Analog Devices Inc./Maxim Integrated MAX20474EVKIT#

Overview

MAX20474EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit designed to characterize the MAX20474 synchronous boost converter-specifically the adjustable-output MAX20474ATDA/V+ variant-with 3.0V–5.5V input, 6V–18V output, 1A load capability, ±1.5% output voltage accuracy (fixed option), and 2.2MHz fixed-frequency PWM operation for automotive and industrial DC-DC power design validation.

For engineers reviewing the MAX20474EVKIT# datasheet, MAX20474EVKIT# pinout, MAX20474EVKIT# application, or MAX20474EVKIT# equivalent, this kit supports rapid functional verification of adjustable/fixed-output boost performance, spread-spectrum EMI reduction, FPWM/SKIP mode selection, RESET timing validation, and closed-loop stability analysis with external network analyzer integration.

Technical Context

The MAX20474EVKIT# implements the MAX20474ATDA/V+ IC in a 14-pin TDFN package, enabling direct evaluation of its current-mode control architecture, dual operating modes (FPWM via SYNC tied to AV or SKIP via grounded/open SYNC), and programmable spread-spectrum modulation for radiated emissions compliance. It supports both fixed-output (6V–18V in 250mV steps) and resistor-adjustable configurations using R3/R4 feedback network.

Test points (VIN_TP, VOUT_TP, LX_TP), configurable jumpers (J1–J3), and test loops (SYNC, EN, RESET, BIAS) provide full access to enable/disable control, mode selection, spread-spectrum activation, reset assertion timing (0.5ms–14.8ms OTP-programmed), and switch-node waveform analysis under load transients up to 1A.

Key Specifications

Availability

MAX20474EVKIT# is available at Aetrix Electronics and suitable for automotive ADAS power supply validation, industrial sensor node boost conversion, and embedded system DC-DC reference design requiring stable component supply, quick-turn evaluation, and production-ready layout practices.

Supply support for MAX20474EVKIT# 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, communications, and computing applications.

The MAX20474 product line delivers high-efficiency, high-accuracy synchronous boost converters targeting space-constrained automotive infotainment, camera modules, and radar subsystems requiring low EMI and robust thermal performance.

FAQ

What device does the MAX20474EVKIT# evaluate?

The MAX20474EVKIT# evaluates the MAX20474ATDA/V+, an adjustable-output synchronous boost converter IC. It is pre-populated with this specific variant and supports fixed-output versions of the MAX20474 family with minimal external component changes. The kit validates key parameters including output regulation, transient response, efficiency across load conditions, and spread-spectrum EMI reduction-all directly applicable to the MAX20474ATDA/V+ as shipped on the board.

Does the MAX20474EVKIT# support both FPWM and SKIP modes?

Yes, the MAX20474EVKIT# supports both FPWM and SKIP modes via jumper J2. With J2 in position 1–2 (tied to AV), the MAX20474ATDA/V+ operates in forced PWM mode. With J2 in position 2–3 (grounded) or open, it enters SKIP mode for improved light-load efficiency. This behavior is confirmed by the EV kit's Quick Start guide and schematic, and applies directly to the MAX20474ATDA/V+ mounted on the MAX20474EVKIT#.

Can the MAX20474EVKIT# be used to measure closed-loop stability?

Yes-the MAX20474EVKIT# supports closed-loop stability evaluation when resistor R2 is installed and a network analyzer is connected via SIG_INJP/SIG_INJN test points. The Detailed Description section explicitly states this capability, and the schematic confirms R2 placement for stability measurement. This function is valid for the MAX20474ATDA/V+ configuration on the MAX20474EVKIT#.

What is the default spread-spectrum setting on the MAX20474EVKIT#?

The default spread-spectrum setting on the MAX20474EVKIT# is disabled, per Table 1: Jumper J3 is set to position 2–3 (SSEN tied to ground). To enable spread spectrum, J3 must be moved to position 1–2 (SSEN tied to VIN_AV). This configuration directly controls the SSEN pin of the MAX20474ATDA/V+ on the board and affects radiated emissions performance as specified in the MAX20474 datasheet.

How is the output voltage configured on the MAX20474EVKIT#?

The MAX20474EVKIT# ships with the MAX20474ATDA/V+ and uses R3 = 90.9kΩ and R4 = 6.49kΩ to configure an approximate 12V output. This resistor-based feedback network is validated in the Bill of Materials and schematic. Output voltage can be recalculated and reconfigured per the MAX20474 datasheet equations-ensuring accurate adjustment for any target between 6V and 18V on the MAX20474EVKIT#.