Analog Devices Inc./Maxim Integrated MAX20057EVKIT#

Overview

The MAX20057EVKIT# from Maxim Integrated is a fully assembled and tested evaluation kit designed to accelerate development of automotive-grade power systems using the MAX20057 400kHz/2.1MHz, 36V boost controller and dual buck converters. It ships preconfigured with the MAX20057ATIE/VY+ (5V/3.3V/2.1MHz), supports input voltages from 3.5V to 40V (down to 2V with boost preenabled), and includes test points, jumpers, and proven PCB layout for rapid validation in vehicle infotainment and ADAS subsystems.

For engineers reviewing the MAX20057EVKIT# datasheet, MAX20057EVKIT# pinout, MAX20057EVKIT# application, or MAX20057EVKIT# equivalent, this page delivers verified board-level specifications, jumper configuration guidance, output voltage adjustment methods, PGOOD monitoring setup, and FSYNC synchronization behavior - all specific to the shipped 5V/3.3V/2.1MHz variant and its evaluation workflow.

Technical Context

The MAX20057EVKIT# implements the complete reference design for the MAX20057 family, featuring three independent switching regulators: an asynchronous boost stage delivering fixed 10V output, and two current-mode-controlled buck converters providing regulated [email protected] (Buck1) and 3.3V@2A (Buck2). All components are AEC-Q200 qualified and rated for −40°C to +125°C operation.

Board-level control is enabled via configurable jumpers: JU3_EN1/JU2_EN2/JU1_EN3 for individual converter enable, JU2_SUPSW2 to select Buck2 input source (VBATT or boost output), JU4_FSYNC to force PWM mode or enable skip-mode operation, and JU5_EXTVCC to bypass the internal LDO by connecting EXTVCC to VOUT1, VOUT2, or GND.

Key Specifications

Availability

The MAX20057EVKIT# is available at Aetrix Electronics and suitable for automotive infotainment head units, ADAS camera modules, body control modules, and other industrial embedded systems requiring stable component supply and validated power architecture evaluation.

Supply support for MAX20057EVKIT# 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 MAX20057EVKIT# belongs to Maxim's automotive power evaluation platform family, engineered to simplify qualification of multi-rail DC-DC controllers in harsh environments where input transients up to 40V and extended temperature operation are required.

FAQ

What IC does the MAX20057EVKIT# evaluate out-of-the-box?

The MAX20057EVKIT# ships preinstalled with the MAX20057ATIE/VY+, a specific variant of the MAX20057 family configured for 5V/3.3V outputs and 2.1MHz switching frequency. This variant is mounted and fully functional upon receipt, enabling immediate evaluation without component replacement or soldering.

How do I configure the MAX20057EVKIT# to evaluate the 400kHz version of the MAX20057?

To evaluate 400kHz variants of the MAX20057 using the MAX20057EVKIT#, refer to the MAX20057 EV Kit Bill of Materials for required component changes - primarily inductor values (e.g., L1/L2 changed to 10µH) and optional resistor adjustments. The board's layout and jumper infrastructure support both frequency options without PCB modification.

What is the purpose of jumper JU2_SUPSW2 on the MAX20057EVKIT#?

JU2_SUPSW2 selects the input source for Buck2 on the MAX20057EVKIT#: position 2–3 connects Buck2 to the boost output (enabling cascaded regulation), while position 1–2 connects it directly to VBATT. This allows system-level testing of power tree configurations common in automotive domain controllers where intermediate rail generation is required.

Can the output voltages of Buck1 and Buck2 be adjusted on the MAX20057EVKIT#?

Yes - the MAX20057EVKIT# supports adjustable buck outputs. To modify Buck1 (VOUT1), remove R1 and install resistors at R3/R4 per VOUT1 = VFB × (1 + R3/R4), where VFB = 1V (typ) and R4 = 50kΩ. For Buck2 (VOUT2), remove R12 and use R15/R16 with identical formula and R16 = 50kΩ. Default settings deliver 5V and 3.3V respectively.

How is PGOOD monitoring implemented on the MAX20057EVKIT#?

The MAX20057EVKIT# provides dedicated test points TP_PGOOD1 and TP_PGOOD2 tied to the MAX20057's open-drain PGOOD outputs. Installing shunts on JU_PGOOD1 and JU_PGOOD2 pulls these signals to VBIAS, generating active-high logic-level status indicators that go low when respective output voltages fall below 93.5% of nominal regulation - enabling simple fault detection during bench testing.