground J18 VDD NA VDD to PV connector (Not required for MINIQUSB) J22 GND NA Ground GND GND NA Ground J26 LX NA Test point for LX signal with R-C filter J27 Bode+ NA Test point for bode plot measurement J28 Bode- NA Test point for bode plot measurement J29 GND NA Ground J30 Plugin socket NA Socket for optional load transient board (MAXLDBD) J31 GND NA Ground J32 PV NA Test point for input voltage during efficiency measurement Ordering Information PART CONTENTS MAX20499CEVKIT EV Kit Denotes RoHS compliant. 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