Analog Devices Inc./Maxim Integrated MAX17690EVKITE#

Overview

MAX17690EVKITE# from Maxim Integrated is an evaluation kit for the MAX17690 peak-current-mode, fixed-frequency isolated flyback controller operating in DCM. It enables primary-side regulation without optocoupler or auxiliary winding, supports 4.5V–60V input, 50kHz–250kHz programmable switching frequency, and drives logic-level MOSFETs with 2A/4A gate drive. The kit validates designs for industrial and telecom isolated power supplies.

For engineers reviewing the MAX17690EVKITE# datasheet, MAX17690EVKITE# pinout, MAX17690EVKITE# application, or MAX17690EVKITE# equivalent, this evaluation platform provides verified reference schematics, layout guidance, thermal performance data, and no-opto flyback startup/line/load transient characterization under real-world conditions.

Technical Context

The MAX17690EVKITE# implements a complete isolated flyback reference design using the MAX17690 IC, featuring primary-side sensing of reflected output voltage during the flyback off-time to achieve ±5% regulation across line, load, and temperature. It integrates EN/UVLO, OVI, soft-start, hiccup-mode short-circuit protection, and temperature-compensated diode forward-voltage correction via the TC pin.

This kit demonstrates operation with 18V–36V input, 5V/1A output, 36µH transformer, and supports full characterization of NDRV gate drive (2A source / 4A sink), COMP loop stability, CS current-limit accuracy (90–110mV), and RT-programmed frequency (e.g., 49.9kΩ → ~100kHz). All critical waveforms - including steady-state VDS/IPRI, soft-start VOUT, and overload hiccup recovery - are documented per JEDEC-compliant test conditions.

Key Specifications

Availability

MAX17690EVKITE# is available at Aetrix Electronics and suitable for industrial PLC I/O modules, telecom power interfaces, and wide-input isolated DC-DC converters requiring stable component supply, rapid prototyping validation, and production-ready reference design transfer.

Supply support for MAX17690EVKITE# 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 MAX17690 product line delivers no-opto isolated flyback control for cost-sensitive, space-constrained systems where auxiliary windings or optocouplers are undesirable - targeting industrial power supplies, telecom bricks, and distributed control systems.

FAQ

What is the purpose of the MAX17690EVKITE# evaluation kit?

The MAX17690EVKITE# is a fully assembled and tested evaluation platform for the MAX17690 no-opto isolated flyback controller. It allows engineers to validate primary-side regulation performance, measure gate drive timing, characterize hiccup-mode protection, and verify thermal behavior before committing to custom PCB design. The kit includes all necessary components, test points, and documented waveforms for immediate lab use.

Does the MAX17690EVKITE# support input voltages outside 18V–36V?

Yes - while the MAX17690EVKITE# is configured and tested for 18V–36V input, the underlying MAX17690 IC supports 4.5V–60V operation. To extend input range, users must adjust the EN/UVLO and OVI resistor dividers per datasheet equations and verify transformer stress, MOSFET SOA, and INTVCC LDO stability. The kit's layout and component ratings accommodate such modifications with proper engineering review.

Can the MAX17690EVKITE# be used to evaluate temperature compensation?

Yes - the MAX17690EVKITE# includes provision for RTC connection to the TC pin and supports full implementation of temperature-compensated output regulation. By populating RTC (e.g., 27.5kΩ) and selecting appropriate RFB/RSET values per the datasheet's dual-equation method, users can verify reduction of output voltage drift caused by diode forward-voltage temperature coefficient (–1mV/°C to –2mV/°C) across –40°C to +125°C.

What output voltage accuracy does the MAX17690EVKITE# achieve?

The MAX17690EVKITE# achieves ±5% output voltage regulation over line (18V–36V), load (0–1A), and temperature (–40°C to +125°C), as confirmed by test data in the MAX17690 datasheet Figure 9 (Output Voltage vs. Load Current) and Figure 11 (Output Voltage vs. Temperature). This accuracy is attained without optocoupler or auxiliary winding, relying solely on the MAX17690's primary-side sampling algorithm and internal 1.0V SET reference.

Is the MAX17690EVKITE# RoHS compliant and lead-free?

Yes - the MAX17690EVKITE# uses RoHS-compliant, lead-free components and conforms to JEDEC J-STD-020 moisture sensitivity level (MSL) requirements. The MAX17690 IC itself carries a "#" suffix indicating RoHS compliance, and the evaluation board's assembly follows Maxim Integrated's standard lead-free reflow profile (peak 260°C), as documented in package outline 21-0136 and land pattern 90-0031.