Analog Devices Inc./Maxim Integrated MAX17620EVKIT#

Overview

MAX17620EVKIT# from Maxim Integrated is an evaluation kit for the MAX17620 4MHz, 600mA synchronous step-down DC-DC converter; it delivers a preset 1.8V output across 2.7V–5.5V input, supports forced-PWM/skip mode selection via JU2, and includes open-drain PGOOD monitoring and external EN control for power sequencing validation in compact power rail designs.

For engineers reviewing the MAX17620EVKIT# datasheet, MAX17620EVKIT# pinout, MAX17620EVKIT# application, or MAX17620EVKIT# equivalent, this board enables rapid functional verification of MAX17620's efficiency (91% peak), load regulation (±5mV over 0–600mA), thermal shutdown behavior, and mode-switching transient response under real-world PCB layout constraints.

Technical Context

The MAX17620EVKIT# implements the MAX17620 IC in a fixed-output configuration with internal compensation, eliminating need for external loop components. It validates the device's 4MHz constant-frequency operation, brick-wall current-limit protection, and PGOOD assertion accuracy (±3% VOUT tolerance) under varying line/load conditions.

Mode selection via JU2 jumper directly configures the MODE pin between IN (skip mode) and GND (forced-PWM mode), enabling direct comparison of light-load efficiency trade-offs without firmware or register writes. The EN control via JU1 provides hardware-level on/off sequencing capability aligned with system power-up requirements.

Key Specifications

Availability

MAX17620EVKIT# is available at Aetrix Electronics and suitable for power supply validation, embedded system bring-up, and DC-DC converter qualification requiring stable component supply and documented reference performance data.

Supply support for MAX17620EVKIT# 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

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The MAX17620 product line targets space-constrained, high-frequency DC-DC conversion in portable and IoT devices, emphasizing miniature footprint, fast transient response, and robust protection features.

FAQ

What is the primary function of the MAX17620EVKIT#?

The MAX17620EVKIT# is a fully assembled evaluation platform designed to demonstrate and validate the electrical performance of the MAX17620 4MHz, 600mA step-down DC-DC converter. It enables engineers to verify output regulation, efficiency curves, PGOOD timing, mode-switching behavior, and thermal response without designing a custom PCB. The MAX17620EVKIT# includes preconfigured feedback resistors, jumpers for EN and MODE control, and test points for critical signals.

Can the output voltage of the MAX17620EVKIT# be adjusted, and how?

Yes, the MAX17620EVKIT# supports adjustable output voltages from 1.5V to 3.4V by modifying the R2 feedback resistor while keeping R1 fixed at 24kΩ. The output is calculated using VOUT = 0.8 × (1 + R1/R2). Table 3 in the user guide lists standard R2 values for common rails (e.g., 11.3kΩ for 2.5V). The MAX17620EVKIT# ships with R1=24kΩ and R2=19.1kΩ to deliver its default 1.8V output.

How do I configure forced-PWM vs. skip mode on the MAX17620EVKIT#?

Use jumper JU2 to configure the MODE pin: place shunt across pins 1–2 for skip mode (default, optimized for light-load efficiency), or across pins 2–3 for forced-PWM mode (constant frequency, lower output ripple). An open JU2 also defaults to skip mode. This hardware-level selection allows immediate validation of both operating modes without software or register access - a key feature of the MAX17620EVKIT# design.

Does the MAX17620EVKIT# include thermal protection testing capability?

Yes, the MAX17620EVKIT# incorporates the MAX17620's built-in thermal shutdown circuitry and allows observation of thermal foldback and recovery behavior. When board temperature exceeds the IC's junction limit (typically +150°C), the MAX17620 disables switching and asserts PGOOD low; recovery occurs after cooldown. This behavior can be monitored using the PGOOD test point and thermal imaging or thermocouple measurements during sustained 600mA load testing.

What power supply specifications are required to operate the MAX17620EVKIT#?

A stable 2.7V–5.5V DC source capable of delivering ≥600mA is required. The MAX17620EVKIT# draws minimal quiescent current in shutdown (EN disabled), but full-load operation demands adequate current headroom and low-noise regulation to avoid input droop. Recommended supplies include bench units with remote sense and ≤10mV RMS ripple - consistent with test conditions used to generate the MAX17620EVKIT#'s published efficiency and regulation plots.