Analog Devices Inc./Maxim Integrated MAX20808EVKIT#

Overview

MAX20808EVKIT# from Analog Devices is a fully assembled and tested evaluation kit designed to validate the MAX20808/MAX20808T dual-output 4A step-down DC-DC switching regulators in real-world power delivery applications. It supports both independent dual-output operation (1V/1.8V default) and single-output dual-phase mode (up to 8A), features 2.7V–16V input range, programmable 1MHz/2MHz switching frequencies, and includes jumper-configurable enable, power-good, and external bias options.

For engineers reviewing the MAX20808EVKIT# datasheet, MAX20808EVKIT# pinout, MAX20808EVKIT# application, or MAX20808EVKIT# equivalent, this kit enables rapid validation of high-density, high-efficiency buck regulation for FPGA, ASIC, and multi-rail processor core supplies - with proven PCB layout, test points for efficiency/Bode analysis, and flexible rail configuration via jumpers and resistors.

Technical Context

The MAX20808EVKIT# implements the MAX20808AFH+/MAX20808TAFH+ IC in FC2QFN-21 package, supporting two distinct operating modes: independent dual-output (rail 1 and rail 2 each deliver up to 4A) or single-output dual-phase (rail 1 only active, combined 8A capability). Mode selection requires hardware reconfiguration including 0Ω resistor placement (R2/R44/R45/R48), removal of R13, and SNSP2 routing to AVDD.

It provides full signal access via dedicated test points: TP3/TP9 for LX1/LX2 switching waveforms, TP4/TP7 for VDDH/GND monitoring, TP5/TP6 for precision VIN measurement during efficiency testing, and TP13/TP14 + TP28/TP16 for Bode plot injection on both outputs using integrated 10Ω sense resistors.

Key Specifications

Availability

MAX20808EVKIT# is available at Aetrix Electronics and suitable for FPGA power sequencing, multi-core SoC evaluation, and high-density point-of-load (POL) design validation requiring stable component supply and fast time-to-test.

Supply support for MAX20808EVKIT# includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets since 1965.

The MAX20808 product line delivers compact, high-efficiency dual-output buck regulators targeting space-constrained, thermally sensitive applications such as AI accelerators, telecom infrastructure, and portable instrumentation.

FAQ

What is the primary function of the MAX20808EVKIT#?

The MAX20808EVKIT# is a reference evaluation platform for the MAX20808/MAX20808T dual-output buck regulators. It enables engineers to verify electrical performance, thermal behavior, and system-level integration of these ICs - including dual-rail operation (up to 4A per rail) and dual-phase mode (up to 8A) - using a fully assembled PCB with accessible test points, configurable jumpers, and documented setup procedures.

Can the MAX20808EVKIT# evaluate both MAX20808 and MAX20808T variants?

Yes, the MAX20808EVKIT# is explicitly designed to evaluate both the MAX20808 and MAX20808T ICs. The board accommodates either device in the same FC2QFN-21 footprint, and all documentation, jumper settings, and test procedures apply identically to both parts - with no hardware or firmware differences required for evaluation.

How do I configure the MAX20808EVKIT# for dual-phase operation?

To configure the MAX20808EVKIT# for dual-phase operation, install 0Ω resistors at R2, R44, R45, and R48 to parallel the outputs; remove R13 to disconnect rail 2's sense line; install a 0Ω resistor at R34 to tie SNSP2 to AVDD; and use identical inductors (L1 = L2). Only EN1 and PGOOD1 remain active - EN2 and PGOOD2 are disconnected per the MAX20808 EV kit guide.

What test points on the MAX20808EVKIT# support Bode plot measurement?

The MAX20808EVKIT# supports Bode plot measurement on both outputs using dedicated 10Ω sense resistors. For rail 1: TP13 (input side) and TP14 (output side) straddle the resistor. For rail 2: TP28 (input side) and TP16 (output side) provide the same injection and response access - enabling stability analysis without soldering or probe loading interference.

Does the MAX20808EVKIT# include external bias support?

Yes, the MAX20808EVKIT# includes optional 3.3V external bias support via connector J32/J33. When jumper J34 is installed, the board accepts an external 3.3V supply to power internal circuitry independently of the main 2.7V–16V input - improving measurement accuracy and enabling bias-sensitive characterization under varied input conditions.