Click here to ask an associate for production status of specific part numbers. MAX20808 Evaluation Kit Evaluates: MAX20808 General Description Quick Start The MAX20808 evaluation kit (EV kit) is a reference Required Equipment platform designed for the evaluation of the MAX20808, a MAX20808 EV kit dual-output, compact, low-cost, fully integrated, highly 2.7V to 16V power supply with optional 3.3V external efficient, step-down DC-DC switching regulator IC. The IC power supply is in 21-pin, 3.5mm x 4.6mm, 0.5mm pitch, FC2QFN 0A to 8A load package. This EV kit can deliver up to 4A load per output. Digital voltmeters The two outputs can be connected as a single-output, Oscilloscope and probes dual-phase regulator that supports up to 8A load current. Refer to the MAX20808 IC data sheet for more information. The EV kit comprises a fully assembled and tested PCB Procedure implementation of the MAX20808. Jumper pins, test The EV kit is fully assembled and tested. The EV kit is points, and input/output connectors are included for flex- preset with the MAX20808 dual-output operation with 1V ibility and convenience in a wide range of applications. on rail 1 and 1.8V on rail 2. Follow the steps below to verify board operation. For dual-output operation: Benefits and Features 1. Connect a powered-off 2.7V to 16V input supply to J5 2.7V to 16V Input Voltage Range (positive terminal) and J8 (negative terminal). 0.5V to 5.8V Output Voltage Range Optionally, connect supply sense leads to TP5 (positive High Efficiency and Power Density sense) and TP6 (negative sense) for best accuracy. If Low Component Count external bias is preferred, connect a powered-off 3.3V Dual-Output or Single-Output Dual-Phase Operation power supply to J32 (positive terminal) and J33 Optimized Performance (negative terminal) with jumper J34 installed. Proven PCB Layout 2. Connect the load to edge connector J12 for rail 1 or J13 Fully Assembled and Tested for rail 2 (positive on top and negative on bottom). 3. Connect the VOUT scope probe/voltmeter to J2 for rail 1 or J3 for rail 2. Ordering Information appears at end of data sheet. 4. Turn on the power supply. 5. Position the SW1 or SW2 toggle switch to enable the IC. 6. Observe that VOUT1 = 1V and VOUT2 = 1.8V. 7. For efficiency measurements, TP5 and TP6 are used to measure VIN J2 and J3 are used to measure VOUT1 and VOUT2. For dual-phase operation: 1. When configured to dual-phase operation, only the control loop for rail 1 works and the control loop for rail 2 is bypassed. The EN1 and PGOOD1 are used in dual-phase operation mode to enable the device and indicate power good status. The EN2 and PGOOD2 can be disconnected. 2. Install 0ohm resistor for R2, R44, R45, and R48 to short two rail outputs. 3. Remove R13 for rail 2 to disconnect the sense line and install 0ohm in R34 to pull SNSP2 to AVDD. 4. Use the same inductors for L1 and L2. 5. Connect a powered-off 2.7V to 16V input supply to J5 (positive terminal) and J8 (negative terminal). Optionally, connect supply sense leads to TP5 319-100743 Rev 0 04/21 (positive sense) and TP6 (negative sense) for best 7. Connect the VOUT scope probe/voltmeter to J2 or J3. accuracy. If external bias is preferred, connect a 8. Turn on the power supply. powered-off 3.3V power supply to J32 (positive 9. Position the SW1 toggle switch to enable the IC. terminal) and J33 (negative terminal) with jumper J34 10. Observe that VOUT = 1V. installed. 11. For efficiency measurements, TP5 and TP6 are used 6. Connect the load to edge connector J12 (positive on to measure VIN J2 or J3 is used to measure VOUT. top and negative on bottom). EV Kit Photo Table 1. Jumper Connection Guide DEFAULT JUMPER FEATURE CONNECTION Installed for EN2 J10 INSTALLED Installed for PGOOD2 J11 INSTALLED Installed for external 3.3V input J34 INSTALLED Default options are bold.