Analog Devices Inc./Maxim Integrated MAX17571EVKITA#

Overview

MAX17571EVKITA# from Analog Devices is a fully assembled and tested evaluation kit designed to validate the MAX17571 synchronous step-down DC-DC converter in 3.3V output-voltage applications, supporting up to 1.5A load current over a 4.7V–60V input range at 500kHz switching frequency, with adjustable UVLO, soft-start, open-drain RESET, and external clock synchronization - used for industrial power supply validation and high-voltage DC-DC design verification.

For engineers reviewing the MAX17571EVKITA# datasheet, MAX17571EVKITA# pinout, MAX17571EVKITA# application, or MAX17571EVKITA# equivalent, this kit provides a CISPR 32 Class B-compliant reference layout, proven EMI performance, thermal-optimized PCB implementation, and dual-circuit isolation for concurrent 3.3V/5V evaluation - critical for automotive, industrial, and telecom power system development.

Technical Context

The MAX17571EVKITA# implements one isolated 3.3V output channel using the MAX17571ATC+ IC in a 3mm × 3mm TDFN package, operating at fixed 500kHz switching frequency with synchronous rectification. It features resistor-programmable EN/UVLO (default rising threshold = 4V), adjustable soft-start via external capacitor (e.g., 5600pF for ~1ms), and active-low open-drain RESET with 1024-cycle delay after VOUT reaches 95% of nominal.

This EV kit integrates full input EMI filtering footprints, optional hot-plug damping capacitors (33µF/80V electrolytics), and dedicated RT/SYNC pads for external clock synchronization between 550kHz–700kHz. Its layout separates power, ground, and signal paths to minimize coupling, meeting conducted and radiated emissions limits per CISPR 32 Class B without added shielding.

Key Specifications

Availability

MAX17571EVKITA# is available at Aetrix Electronics and suitable for industrial power supply validation, high-voltage DC-DC reference design, and CISPR 32 EMI-compliant layout prototyping requiring stable component supply and traceable sourcing.

Supply support for MAX17571EVKITA# 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 since 1965.

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

FAQ

What is the primary function of the MAX17571EVKITA#?

The MAX17571EVKITA# is a fully assembled evaluation kit that demonstrates and validates the MAX17571 synchronous step-down DC-DC converter in a 3.3V output configuration. It enables engineers to verify performance metrics including efficiency, transient response, thermal behavior, and EMI compliance under real-world conditions. The MAX17571EVKITA# includes all necessary passive components, jumpers for UVLO/enable control, and test points for direct measurement - eliminating prototype build time and accelerating power architecture validation.

Does the MAX17571EVKITA# support both 3.3V and 5V outputs simultaneously?

No - the MAX17571EVKITA# evaluates only the 3.3V output channel (VOUT1) of the MAX17571. The 5V output channel is implemented on the separate MAX17571EVKITB# board. Although both kits share the same PCB footprint and layout principles, they are electrically isolated circuits hosted on distinct boards; the MAX17571EVKITA# contains no 5V regulation circuitry or associated components.

What input voltage is required to enable the 3.3V output on the MAX17571EVKITA#?

The MAX17571EVKITA# requires an input voltage of at least 4.7V to deliver full 1.5A load current at 3.3V. With default jumper settings (JU101 open), the EN/UVLO rising threshold is set to ~4V, but stable regulation and rated current require VIN ≥ 4.7V. At 4V input, the MAX17571EVKITA# can still operate but only supports up to 0.6A load - a derating specified in the official evaluation kit documentation.

How is the RESET signal configured and used on the MAX17571EVKITA#?

The MAX17571EVKITA# provides an active-low, open-drain RESET output tied to the MAX17571's internal power-good comparator. It asserts high (pulled up externally) 1024 switching cycles after VOUT reaches ≥95% of 3.3V and goes low when VOUT drops below 92% - enabling precise power sequencing in multi-rail systems. The RESET pad on the MAX17571EVKITA# connects directly to the IC's RESET pin and requires an external pull-up resistor to a clean supply, as implemented on the board.

Can the MAX17571EVKITA# be synchronized to an external clock?

Yes - the MAX17571EVKITA# includes dedicated RT/SYNC PCB pads compatible with the MAX17571's external clock synchronization feature. When an external clock signal between 550kHz and 700kHz (1.1× to 1.4× the nominal 500kHz switching frequency) is applied, the MAX17571EVKITA# synchronizes its switching edges to reduce beat frequencies and improve EMI predictability in multi-converter systems - a capability confirmed in the official evaluation kit schematic and layout documentation.