Analog Devices Inc./Maxim Integrated MAXM17720EVKIT#

Overview

MAXM17720EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit designed to validate the MAXM17720 micro-SLIC power module - a 10-pin, wide-input (8.4V–60V) integrated step-down converter (5V/150mA) with co-located linear regulator (3.3V/50mA), operating at 570kHz switching frequency and delivering up to 85% efficiency at 24V input.

For engineers reviewing the MAXM17720EVKIT# datasheet, MAXM17720EVKIT# setup procedure, MAXM17720EVKIT# performance report, or MAXM17720EVKIT# EMI compliance data, this kit provides validated PCB layout, configurable EN/UVLO, PWM/PFM mode selection, external clock synchronization, and CISPR22 Class B conducted/radiated emissions validation for industrial power supply design verification.

Technical Context

The MAXM17720EVKIT# hosts three electrically isolated evaluation circuits on one PCB - for MAXM17712, MAXM17720, and MAXM17724 - each with independent input, output, enable, and mode control. The MAXM17720 section uses R21/R22 (3.32MΩ/562kΩ) to set 8.4V UVLO, R25 (78.7kΩ) to configure 570kHz switching frequency, and jumpers JU21/JU22 to control enable state and PFM/PWM operation.

It supports full characterization of load transient response (5mA→75mA & 75mA→150mA), startup/shutdown timing, output ripple (≤10mV_pp at 150mA), PSRR (≥40dB up to 100kHz), stability (60.05° phase margin), and EMI filtering using optional LEMI_1 (82µH), CEMI_1 (0.47µF), and CEMI_2 (1µF) components.

Key Specifications

Availability

MAXM17720EVKIT# is available at Aetrix Electronics and suitable for industrial power system validation, embedded power architecture prototyping, and DC-DC converter qualification requiring stable component supply, repeatable test conditions, and pre-verified EMI performance.

Supply support for MAXM17720EVKIT# 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) designs highly integrated analog and mixed-signal ICs for power, sensing, communications, and security applications.

The MAXM177xx family delivers compact, high-efficiency power modules targeting space-constrained industrial, medical, and test equipment where reliability, low EMI, and rapid power design validation are critical.

FAQ

What devices does the MAXM17720EVKIT# evaluate?

The MAXM17720EVKIT# evaluates the MAXM17720 micro-SLIC power module specifically - a 10-pin integrated buck + LDO module delivering 5V/150mA and 3.3V/50mA. Though the PCB also hosts MAXM17712 and MAXM17724 sections, the MAXM17720EVKIT# part number denotes the complete kit configured and tested for MAXM17720 evaluation per Maxim's documentation and BOM.

Does the MAXM17720EVKIT# require external components to operate?

No - the MAXM17720EVKIT# is fully assembled and tested with all required passives: input capacitors (C23 = 1µF/100V), output capacitors (C25 = 10µF/10V), UVLO resistors (R21/R22), frequency-setting resistor (R25), and LDO/output decoupling (C27/C28). Optional EMI filter parts (LEMI_1, CEMI_1, CEMI_2) are provided for compliance testing but not needed for basic functionality.

How is the switching frequency set on the MAXM17720 section of the MAXM17720EVKIT#?

The MAXM17720 section uses resistor R25 (78.7kΩ, 0402) connected to the RT pin to set the switching frequency to 570kHz, as specified in the MAXM17710–MAXM17726 datasheet. This value is selected to optimize efficiency and component size across the 8.4V–60V input range and matches the factory configuration documented in the MAXM17720EVKIT# evaluation report.

Can the MAXM17720EVKIT# be used to evaluate adjustable-output operation?

No - the MAXM17720EVKIT# evaluates the fixed-output MAXM17720 (5V buck / 3.3V LDO). Adjustable output is supported only by the MAXM17724 variant, which uses R33/R34 feedback resistors. The MAXM17720 section has no provision for output voltage adjustment; its FB pin is internally tied to achieve 5V regulation.

What EMI filter components are recommended for CISPR22 Class B compliance with the MAXM17720EVKIT#?

For CISPR22 Class B conducted emissions compliance, the MAXM17720EVKIT# recommends LEMI_1 = 82µH shielded inductor, CEMI_1 = 0.47µF/100V X7R ceramic, and CEMI_2 = 1µF/100V X7R ceramic - matching the configuration validated in the conducted emissions plot (toc40) and referenced in Figure 2 of the MAXM17720EVKIT# datasheet.