Analog Devices Inc./Maxim Integrated MAX20034EVKIT#

Overview

MAX20034EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit designed to simplify validation of the MAX20034 dual high-voltage synchronous buck controller IC operating at 400kHz switching frequency, supporting input voltage range 3.5V–42V, and delivering regulated 5.0V/3.3V outputs with ±1.5% accuracy for automotive power-supply applications.

For engineers reviewing the MAX20034EVKIT# datasheet, MAX20034EVKIT# pinout, MAX20034EVKIT# application, or MAX20034EVKIT# equivalent, this kit enables rapid functional verification of dual-phase step-down regulation, skip-mode efficiency testing, PGOOD monitoring, and external synchronization under cold-crank and stop-start conditions.

Technical Context

The MAX20034EVKIT# implements the full reference design for the MAX20034ATIR/VY+ QFN28-EP controller, featuring two out-of-phase 400kHz buck channels with independent FB1/FB2 feedback networks, programmable SYNC modes (skip, forced-PWM, external clock sync), and integrated PGOOD1/PGOOD2 open-drain status signals tied to test points TP_PGOOD1 and TP_PGOOD2.

It incorporates production-grade passive components-including IHLP4040DZ shielded inductors (4.7µH for 400kHz), GRM32ER71A476KE15 output capacitors, and NVMFS5C456NLT1G MOSFETs-and supports jumper-configurable enable (JU1_EN1/JU2_EN2), mode selection (JU3_FSYNC), and EXTVCC sourcing (JU6_EXTVCC).

Key Specifications

Availability

MAX20034EVKIT# is available at Aetrix Electronics and suitable for automotive ADAS module development, infotainment power subsystem validation, and industrial DC-DC converter prototyping requiring stable component supply and pre-validated reference designs.

Supply support for MAX20034EVKIT# 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 automotive, industrial, and communications markets.

The MAX20034EVKIT# belongs to Maxim's automotive power-supply evaluation platform family, engineered specifically to accelerate qualification of high-reliability, wide-input-range DC-DC controllers in harsh automotive environments.

FAQ

What is the primary function of the MAX20034EVKIT#?

The MAX20034EVKIT# is a fully assembled evaluation kit that enables functional validation of the MAX20034 dual synchronous buck controller IC. It provides immediate access to both regulated outputs (5.0V and 3.3V), SYNC mode control via JU3_FSYNC, and real-time PGOOD monitoring through dedicated test points-allowing engineers to verify timing, regulation accuracy, and protection behavior without custom PCB design.

Does the MAX20034EVKIT# support 2.2MHz operation?

No, the MAX20034EVKIT# is configured exclusively for 400kHz operation, as confirmed by its ordering designation and Table 2 component values (e.g., L1/L3 = 4.7µH, C10/C28 = 1500pF). For 2.2MHz evaluation, the distinct part number MAX20034HFEVKIT# must be used, which uses different inductors and capacitors optimized for higher frequency.

How do I configure the MAX20034EVKIT# for skip mode versus forced-PWM mode?

Skip mode versus forced-PWM is controlled by the JU3_FSYNC jumper: pins 2–3 shunted enables skip mode (light-load efficiency optimization), while pins 1–2 shunted forces PWM across all loads. This configuration directly drives the SYNC pin of the onboard MAX20034ATIR/VY+, matching the IC's documented behavior for dynamic mode selection during MAX20034EVKIT# operation.

Can the output voltages on the MAX20034EVKIT# be adjusted beyond 5.0V and 3.3V?

Yes - the MAX20034EVKIT# supports adjustable outputs via FB1 and FB2 feedback dividers. To modify VOUT1, remove R1 and install a 0Ω resistor on R29, then calculate R2/R3 using VFB1 = 1V; similarly, for VOUT2, remove R27 and install 0Ω on R31, then compute R25/R26 using VFB2 = 1V. These equations are explicitly provided in the MAX20034EVKIT# documentation.

What protection features can be validated using the MAX20034EVKIT#?

The MAX20034EVKIT# allows validation of overvoltage lockout (OVL), undervoltage lockout (UVLO), cycle-by-cycle current limiting, and thermal shutdown - all implemented within the MAX20034ATIR/VY+ IC. Additionally, PGOOD1 and PGOOD2 test points (TP_PGOOD1/TP_PGOOD2) enable real-time monitoring of output regulation status, pulling low when either VOUT drops below 92% of nominal value.