Analog Devices Inc./Maxim Integrated MAX17682EVKITD#

Overview

The MAX17682EVKITD# from Maxim Integrated is an evaluation kit for the MAX17682 high-voltage iso-buck DC-DC converter, enabling rapid prototyping of isolated 4.5V–42V input power supplies delivering up to 10W. It supports adjustable switching frequency (100–500kHz), primary-side feedback regulation (±1.2% over –40°C to +125°C), and features a 20-pin TQFN package with integrated 3.7A peak-current MOSFETs.

For engineers reviewing the MAX17682EVKITD# datasheet, MAX17682EVKITD# pinout, MAX17682EVKITD# application, or MAX17682EVKITD# equivalent, this kit provides validated reference design, thermal performance data, layout guidance, and full schematic documentation for industrial isolated power supply development using the MAX17682 IC.

Technical Context

The MAX17682EVKITD# implements the MAX17682's peak-current-mode PWM control architecture with primary-side regulation, eliminating optocouplers and secondary-side feedback components. It integrates synchronous high- and low-side NMOS switches (R_DS(on) = 165mΩ/80mΩ) and supports external frequency synchronization via the SYNC pin (1.1× to 1.4× f_SW).

It validates critical system-level behaviors including hiccup-mode overcurrent protection (triggered by runaway current ≥3.7A or FB <0.58V), programmable EN/UVLO (1.215V rising threshold), soft-start timing (via SS pin capacitor), and RESETB power-good assertion (1024 cycles after FB reaches 95% regulation).

Key Specifications

Availability

The MAX17682EVKITD# is available at Aetrix Electronics and suitable for industrial process control, smart meter communication hubs, medical equipment isolated power supplies, and floating power supply generation requiring stable component supply and fast design validation.

Supply support for MAX17682EVKITD# 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for industrial, automotive, and communications applications.

The MAX17682 product line delivers compact, high-efficiency isolated DC-DC conversion for space-constrained industrial systems where optocoupler-free, primary-side regulated power is required.

FAQ

What is the MAX17682EVKITD# used for?

The MAX17682EVKITD# is an evaluation kit designed specifically to accelerate development and validation of power supply designs using the MAX17682 iso-buck DC-DC controller IC. It provides a fully assembled, tested PCB with reference schematics, bill of materials, layout files, and test reports - enabling engineers to verify performance metrics like efficiency (>90%), regulation accuracy (±1.2%), hiccup-mode response, and thermal behavior before committing to custom design. The MAX17682EVKITD# does not generate power independently but demonstrates how the MAX17682 IC interfaces with transformers, gate drivers, and feedback networks in real-world isolated topologies.

Does the MAX17682EVKITD# include the MAX17682 IC?

Yes, the MAX17682EVKITD# includes one pre-mounted MAX17682 IC in its 20-pin TQFN (4mm × 4mm) package. The kit is built around the MAX17682 controller and integrates all necessary passive components - including input/output capacitors, RT and SS timing components, BST flying capacitor, and compensation network - to operate as a functional iso-buck reference design. No additional ICs are required to evaluate the core functionality of the MAX17682 IC, though external transformers and secondary-side rectification must be added per application requirements.

Can the MAX17682EVKITD# be used to evaluate different output voltages?

Yes, the MAX17682EVKITD# supports adjustable primary output voltage via the FB resistive divider (R1/R2), enabling evaluation across the full 0.9V to 92% V_IN range. The kit includes footprint options and test points to easily swap R1/R2 values, and its design accommodates common off-the-shelf transformers with varying turns ratios (K). Secondary output voltage is determined by K and primary regulation - so changing K or the FB divider directly alters the final isolated output. All electrical characteristics, including regulation accuracy and transient response, have been verified across multiple V_OUT configurations using the MAX17682EVKITD#.

What thermal performance data is provided with the MAX17682EVKITD#?

The MAX17682EVKITD# documentation includes measured junction-to-ambient thermal resistance (θ_JA = 33°C/W) on a standard multilayer board, junction-to-case (θ_JC = 2°C/W), and continuous power dissipation limits (2424.2mW at T_A = +70°C). Thermal imaging reports and temperature rise vs. load curves are included, showing ≤15°C rise at full 10W load under forced convection. These data confirm the MAX17682EVKITD# meets industrial operating requirements from –40°C to +125°C ambient, and validate the exposed-pad grounding and thermal via implementation recommended for production layouts using the MAX17682 IC.

Is external synchronization supported on the MAX17682EVKITD#?

Yes, the MAX17682EVKITD# includes dedicated test points and routing for the SYNC pin, fully supporting external clock synchronization as specified in the MAX17682 datasheet. It has been validated with input clocks ranging from 1.1× to 1.4× the programmed f_SW (e.g., 275kHz–350kHz when f_SW = 250kHz), with minimum pulse width >50ns. The kit's layout preserves signal integrity on the SYNC path, and oscilloscope waveforms confirm clean edge alignment and jitter suppression - confirming that the MAX17682EVKITD# enables reliable multi-converter synchronization in noise-sensitive industrial systems using the MAX17682 IC.