Analog Devices Inc./Maxim Integrated MAX17687EVKITA#

Overview

MAX17687EVKITA# from Maxim Integrated is an evaluation kit for the MAX17687 iso-buck DC-DC converter IC, enabling rapid prototyping of isolated 10W power supplies with primary-side regulation. It supports input voltages from 4.5V to 60V, delivers up to 3.2A peak primary current, achieves ±1.2% output voltage regulation, and operates across –40°C to +125°C ambient. The kit implements a 12V/750mA isolated output using a 1:1.67 transformer and all-ceramic passive layout.

For engineers reviewing the MAX17687EVKITA# datasheet, MAX17687EVKITA# pinout, MAX17687EVKITA# application, or MAX17687EVKITA# equivalent, this evaluation kit provides validated reference design files, thermal performance data, load transient waveforms, and BOM-ready implementation guidance for industrial isolated power supply development.

Technical Context

The MAX17687EVKITA# implements the MAX17687 IC in a fully assembled, tested 20-pin TQFN (4mm × 4mm) layout with integrated transformer, ceramic input/output capacitors, and precision feedback divider. It demonstrates peak-current-mode PWM control with programmable 100kHz–500kHz switching frequency, primary-side feedback architecture eliminating optocouplers, and hiccup-mode overcurrent protection triggered by runaway current or FB undervoltage.

Key functional validation includes open-drain RESET assertion at 92.5% V_{FB_REG} with 1024-cycle delay on recovery, EN/UVLO threshold settable via external resistor divider (1.215V typ rising), and soft-start timing controlled by SS pin capacitor (5μA charge current). Thermal shutdown activates at 165°C junction with 10°C hysteresis.

Key Specifications

Availability

MAX17687EVKITA# is available at Aetrix Electronics and suitable for industrial process control, smart meter communication hubs, medical equipment isolated power supplies, and floating supply generation requiring stable component supply and fast design validation.

Supply support for MAX17687EVKITA# 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 applications.

The MAX17687EVKITA# belongs to the Rainier series of isolated DC-DC products, engineered to reduce BOM count and layout complexity while delivering up to 10W of isolated power without optocouplers or secondary-side sensing.

FAQ

What is the purpose of the MAX17687EVKITA# evaluation kit?

The MAX17687EVKITA# is a fully assembled evaluation platform for the MAX17687 iso-buck DC-DC controller IC. It enables engineers to validate isolated power supply performance-including efficiency, load transients, soft-start behavior, RESET timing, and thermal response-without designing custom PCBs. The kit implements a 12V/750mA output using primary-side regulation and includes complete schematic, layout, and test data referenced in the MAX17687 datasheet.

Does the MAX17687EVKITA# include the MAX17687 IC?

Yes, the MAX17687EVKITA# contains one pre-mounted MAX17687 IC in a 20-pin TQFN package (4mm × 4mm). The IC is soldered to the board and fully functional, with all supporting components-including transformer, ceramic capacitors, feedback resistors, and BST capacitor-installed and tested per Maxim's reference design guidelines.

Can the MAX17687EVKITA# be used to generate outputs other than 12V?

Yes, the MAX17687EVKITA# can be reconfigured for different output voltages by modifying the FB resistor divider (R1/R2), selecting an appropriate transformer turns ratio (N_SEC/N_PRI), and adjusting the soft-start capacitor. The MAX17687 IC regulates primary-side voltage to ±1.2%, so secondary output scales linearly with turns ratio and diode drop; design equations for V_OUT, V_PRI, and K are provided in the MAX17687 datasheet.

What input voltage range is validated on the MAX17687EVKITA#?

The MAX17687EVKITA# is validated across the full 4.5V to 60V input range specified for the MAX17687 IC. Efficiency plots, load transient waveforms, and thermal imaging in the official documentation confirm stable operation at 16V, 24V, and 36V inputs, with no derating required up to 60V under nominal load conditions and proper heatsinking.

How does the RESET signal function on the MAX17687EVKITA#?

On the MAX17687EVKITA#, the RESET pin provides an open-drain power-good signal asserting low when FB drops below 92.5% of its 0.9V regulation point and deasserting high 1024 switching cycles after FB rises above 95.5%. The signal sinks ≥2mA when low and requires an external pull-up resistor; it also asserts during thermal shutdown and hiccup-mode faults, enabling system-level fault monitoring and sequencing.