Analog Devices Inc./Maxim Integrated MAX17245EVKIT#

Overview

MAX17245EVKIT# from Maxim Integrated is an evaluation kit for the MAX17245 3.5A synchronous step-down DC-DC converter, supporting input voltages from 3.5V to 36V and fixed/adjustable output voltages (3.3V/5V or 1V–10V). It enables validation of PWM/PFM mode switching, spread-spectrum EMI reduction, and power-good sequencing in industrial and automotive point-of-load applications.

For engineers reviewing the MAX17245EVKIT# datasheet, MAX17245EVKIT# pinout, MAX17245EVKIT# application, or MAX17245EVKIT# equivalent, this kit provides verified reference design implementation-including TQFN-16 layout, 2.2µH inductor, 22µF ceramic output capacitor, and full BIAS/PGOOD/SYNCOUT/FSYNC signal access-for rapid prototyping of high-efficiency, low-quiescent-current (28µA) buck regulators.

Technical Context

The MAX17245EVKIT# implements the MAX17245 IC in a fully assembled, tested configuration with external components optimized per Maxim's typical application circuit: 2.2µH shielded inductor, 22µF ×2 output capacitors, 0.1µF BST capacitor, 1µF BIAS bypass, and resistor-programmable oscillator (RFOSC = 12kΩ for 2.2MHz operation). It supports both TQFN-16 and TSSOP-16 footprints but ships configured for the 5mm × 5mm TQFN package with exposed thermal pad.

Key operational modes are accessible via jumpers and test points: FSYNC tied to AGND (PFM), BIAS (forced-PWM), or external clock; SYNCOUT routed to SMA connector for cascaded supply timing; and PGOOD monitored with LED indicator. The board includes input transient protection (42V rating), soft-start (8ms), and thermal shutdown recovery-mirroring the IC's production-grade reliability features.

Key Specifications

Availability

MAX17245EVKIT# is available at Aetrix Electronics and suitable for industrial embedded power design, automotive subsystem evaluation, and RF-sensitive power supply development requiring stable component supply and validated reference implementation.

Supply support for MAX17245EVKIT# 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 industrial, automotive, and communications markets.

The MAX17245 product line delivers high-efficiency, low-I_Q synchronous buck converters targeting space-constrained, thermally demanding point-of-load applications where input transients, EMI compliance, and seamless power sequencing are critical.

FAQ

What is the primary function of the MAX17245EVKIT#?

The MAX17245EVKIT# is a fully assembled evaluation platform for the MAX17245 synchronous step-down DC-DC converter. It allows engineers to validate performance-including 3.5A output capability, 28µA quiescent current, PFM/PWM mode selection, spread-spectrum EMI reduction, and power-good signaling-using Maxim's recommended component values and PCB layout before committing to custom design.

Does the MAX17245EVKIT# support both TQFN and TSSOP packages of the MAX17245 IC?

Yes, the MAX17245EVKIT# PCB includes footprints and routing for both the 5mm × 5mm TQFN-16 and TSSOP-16 packages of the MAX17245. The shipped kit is pre-populated with the TQFN variant, but users can desolder and replace it with the TSSOP version using the same solder pads and signal connections.

How is switching frequency configured on the MAX17245EVKIT#?

The MAX17245EVKIT# uses a 12kΩ resistor (RFOSC) connected from the FOSC pin to AGND, setting the internal oscillator to 2.2MHz. This value is confirmed in the Typical Application Circuit and supported by the "SWITCHING FREQUENCY vs. RFOSC" graph. Users may replace RFOSC to adjust frequency between 220kHz and 2.2MHz or drive FSYNC with an external clock for synchronization.

Can the MAX17245EVKIT# demonstrate PFM and forced-PWM modes?

Yes-the MAX17245EVKIT# provides direct access to the FSYNC pin via jumper options: grounding FSYNC selects PFM mode (reduced light-load current consumption), while connecting FSYNC to BIAS or an external clock enables fixed-frequency forced-PWM mode (stable switching frequency for EMI-sensitive RF applications). Both modes are fully functional and measurable on the board.

What thermal performance can be expected from the MAX17245EVKIT# during continuous 3.5A operation?

When operating the MAX17245EVKIT# at 3.5A output with 14V input and 5V output, junction temperature rise is limited by the TQFN-16 package's 35°C/W junction-to-ambient thermal resistance and the board's exposed-pad copper pour. With adequate airflow and 2oz copper, measured temperature rise stays below 65°C above ambient-within the MAX17245's –40°C to +85°C operating range and well below its 175°C thermal shutdown threshold.