Analog Devices Inc./Maxim Integrated MAX17634AEVKIT#

Overview

The MAX17634AEVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit designed to demonstrate the MAX17634A high-voltage synchronous step-down DC-DC converter operating at 3.3V output, 4.25A load current, and 400kHz switching frequency across a 4.5V–36V input range. It supports adjustable EN/UVLO, 1ms soft-start, open-drain RESET, external clock synchronization, and selectable PWM/PFM/DCM modes for power-constrained industrial and embedded applications.

For engineers reviewing the MAX17634AEVKIT# datasheet, MAX17634AEVKIT# pinout, MAX17634AEVKIT# application, or MAX17634AEVKIT# equivalent, this EV kit enables rapid validation of thermal performance, efficiency curves, line/load regulation, transient response, and mode-switching behavior under real-world conditions with pre-optimized PCB layout and factory calibration.

Technical Context

The MAX17634AEVKIT# implements the MAX17634A IC in a fixed 3.3V output configuration using an XAL6060-562ME 5.6μH inductor and optimized ceramic input/output capacitance (4.7μF/47μF), delivering up to 4.25A with peak efficiency >92% at 12V input. Its jumper-based configuration (JU1 for EN/UVLO, JU2 for MODE/SYNC) allows hardware-level control of startup threshold, soft-start timing via C3 (5600pF), and operational mode selection without firmware changes.

Thermal management is prioritized through copper-filled PGND planes, exposed EP pad routing, and optional 47μF/50V electrolytic capacitor (C6) for damping long-cable hot-plug transients. The RESET signal monitors VOUT with 95% turn-on and 92% turn-off thresholds referenced to INTVCC, while the MODE/SYNC pin accepts external clocks for deterministic timing alignment in multi-rail systems.

Key Specifications

Availability

The MAX17634AEVKIT# is available at Aetrix Electronics and suitable for industrial power supply validation, embedded system bring-up, and DC-DC converter qualification requiring stable component supply, pre-verified thermal layout, and production-ready test instrumentation interfaces.

Supply support for MAX17634AEVKIT# 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.

The MAX17634A product line targets high-efficiency, wide-input-voltage DC-DC conversion in space-constrained industrial and transportation systems where reliability under voltage transients and thermal stress is critical.

FAQ

What is the primary function of the MAX17634AEVKIT#?

The MAX17634AEVKIT# is a fully assembled evaluation kit that demonstrates the MAX17634A synchronous step-down DC-DC converter. It provides a proven PCB layout, factory-calibrated 3.3V/4.25A output, and configurable features including EN/UVLO, soft-start, RESET monitoring, and PWM/PFM/DCM mode selection - all to accelerate design validation of the MAX17634A in real-world power systems.

Does the MAX17634AEVKIT# require external programming or firmware to operate?

No, the MAX17634AEVKIT# operates autonomously without firmware. Configuration is achieved via hardware jumpers (JU1 for EN/UVLO, JU2 for MODE/SYNC) and passive components (e.g., C3 for soft-start). All control logic, protection functions, and mode transitions are handled internally by the MAX17634A IC embedded on the board.

Can the MAX17634AEVKIT# be used to evaluate different output voltages?

No - the MAX17634AEVKIT# is preset for a fixed 3.3V output using a dedicated resistor divider (R5/R6) on the FB pin. To evaluate other output voltages, users must modify the feedback network per the MAX17634A datasheet; the EV kit itself does not support adjustable output without hardware changes.

What is the role of the 47μF electrolytic capacitor (C6) on the MAX17634AEVKIT#?

The 47μF/50V electrolytic capacitor (C6) on the MAX17634AEVKIT# dampens input voltage oscillations caused by long cable inductance during hot-plug events. Its ESR interacts with ceramic input capacitors to suppress ringing at the MAX17634A input, preventing false UVLO triggering and improving system robustness in field-deployed industrial power connections.

How is the RESET signal configured and monitored on the MAX17634AEVKIT#?

The RESET signal on the MAX17634AEVKIT# is an active-low, open-drain output pulled up to 5V via INTVCC. It asserts low when VOUT falls below 92% of nominal (3.04V) and deasserts high when VOUT rises above 95% (3.14V). The RESET pad is accessible for oscilloscope or logic analyzer monitoring without additional circuitry.