Analog Devices Inc./Maxim Integrated MAX17505EVKITB#

Overview

MAX17505EVKITB# from Maxim Integrated is an evaluation kit for the MAX17505 high-voltage synchronous step-down DC-DC converter, supporting 4.5V–60V input and delivering up to 1.7A at 0.9V–90%VIN output. It implements peak-current-mode control with selectable PWM/DCM/PFM operation modes, features internal compensation, and targets industrial power supplies and high-voltage point-of-load applications.

For engineers reviewing the MAX17505EVKITB# datasheet, MAX17505EVKITB# pinout, MAX17505EVKITB# application, or MAX17505EVKITB# equivalent, this kit enables rapid validation of the MAX17505 IC's performance across input voltage range, load transient response, soft-start behavior, and mode-switching efficiency in real PCB layouts.

Technical Context

The MAX17505EVKITB# implements the full reference design for the MAX17505 IC, including its 20-pin TQFN (4mm × 4mm) footprint, integrated high-side/low-side MOSFETs (R_DS(on)H = 325mΩ, R_DS(on)L = 150mΩ), and complete support circuitry: BST capacitor (0.1µF), soft-start capacitor (5600pF), feedback divider, RT resistor (40.2kΩ for 500kHz), and VCC LDO bypass (2.2µF).

It validates key operational behaviors: EN/UVLO threshold programming (1.215V typ), open-drain RESET assertion at 92% FB regulation, MODE pin-driven mode selection (SGND = PWM, open = PFM, VCC = DCM), and external clock synchronization via SYNC pin (1.1× to 1.4× f_SW capture range).

Key Specifications

Availability

MAX17505EVKITB# is available at Aetrix Electronics and suitable for industrial power supply validation, base station power design, and high-voltage single-board system development requiring stable component supply and fast time-to-test.

Supply support for MAX17505EVKITB# 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 high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX17505EVKITB# belongs to Maxim's high-voltage DC-DC evaluation kit product line, engineered to accelerate design-in of wide-input synchronous buck regulators in harsh environments.

FAQ

What is the primary function of the MAX17505EVKITB#?

The MAX17505EVKITB# is a fully assembled and tested evaluation kit for the MAX17505 synchronous step-down DC-DC converter. It allows engineers to validate the IC's electrical performance-including efficiency, transient response, soft-start behavior, and mode switching-under real-world conditions using standard lab equipment and configurable jumpers.

Does the MAX17505EVKITB# support both MAX17505 and MAX17505S ICs?

No. The MAX17505EVKITB# is specifically designed and validated for the MAX17505 IC. While pin-compatible with the MAX17505S, it does not implement the shorter minimum on-time (55ns vs. 135ns) or higher-frequency optimizations of the MAX17505S variant, and no documentation confirms full functional equivalence on this board.

How is output voltage configured on the MAX17505EVKITB#?

Output voltage on the MAX17505EVKITB# is set via a precision resistor divider connected to the FB pin. The board ships with configurations for 3.3V and 5V outputs, and users can reconfigure it for any output from 0.9V to 90%VIN by recalculating and installing appropriate FB divider resistors per the MAX17505 datasheet equations.

Can the MAX17505EVKITB# be synchronized to an external clock?

Yes. The MAX17505EVKITB# exposes the SYNC pin with appropriate termination and filtering. When an external clock signal (2.1V VIH min, 0.8V VIL max) within 1.1× to 1.4× the internal f_SW is applied, the MAX17505 inside the kit locks to that frequency-enabling EMI reduction and multi-rail synchronization.

What protection features are demonstrated on the MAX17505EVKITB#?

The MAX17505EVKITB# demonstrates hiccup-mode overcurrent protection (triggered at ~2.8A peak), thermal shutdown (165°C junction), and regulated output monitoring via the open-drain RESET pin, which asserts low when FB falls below 92% of regulation and deasserts after 1024 cycles once FB rises above 95%.