Analog Devices Inc./Maxim Integrated MAX20429EVKIT#

Overview

The MAX20429EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit for the MAX20429 dual 6A automotive-grade buck converter, operating from 3.0V–5.5V input with ±1% output voltage accuracy and independent enable/RESET control per channel. It ships with the factory-configured MAX20429CAFNA/VY+ variant, delivering 0.6V on both VOUT1 and VOUT2 by default.

For engineers reviewing the MAX20429EVKIT# datasheet, MAX20429EVKIT# pinout, MAX20429EVKIT# application, or MAX20429EVKIT# equivalent, this kit enables rapid validation of dual-phase low-voltage DC-DC conversion in automotive power systems, including load transient response, FPWM synchronization, and RESET timeout behavior under regulated/unregulated conditions.

Technical Context

The MAX20429EVKIT# implements the complete reference design for the MAX20429 dual buck controller, featuring two independent 6A output stages with resistor-adjustable or factory-programmed output voltages (0.5V–3.8V), fixed-frequency forced PWM mode via SYNC input (1.9–2.3MHz or 2.9–3.6MHz), and individual EN1/EN2 logic-enable inputs with 1.5V high-threshold and 50mV hysteresis.

It integrates automotive-grade passive components-including TDK TFM322512ALMAR22MTAA 0.22µH inductors, KEMET/Panasonic 470µF polymer output capacitors, and Murata GRM32ER71A476KE15 47µF ceramic bulk caps-and provides test points (TP1–TP8), shunt jumpers (J1–J5), and binding posts for precise voltage/current measurement across full 6A load range at -40°C to +125°C.

Key Specifications

Availability

The MAX20429EVKIT# is available at Aetrix Electronics and suitable for automotive ADAS power validation, infotainment SoC core rail testing, and dual-domain microcontroller supply evaluation requiring stable component supply and traceable evaluation hardware.

Supply support for MAX20429EVKIT# 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 automotive, industrial, and communications applications.

The MAX20429EVKIT# belongs to Maxim's automotive power evaluation platform family, engineered specifically to accelerate qualification of high-efficiency, high-reliability dual-buck regulators in safety-critical vehicle subsystems.

FAQ

What does the MAX20429EVKIT# evaluate?

The MAX20429EVKIT# evaluates the MAX20429 dual 6A buck converter IC. It provides a ready-to-use platform to verify output regulation accuracy, load transient response, FPWM synchronization, individual enable/reset sequencing, and thermal performance across the full -40°C to +125°C automotive temperature range. The board ships preconfigured with the MAX20429CAFNA/VY+ variant.

What are the default output voltages on the MAX20429EVKIT#?

The MAX20429EVKIT# ships with the MAX20429CAFNA/VY+ installed and configured for 0.6V on both VOUT1 and VOUT2 by default. This is achieved by bypassing the resistor divider network using zero-ohm jumpers R8/R10 and leaving R9/R11 unpopulated (DNP). Output voltage can be adjusted using external resistors per the formula VOUT = (R8+R9)/R9 × 0.6V.

How do I configure forced PWM mode on the MAX20429EVKIT#?

Forced PWM (FPWM) mode is enabled on the MAX20429EVKIT# by installing jumper J5 in position 1–2, which pulls the SYNC pin to VSUP. This forces constant-frequency operation regardless of load. To synchronize to an external clock, remove J5 and apply a 1.9–2.3MHz (for 2.1MHz fSW) or 2.9–3.6MHz (for 3.2MHz fSW) signal to the SYNC test point.

Can the MAX20429EVKIT# be used to evaluate other MAX20429 variants?

Yes-the MAX20429EVKIT# supports evaluation of other MAX20429 variants, including factory-programmed versions with output voltages from 0.5V to 3.8V. However, optimal performance may require modifying output inductors or capacitors depending on the selected variant's voltage/current requirements. Refer to the MAX20429 IC datasheet for component selection guidance.

What test equipment is required to operate the MAX20429EVKIT#?

To operate the MAX20429EVKIT#, you need a 5V/5A DC power supply (PS1), two digital multimeters (one for voltage, one for current), and a 30W-capable electronic load (EL1). The board includes binding posts (TP1/TP2) and banana jacks (TP5–TP8) for direct connection, and default jumper settings (J1–J4 installed, J5 in 1–2) ensure immediate functional verification per the Quick Start procedure.