Analog Devices Inc./Maxim Integrated MAX17571EVKITB#

Overview

MAX17571EVKITB# from Analog Devices is a fully assembled and tested evaluation kit designed to validate the MAX17571 synchronous step-down DC-DC converter in 5V output-voltage applications. It delivers up to 1.5A load current over a 6.5V–60V input range, operates at 500kHz switching frequency, and features adjustable UVLO, soft-start, open-drain RESET, and external clock synchronization - all optimized for EMI-compliant industrial power design.

For engineers reviewing the MAX17571EVKITB# datasheet, MAX17571EVKITB# pinout, MAX17571EVKITB# application, or MAX17571EVKITB# equivalent, this kit enables rapid validation of high-voltage DC-DC performance under real-world thermal, conducted/radiated EMI, and transient conditions - especially where input voltage exceeds 6.5V and stable 5V rail generation is required.

Technical Context

The MAX17571EVKITB# implements one isolated 5V output channel using the MAX17571ATC+ IC in a 3mm × 3mm TDFN package. It supports input undervoltage lockout programming via resistor dividers (R201/R202), soft-start timing set by an external capacitor on the SS pin, and RESET assertion after 1024 switching cycles when VOUT reaches ≥95% of nominal.

This EV kit integrates CISPR 32 Class B-compliant layout techniques including optimized power loop routing, ground plane segmentation, and designated footprints for optional EMI filter components (L101/L201 cut traces). It also includes provisions for hot-plug mitigation using 33µF/80V electrolytic capacitors (CIN105/CIN205) to damp cable-induced oscillations.

Key Specifications

Availability

MAX17571EVKITB# is available at Aetrix Electronics and suitable for industrial power validation, high-voltage DC-DC reference design, and EMI-compliant board-level testing requiring stable component supply and documented layout practices.

Supply support for MAX17571EVKITB# 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, automotive, communications, and healthcare markets.

The MAX17571 evaluation kit series belongs to Analog Devices' Himalaya power portfolio, engineered for rugged, high-efficiency DC-DC conversion in wide-input industrial and transportation systems where reliability, low EMI, and thermal robustness are critical.

FAQ

What is the primary function of the MAX17571EVKITB#?

The MAX17571EVKITB# is a dedicated evaluation platform for the MAX17571 synchronous step-down DC-DC converter, configured specifically for 5V output operation. It enables engineers to verify performance metrics - including efficiency, transient response, thermal behavior, and EMI compliance - under real operating conditions across a 6.5V–60V input range. The MAX17571EVKITB# includes all necessary circuitry, layout optimizations, and test points to accelerate development of high-voltage industrial power supplies.

How does the MAX17571EVKITB# differ from the MAX17571EVKITA#?

The MAX17571EVKITB# evaluates the same MAX17571 IC but is configured for a fixed 5V output (VOUT2), while the MAX17571EVKITA# is configured for 3.3V (VOUT1). Their input voltage thresholds differ: MAX17571EVKITB# requires ≥6.5V to enable, whereas MAX17571EVKITA# enables at ≥4.7V. Each kit has independent EN/UVLO jumpers (JU201 vs. JU101), separate output circuits, and distinct resistor networks for UVLO and soft-start tuning - they are electrically isolated boards sharing only mechanical form factor and layout methodology.

Does the MAX17571EVKITB# support external clock synchronization?

Yes, the MAX17571EVKITB# provides dedicated RT/SYNC PCB pads to synchronize the MAX17571's internal oscillator to an external clock source. The external frequency must be between 1.1× and 1.4× the nominal 500kHz switching frequency (i.e., 550kHz–700kHz). This feature allows precise timing alignment with system clocks or other converters, reducing beat frequencies and improving EMI performance in multi-rail systems. The MAX17571EVKITB# uses R203 (40.2kΩ) to set the base frequency when no external clock is applied.

What protection features are implemented on the MAX17571EVKITB#?

The MAX17571EVKITB# implements full protection as enabled by the underlying MAX17571 IC: cycle-by-cycle overcurrent protection, thermal shutdown, and output undervoltage detection via the open-drain RESET signal. RESET asserts low when VOUT drops below 92% of 5V (i.e., <4.6V) and releases high after 1024 switching cycles once VOUT rises above 95% (≥4.75V). These protections are hardware-based and require no firmware, making the MAX17571EVKITB# suitable for validating safety-critical power sequencing in industrial control systems.

Can the MAX17571EVKITB# be used without modifying jumpers or components?

Yes, the MAX17571EVKITB# ships with default jumper settings (JU201 open) and is fully operational out-of-box. With a 6.5V–60V DC input applied to VIN, it delivers a regulated 5V output capable of sourcing up to 1.5A. All key functions - including UVLO, soft-start, RESET, and external sync - are accessible via test points and PCB pads without soldering or component changes. The MAX17571EVKITB# is intended for immediate bench validation, not as a development board requiring customization to achieve basic functionality.