Analog Devices Inc./Maxim Integrated MAX16425AEVKIT#

Overview

MAX16425AEVKIT# from Analog Devices is an evaluation kit designed to validate the MAX16425A high-efficiency, 25A synchronous step-down switching regulator IC in real-world power delivery applications. It supports 4.5V–16V input, delivers up to 25A at adjustable output voltages from 0.6V to 3.3V, and features programmable switching frequency (up to 1MHz), soft-start, and differential remote sensing - enabling rapid prototyping for server VRMs, AI accelerators, and FPGA core supplies.

For engineers reviewing the MAX16425AEVKIT# datasheet, MAX16425AEVKIT# pinout, MAX16425AEVKIT# application, or MAX16425AEVKIT# equivalent, this kit provides full hardware validation of the MAX16425A IC's transient response, efficiency (up to 97% peak), OCP programming, STAT reporting, and external VREF interface - with pre-assembled PCB, test points, jumpers, and input/output connectors for immediate bench testing.

Technical Context

The MAX16425AEVKIT# implements the MAX16425A IC in a fully assembled 27-bump WLCSP (2.2mm × 3.8mm) footprint, configured by default for 1V/25A operation at 780kHz switching frequency. It integrates on-board bias generation via U2 (MIC5235-1.8YM5 LDO) and status regulation via U3 (MIC5235-3.3YM5), with jumper-selectable OE/STAT pull-up, sense-line closure (J16), and scenario configuration (R_SEL/C_SEL).

Hardware-level flexibility includes differential remote sense with open-circuit detection, Quick-PWM™ architecture for fast transient response, analog current/temperature reporting, and percentage-based PWRGD/OVP - all validated through accessible test points (J8, J11, J13, J14) and banana-jack input (4.5V–16V) and edge-strip output interfaces.

Key Specifications

Availability

MAX16425AEVKIT# is available at Aetrix Electronics and suitable for power system validation, VRM qualification, FPGA/ASIC core supply design, and high-density board layout verification requiring stable component supply and documented reference performance.

Supply support for MAX16425AEVKIT# 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 precision instrumentation, industrial automation, communications, and power management markets.

The MAX16425/MAX16425A product line delivers compact, high-efficiency, fast-transient power solutions for low-output-voltage applications in datacenter, AI, and high-performance computing systems - emphasizing integration, configurability, and reliability under dynamic load conditions.

FAQ

What is the primary function of the MAX16425AEVKIT#?

The MAX16425AEVKIT# is a fully assembled evaluation kit that validates the electrical performance and configuration capabilities of the MAX16425A 25A synchronous step-down regulator IC. It enables engineers to measure efficiency, transient response, OCP behavior, and programmable features such as switching frequency, soft-start, and output voltage setting - without requiring custom PCB development.

Does the MAX16425AEVKIT# support both MAX16425 and MAX16425A ICs?

No - the MAX16425AEVKIT# is specifically configured and tested for the MAX16425A variant. While physically similar, the MAX16425A differs in its configuration tables (e.g., VREF options, OCP inception currents, reporting modes, and RSENSE gain), and the kit's default R_SEL (30.9kΩ) and C_SEL (820pF) values align with MAX16425A Table 1b, not MAX16425 Table 1a.

How is output voltage set on the MAX16425AEVKIT#?

The MAX16425AEVKIT# is preset to 1V output using internal VREF = 0.95V and a fixed resistive divider. Output voltage can be adjusted by changing R_FB1/R_FB2 per Equation 1 in the datasheet, selecting appropriate VREF via R_SEL (per MAX16425A Table 1b), and optionally using external VREF (0.8V–1.1V) with RC filter (RF = 2.2kΩ, CF = 0.22µF) at the SENSE− pin.

What power supply requirements are needed to operate the MAX16425AEVKIT#?

The MAX16425AEVKIT# requires a 4.5V–16V DC input source capable of delivering ≥25A peak current. For accurate efficiency measurement, use a lab supply with remote sense connections to VDD1/GND1 headers, and provide a separate 1.8V/0.1A bias supply to J12-2 when disabling the on-board LDO (U2). Banana jacks accept red (+) and black (GND) leads.

Can the MAX16425AEVKIT# be used to evaluate external voltage reference functionality?

Yes - the MAX16425AEVKIT# supports external VREF operation via the SENSE− pin. The schematic shows dedicated pads and routing; users must remove jumpers J4 and J12, connect an external 0.8V–1.1V reference with RC filter (RF = 2.2kΩ, CF = 0.22µF), and ensure the filtered voltage settles within the soft-start time (tSS) to avoid premature STAT assertion or PWRGD faults.