Analog Devices Inc./Maxim Integrated MAX17690EVKITJ#

Overview

The MAX17690EVKITJ# from Maxim Integrated is a fully assembled and tested evaluation kit designed to demonstrate the operation of the MAX17690 isolated No-Opto flyback DC-DC controller in a 12V/2.1A output configuration. It supports 40V–80V input, delivers ±8% output regulation without optocoupler or auxiliary winding, and achieves 89.9% full-load efficiency at 100kHz switching frequency for Power-over-Ethernet applications.

For engineers reviewing the MAX17690EVKITJ# datasheet, MAX17690EVKITJ# pinout, MAX17690EVKITJ# application, or MAX17690EVKITJ# equivalent, this EV kit provides verified PCB layout, proven transformer design, and complete test data including load transient response, efficiency vs. load current, and output regulation across line, load, and temperature.

Technical Context

The MAX17690EVKITJ# implements a primary-side regulated, isolated flyback topology using the MAX17690 controller (TQFN-16-EP), eliminating the need for secondary-side optocoupler feedback. It employs a novel sampling technique to sense and regulate the isolated +12V output directly from the primary side.

This EV kit operates over a 40V–80V DC input range and delivers up to 2.1A continuous output current with tight regulation (±8%) and fast transient response-verified by oscilloscope waveforms showing VOUT stability during 1A→2.1A load steps.

Key Specifications

Availability

MAX17690EVKITJ# is available at Aetrix Electronics and suitable for Power-over-Ethernet (PoE) system validation, isolated DC-DC converter reference design verification, and industrial embedded power supply qualification requiring stable component supply and documented performance data.

Supply support for MAX17690EVKITJ# 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, communications, computing, and consumer applications.

The MAX17690EVKITJ# belongs to Maxim's isolated power evaluation platform family, developed specifically to accelerate adoption of No-Opto flyback controllers in space-constrained, high-reliability PoE-powered systems.

FAQ

What is the primary function of the MAX17690EVKITJ#?

The MAX17690EVKITJ# is a fully assembled evaluation kit that demonstrates the operation of the MAX17690 isolated No-Opto flyback DC-DC controller. It provides a working 12V/2.1A isolated output from a 40V–80V input without optocoupler feedback. Engineers use the MAX17690EVKITJ# to validate transformer design, verify loop stability, and characterize efficiency and regulation before integrating the MAX17690 into end equipment.

Does the MAX17690EVKITJ# require an external optocoupler for feedback?

No, the MAX17690EVKITJ# does not require an external optocoupler. It uses the MAX17690's proprietary primary-side sensing architecture to regulate the isolated +12V output directly from the primary winding. This eliminates optocoupler latency, aging effects, and secondary-side component count-confirmed by ±8% regulation across line, load, and temperature in the MAX17690EVKITJ# performance report.

What input voltage range is supported by the MAX17690EVKITJ#?

The MAX17690EVKITJ# supports a 40V to 80V DC input range, aligned with IEEE 802.3bt Type 3 (51W) and Type 4 (71W) Power-over-Ethernet power sourcing equipment (PSE) outputs. The board maintains stable 12V regulation and 89.9% peak efficiency across this full range, as validated in the EV kit's published efficiency vs. load curves.

Can the MAX17690EVKITJ# be used to evaluate other output voltages?

The MAX17690EVKITJ# is factory-configured for +12V output only. While the underlying MAX17690 controller supports adjustable outputs via external resistive dividers, the MAX17690EVKITJ# PCB has fixed FB network components (R11/R15 = 49.9kΩ) and no provision for output voltage reconfiguration. Any change requires redesigning the feedback network and validating transformer turns ratio-beyond the scope of the pre-tested MAX17690EVKITJ#.

Is the MAX17690EVKITJ# RoHS compliant?

Yes, the MAX17690EVKITJ# is RoHS compliant, as indicated by the "#" suffix in its part number per Maxim Integrated's ordering nomenclature. All components listed in the MAX17690EVKITJ# bill of materials-including the MAX17690ATE+ controller, Sumida transformer, Murata/TDK capacitors, and Vishay resistors-meet RoHS Directive 2011/65/EU requirements for lead-free soldering and hazardous substance restrictions.