Analog Devices Inc./Maxim Integrated MAX17645DEVKITB#

Overview

MAX17645DEVKITB# from Analog Devices is a fully assembled and tested evaluation kit designed to demonstrate the MAX17645D high-efficiency, high-voltage synchronous step-down DC-DC converter operating in PFM mode at light loads. It supports 7V–36V input, delivers 5V/1A output at 650kHz, achieves 91.1% peak efficiency (24V_IN, 5V_OUT, 0.6A), and complies with CISPR32 Class B conducted/radiated emissions for industrial power supply validation.

For engineers reviewing the MAX17645DEVKITB# datasheet, MAX17645DEVKITB# pinout, MAX17645DEVKITB# application, or MAX17645DEVKITB# equivalent, this kit provides verified layout, EN/UVLO programming flexibility, open-drain RESET monitoring, thermal-optimized PCB construction, and EMI filter footprints - all critical for rapid prototyping of 5V high-input-voltage buck converters.

Technical Context

The MAX17645DEVKITB# implements the MAX17645D IC in a fixed 5V output configuration with PFM light-load operation to maximize efficiency across partial-load conditions. Its dual-circuit PCB hosts electrically isolated MAX17645B and MAX17645D sections, enabling side-by-side comparison of PWM vs. PFM behavior under identical input/output conditions.

It integrates programmable EN/UVLO via resistor dividers (RUVL_TOP/RUVL_BOT), fixed 3.15ms soft-start, overcurrent/overtemperature protection, and hot-plug input conditioning using 22µF/50V electrolytic capacitors (C106/C206) to damp cable-induced oscillations - all validated per Analog Devices' reference design guidelines.

Key Specifications

Availability

MAX17645DEVKITB# is available at Aetrix Electronics and suitable for industrial power supply validation, embedded controller 5V rail development, and high-input-voltage DC-DC qualification requiring stable component supply and documented reference performance.

Supply support for MAX17645DEVKITB# 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, communications, and automotive markets.

The MAX17645DEVKITB# belongs to Analog Devices' high-voltage DC-DC evaluation kit product line, engineered to accelerate adoption of the MAX17645 family for rugged 7V–36V input applications demanding high efficiency, low EMI, and reliable 5V output regulation.

FAQ

What is the primary function of the MAX17645DEVKITB#?

The MAX17645DEVKITB# is a fully assembled evaluation kit that demonstrates the MAX17645D high-voltage synchronous step-down DC-DC converter operating in PFM mode at light loads. It delivers a fixed 5V/1A output from a 7V–36V input and provides validated layout, thermal design, and EMI-compliant implementation for rapid prototyping and performance validation of the MAX17645D in real-world applications.

How does the MAX17645DEVKITB# differ from the MAX17645BEVKITB#?

The MAX17645DEVKITB# implements the MAX17645D IC and operates in pulse-frequency modulation (PFM) mode at light loads to improve efficiency, whereas the MAX17645BEVKITB# uses the MAX17645B IC and operates in constant-frequency PWM mode across all load conditions. Both share identical PCB layout, input/output specs, and protection features but enable direct comparison of PFM vs. PWM trade-offs in the same hardware platform.

Does the MAX17645DEVKITB# require external components to operate?

No - the MAX17645DEVKITB# is fully assembled and tested with all required passive and active components installed, including input/output capacitors, inductors, feedback resistors, and the MAX17645D IC. Users only need a 7V–36V, 1A DC power supply and a 5V load to begin evaluation; no soldering or component placement is required for basic operation.

Can the MAX17645DEVKITB# be used to evaluate other output voltages?

No - the MAX17645DEVKITB# is configured exclusively for 5V output via fixed feedback resistor network (R203/R204 = 102kΩ/22.1kΩ). To evaluate alternate output voltages, users must replace the feedback resistors per the MAX17645 data sheet equations; the board does not include jumpers or DIP switches for output voltage adjustment.

What EMI compliance level does the MAX17645DEVKITB# meet?

The MAX17645DEVKITB# meets CISPR32 Class B conducted and radiated emissions requirements when used with its optimized PCB layout and optional EMI filter components installed at designated footprints (L101/L201 cut-trace points). The board's layout minimizes switching node loop area and incorporates ground plane integrity to suppress both common-mode and differential-mode noise sources.