Analog Devices Inc./Maxim Integrated MAX20079EVKIT#

Overview

MAX20079EVKIT# from Maxim Integrated is an evaluation kit designed to validate the MAX20079 2.1MHz/400kHz high-voltage synchronous buck converter in automotive-grade 20-pin Side-Wettable TQFN packaging. It delivers up to 3.5A output current, supports 3.5V–36V input, and provides fixed 5V or 3.3V outputs-or adjustable 3V–10V via external resistors-enabling rapid prototyping of power supplies for ADAS camera modules.

For engineers reviewing the MAX20079EVKIT# datasheet, MAX20079EVKIT# pinout, MAX20079EVKIT# application, or MAX20079EVKIT# equivalent, this kit offers fully assembled hardware with test points, configurable jumpers (EN, SPS, FSYNC, J1), PGOOD monitoring, and proven PCB layout optimized for EMI reduction and thermal performance in automotive environments.

Technical Context

The MAX20079EVKIT# implements a complete reference design for the MAX20079 family, pre-installed with the MAX20079AATP/VY+ variant (5V, 2.1MHz). It supports forced-PWM and skip-mode operation via the FSYNC jumper, and includes a voltage-monitoring PGOOD output that asserts low when OUT drops below 92% of nominal regulation.

Input transient tolerance reaches 40V, all passive components are AEC-Q200 rated, and the board features dedicated SUP_FILTER, GND2/GND3 isolation, and BST capacitor routing compliant with high-side switch requirements for mini-buck topologies.

Key Specifications

Availability

MAX20079EVKIT# is available at Aetrix Electronics and suitable for automotive ADAS power validation, infotainment system supply design, and body control module development requiring stable component supply and fast-turn evaluation support.

Supply support for MAX20079EVKIT# 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 MAX20079 product line targets high-reliability automotive power conversion, delivering compact, high-efficiency buck regulators with integrated MOSFETs and robust fault protection for camera modules and radar sensors.

FAQ

What does the MAX20079EVKIT# evaluate?

The MAX20079EVKIT# evaluates the MAX20079 synchronous buck regulator family, specifically pre-installed with the MAX20079AATP/VY+ (5V, 2.1MHz) variant. It enables full functional validation-including efficiency measurement, transient response, PGOOD timing, and thermal profiling-without requiring custom PCB design or component sourcing.

Can the MAX20079EVKIT# be used with other MAX20079 variants?

Yes, the MAX20079EVKIT# supports evaluation of multiple MAX20079 variants. The 3.3V/2.1MHz (MAX20079BATP/VY+) and 400kHz versions (e.g., MAX20079DATP/VY+) can be substituted with minimal changes: only U1 replacement is needed for 3.3V/2.1MHz; 400kHz operation requires swapping L1 to 10μH and adjusting output capacitance to 44μF effective.

How is output voltage adjusted on the MAX20079EVKIT#?

Output voltage is adjusted by removing R6, installing a 0Ω resistor at R3, and populating R4/R5 per the equation VOUT = VFB × (1 + R4/R5), where VFB = 1V (typical) and R5 = 50kΩ. This allows precise setting of 3V–10V outputs while maintaining feedback loop stability verified in the MAX20079EVKIT# layout.

What is the purpose of the PGOOD signal on the MAX20079EVKIT#?

The PGOOD signal on the MAX20079EVKIT# provides a logic-level indication of output regulation status. It sinks current when OUT is within ±2% of nominal (e.g., 4.9V–5.1V for 5V mode); it goes high-impedance if OUT falls below 92% of nominal. Jumper J1 pulls PGOOD up to VBIAS to generate a clean digital signal for system sequencing.

Does the MAX20079EVKIT# support frequency synchronization?

Yes, the MAX20079EVKIT# supports external clock synchronization via the FSYNC pin. With the FSYNC jumper set to FPWM, the MAX20079AATP/VY+ operates in forced-PWM mode across all loads. When driven by an external clock source, the device synchronizes its switching frequency, enabling noise-sensitive multi-rail systems to avoid beat frequencies.