Analog Devices Inc./Maxim Integrated MAX77542EVKIT#

Overview

MAX77542EVKIT# from Analog Devices is a fully assembled and tested evaluation board for the MAX77542 four-phase configurable step-down regulator in WLP package. It supports 2.8V–16V input, delivers up to 16A total output (4×4A per phase), features I²C programmability, GUI-controlled voltage/frequency/sequencing, and includes probe sockets, test points, potentiometers, and spare inductors for efficiency tradeoff analysis in power management validation.

For engineers reviewing the MAX77542EVKIT# datasheet, MAX77542EVKIT# pinout, MAX77542EVKIT# application, or MAX77542EVKIT# equivalent, this kit enables rapid characterization of multiphase buck regulation, dynamic voltage scaling (DVS), soft-start/stop ramp control, peak current limiting (5.5A), and multifunction I/O configuration - all with Windows-based GUI via USB Micro-B connection at J1.

Technical Context

The MAX77542EVKIT# implements the full reference design for the MAX77542 IC, including recommended PCB layout, thermal management, and decoupling per Analog Devices' guidelines. It supports all five phase configurations (1ϕ+1ϕ+1ϕ+1ϕ, 2ϕ+2ϕ, 3ϕ+1ϕ, 2ϕ+1ϕ+1ϕ, 4ϕ) via SEL2/SEL3/SEL4 jumpers and resistor networks (R48–R57), with local or remote feedback routing selectable per buck channel using zero-ohm resistors (R5/R6/R38–R43).

Hardware interfaces include a dedicated USB-to-I²C bridge (FT2232HL), level-shifted external I²C header (J18), configurable VIO supply (1.2V/1.8V via J20), ALT_IN test point (J2), and MFIO pins routed to shuntable headers (J10–J17) for EN/POK function assignment. Default outputs are VOUT1=1.0V, VOUT2=1.8V, VOUT3=3.3V, VOUT4=5.0V at 1MHz switching frequency with skip mode enabled.

Key Specifications

Availability

MAX77542EVKIT# is available at Aetrix Electronics and suitable for power management validation, PMIC bring-up, DC-DC efficiency benchmarking, and multiphase regulator qualification requiring stable component supply and full technical support.

Supply support for MAX77542EVKIT# 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The MAX77542EVKIT# belongs to Analog Devices' precision power management evaluation platform family, designed specifically to accelerate development of high-efficiency, multi-rail, dynamically scalable power systems for processors, FPGAs, and ASICs.

FAQ

What is the primary function of the MAX77542EVKIT#?

The MAX77542EVKIT# is a fully assembled evaluation platform for the MAX77542 four-phase step-down regulator. It enables engineers to validate multiphase buck operation, configure output voltages (0.3V–5.2V), adjust switching frequency (up to 2MHz), set peak current limits (5.5A), and exercise DVS, soft-start/stop, and power sequencing - all via GUI or direct I²C commands. The MAX77542EVKIT# includes hardware controls (jumpers, potentiometers) and measurement infrastructure (probe sockets, test points) for lab-grade characterization.

Does the MAX77542EVKIT# support remote voltage sensing?

Yes, the MAX77542EVKIT# supports both local and remote sensing per buck channel. Local sensing is the default configuration (feedback taken near output capacitors). Remote sensing is enabled by installing zero-ohm resistors R38–R43 to route SNSxP/SNSxN signals to the LOAD plane. Table 5 in the official documentation specifies exact resistor placements for Buck 1–4 under each sensing mode. This capability allows accurate regulation under high-current, long-trace conditions where IR drop matters.

How do I change the default output voltage on the MAX77542EVKIT#?

You can change the default output voltage on the MAX77542EVKIT# in two ways: (1) Hardware - adjust SEL1–SEL4 jumpers (J4–J7) to connect potentiometers instead of fixed resistors (e.g., move J5 from 2-4 to 3-4 or 4-6), then tune the pot to set initial VOUT at power-on; (2) Software - use the Windows GUI to navigate to Buck 1–4 Configuration tabs, drag sliders for "Buck Normal Output Voltage", and click Write to update registers in real time. Both methods are supported and documented in the MAX77542EVKIT# user guide.

Can the MAX77542EVKIT# be used with an external I²C host instead of the USB GUI?

Yes. To use an external I²C host, disconnect the USB cable from J1, move jumper J19 to position 2–3 (to power VIO from the external bus), and connect SCL/SDA/GND lines to J18's 5-pin header. The J18 interface provides level-shifted, protected I²C signals compatible with 1.2V/1.8V/3.3V hosts. The MAX77542EVKIT# does not require the GUI for operation - all registers remain fully accessible via standard I²C read/write commands once powered and addressed correctly.

What inductors are included with the MAX77542EVKIT# for testing?

The MAX77542EVKIT# ships with eight spare inductors: four DFE252012F-R47M (0.47µH, 4.9A) and four XEL4020-152ME (1.5µH, 7.5A), in addition to the populated L1–L4 (two 1µH + two 1.5µH). These allow direct comparison of efficiency, ripple, and transient response across inductance values and saturation currents - critical for optimizing performance in different load and voltage combinations. Inductor selection directly impacts peak current limit margin and thermal behavior, as confirmed in the MAX77542 datasheet recommendations.