Analog Devices Inc./Maxim Integrated MAX20098EVKIT#

Overview

MAX20098EVKIT# from Maxim Integrated is an evaluation kit designed to validate the MAX20098 automotive synchronous step-down controller operating at 2.2MHz with 3.5µA quiescent current, supporting 3.5V–36V input and delivering up to 7A (configurable to 20A), with fixed 5V output and PGOOD monitoring - used in vehicle power systems requiring high-efficiency DC-DC conversion.

For engineers reviewing the MAX20098EVKIT# datasheet, MAX20098EVKIT# pinout, MAX20098EVKIT# application, or MAX20098EVKIT# equivalent, this kit enables rapid validation of 2.2MHz buck operation, SYNC-synchronized switching, EN-controlled startup, and PGOOD-based output health monitoring under automotive transient conditions (up to 42V).

Technical Context

The MAX20098EVKIT# implements a fully assembled, tested PCB layout for the MAX20098ATEA/VY+ controller IC, featuring dual N-channel MOSFETs (NVMFS5C468NLT1G), 1.2µH inductor (XAL1060-122MEB), and precision current-sense resistor (0.01Ω). It supports forced-PWM and skip-mode operation via the SYNC jumper.

Input voltage range is 3.5V–36V (with 42V transient tolerance); output is factory-configured to 5V ±1% at up to 7A; PGOOD asserts low when VOUT drops >7% below regulation. The kit includes test points for SUP, OUT, PGOOD, LX, and FSYNC.

Key Specifications

Availability

MAX20098EVKIT# is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera module rails, and body control module DC-DC stages requiring stable component supply, proven layout validation, and 2.2MHz switching verification.

Supply support for MAX20098EVKIT# 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 high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications applications.

The MAX20098 product line delivers high-efficiency, low-IQ synchronous buck controllers optimized for automotive 12V/24V systems with stringent transient and EMI requirements.

FAQ

What is the primary function of the MAX20098EVKIT#?

The MAX20098EVKIT# is a fully assembled evaluation platform for the MAX20098 synchronous buck controller. It enables engineers to verify 2.2MHz operation, measure efficiency across load ranges, validate PGOOD behavior, and assess thermal performance under automotive input conditions (3.5V–36V). The MAX20098EVKIT# includes all critical passives, MOSFETs, and test points needed for lab characterization without additional component selection.

Does the MAX20098EVKIT# support both 400kHz and 2.2MHz operation?

No - the MAX20098EVKIT# is specifically configured for 2.2MHz operation using a 1.2µH inductor (XAL1060-122MEB) and matching compensation components. To evaluate 400kHz operation, the MAX20098LFEVKIT# must be ordered; it uses a 4.7µH inductor and adjusted feedback resistors. Component changes between kits are documented in Table 2 of the MAX20098EVKIT# user guide.

How is output voltage set on the MAX20098EVKIT#?

The MAX20098EVKIT# ships with a fixed 5V output achieved by installing R1 (0Ω shunt) and omitting R17/R19. To configure an adjustable output (1V–10V), remove R1 and populate R17 and R19 with resistor values calculated per the MAX20098 datasheet's FB divider equation. The default 5V setting is verified to ±1% at 7A load with proper thermal management.

What role does the SYNC pin play on the MAX20098EVKIT#?

On the MAX20098EVKIT#, the SYNC jumper selects between forced-PWM (shunt 1–2) and skip mode (shunt 2–3). When pulled high, SYNC forces continuous PWM for low-noise operation; when pulled low, it enables light-load skip mode for improved efficiency. The MAX20098EVKIT# also supports external clock synchronization via the FSYNC test point if a clean system clock is available.

Can the MAX20098EVKIT# deliver 20A output current?

The MAX20098EVKIT# is rated for 7A continuous output under standard lab conditions. However, its design - including MOSFET selection (NVMFS5C468NLT1G), inductor (XAL1060-122MEB), and PCB copper weight - supports up to 20A with appropriate thermal management, modified current-sense resistor (R10), and layout enhancements. Full 20A validation requires external heatsinking and airflow per the MAX20098 datasheet thermal guidelines.