Analog Devices Inc./Maxim Integrated MAX17062EVKIT+

Overview

MAX17062EVKIT+ from Maxim Integrated is an evaluation kit for the MAX17062 TFT-LCD step-up DC-DC converter IC, designed to demonstrate high-efficiency 2.6V–5.5V input to up-to-20V output conversion with programmable 640kHz/1.2MHz switching frequency, integrated 22V n-channel MOSFET, and soft-start control. It supports notebook computer displays, LCD monitor panels, and LCD TV panels requiring stable high-voltage bias rails.

For engineers reviewing the MAX17062EVKIT+ datasheet, MAX17062EVKIT+ pinout, MAX17062EVKIT+ application, or MAX17062EVKIT+ equivalent, this kit enables rapid validation of MAX17062-based TFT-LCD power supply designs-including loop compensation tuning, load-transient response testing, thermal performance assessment, and multi-output configuration (e.g., +15V/600mA main, ±15V, +29V) under real-world pulsed-load conditions.

Technical Context

The MAX17062EVKIT+ implements the MAX17062 IC in a fully assembled 10-pin TDFN-EP (3mm × 3mm) layout with optimized PCB grounding-separating PGND and AGND islands-and includes all critical external components: two 4.7μF/10V X5R ceramic input capacitors (C1, C2), dual 10μF/25V output capacitors (C7, C8), 2.7μH power inductor (L1), 3A/30V Schottky diode (D1), and precision feedback resistors (R2 = 47kΩ, R3 = 20kΩ, R4 = 221kΩ) setting VOUT = +15V.

It supports configurable operation modes via on-board jumpers: FREQ pin selectable between AGND (640kHz) or IN (1.2MHz); SHDN controllable for shutdown verification; SS pin accessible for soft-start capacitor (CSS) evaluation; and COMP pin exposed for RC network tuning (RCOMP = 47kΩ, CCOMP1 = 560pF). The board delivers up to 600mA at 15V with >90% efficiency at full load and exhibits <200mV AC-coupled load-transient overshoot under 100mA→1.1A steps.

Key Specifications

Availability

MAX17062EVKIT+ is available at Aetrix Electronics and suitable for notebook display power validation, LCD monitor panel development, and LCD TV panel reference design requiring stable component supply, fast-turn prototyping, and production-ready layout verification.

Supply support for MAX17062EVKIT+ 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 ICs for industrial, computing, and consumer applications.

The MAX17062 product line delivers highly integrated, high-efficiency step-up converters optimized specifically for active-matrix TFT-LCD display bias supplies - addressing tight space constraints, EMI sensitivity, and fast transient demands in portable and flat-panel systems.

FAQ

What is the primary function of the MAX17062EVKIT+?

The MAX17062EVKIT+ is a fully assembled evaluation platform for the MAX17062 step-up DC-DC converter IC. It demonstrates regulated high-voltage generation (up to 20V) from low-input sources (2.6V–5.5V) for TFT-LCD display panels. The MAX17062EVKIT+ includes all necessary passive components, jumper-selectable frequency and shutdown controls, and a thermally optimized PCB layout aligned with Maxim's recommended grounding practices for noise-sensitive applications.

Does the MAX17062EVKIT+ support multiple output voltages?

Yes, the MAX17062EVKIT+ can be configured for multi-output operation as shown in Figure 3 of the MAX17062 datasheet. With minor component changes - including adding charge-pump or inverting regulators downstream of the main +15V rail - it supports auxiliary outputs such as VGON (+29V) and VGOFF (−15V) required by TFT-LCD gate drivers. The MAX17062EVKIT+ board provides test points and routing flexibility to validate these configurations without redesigning the core step-up stage.

How is switching frequency selected on the MAX17062EVKIT+?

Switching frequency on the MAX17062EVKIT+ is selected via the FREQ pin using an onboard jumper. Connecting FREQ to ground sets operation at 640kHz; connecting FREQ to the IN rail selects 1.2MHz. This matches the MAX17062's internal oscillator architecture and allows direct evaluation of trade-offs between inductor size (2.7μH at 1.2MHz vs. 4.7μH at 640kHz), efficiency, and EMI performance - all while maintaining identical regulation accuracy and transient response characteristics.

Can the MAX17062EVKIT+ be used to evaluate loop compensation?

Yes, the MAX17062EVKIT+ provides direct access to the COMP pin with solder pads for series RC network attachment (RCOMP and CCOMP), enabling full loop compensation tuning. The board ships with RCOMP = 47kΩ and CCOMP1 = 560pF pre-installed - values optimized for 15V/600mA output with ceramic output capacitors. Engineers can replace these components to adjust integrator gain and zero placement, then verify stability and transient response using the on-board test points for VOUT, LX, and SS signals.

What thermal protection features are validated on the MAX17062EVKIT+?

The MAX17062EVKIT+ validates the MAX17062's built-in thermal-overload protection, which shuts down the IC when junction temperature exceeds +160°C and auto-restarts after cooling by ~20°C. The evaluation board uses the exposed pad (EP) tied to AGND as a thermal path and includes copper pour areas under the IC to enhance heat dissipation. Under sustained 600mA load at 15V, the MAX17062EVKIT+ maintains safe operating temperatures without forced airflow, confirming robust thermal behavior in real-world panel-mount environments.