Diodes Incorporated AP62201Z6-EVM

Overview

AP62201Z6-EVM from Diodes Incorporated is an evaluation board for the AP62201 18V, 2A synchronous buck converter featuring Constant On-Time (COT) control, 135µA quiescent current, and EMI-optimized gate drive. It supports adjustable output voltages from 0.8V to 7V and delivers stable 5V/2A operation with minimal external components on a TSOT26-layout reference design.

For engineers reviewing the AP62201Z6-EVM datasheet, AP62201Z6-EVM pinout, AP62201Z6-EVM application, or AP62201Z6-EVM equivalent, this board enables rapid validation of transient response, efficiency, switching noise, and layout-sensitive EMI performance in point-of-load DC-DC designs.

Technical Context

The AP62201Z6-EVM implements a fixed-frequency (740kHz), COT-controlled buck topology using the AP62201 IC in TSOT26 package. It integrates 90mΩ high-side and 65mΩ low-side MOSFETs, supports bootstrap-gated high-side drive via a 100nF BST–SW capacitor, and uses a 4.7µH power inductor with 19.5mΩ DCR for 5V output at 2A.

Input voltage range is 4.2V–18V; output is set by R1/R2 divider (52.3kΩ/10kΩ for 5V). Protection includes UVLO, cycle-by-cycle valley current limit, and thermal shutdown - all implemented directly by the AP62201 IC without external circuitry.

Key Specifications

Availability

AP62201Z6-EVM is available at Aetrix Electronics and suitable for flat-panel TV power rails, network system PoL conversion, consumer electronics DC-DC validation, and industrial embedded point-of-load applications requiring stable component supply and fast design iteration.

Supply support for AP62201Z6-EVM 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for high-volume electronics markets.

The AP62201 product line targets space-constrained, EMI-sensitive DC-DC applications such as display power, set-top boxes, and networking equipment where low I_Q, fast transient response, and layout-resilient noise performance are critical.

FAQ

What input voltage range is supported on the AP62201Z6-EVM?

The board accepts 4.2V to 18V DC input, verified per AP62201 absolute maximum ratings and recommended operating conditions. Default test configuration uses 12V input, but the design remains functional across the full range with appropriate input capacitance and thermal derating above 15V.

How is the 5V output voltage set and trimmed?

Output voltage is set by the R1/R2 feedback divider (52.3kΩ/10kΩ), yielding 5.0V ±1% at room temperature. Trimming is possible by replacing R1 with a precision potentiometer or parallel resistor network; the FB pin reference is 0.8V ±1% over temperature.

Can the AP62201Z6-EVM be used to evaluate other output voltages?

Yes - Table 1 in the user guide provides validated resistor and inductor values for 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V outputs. Users must replace R1, R2, and L1 per the table and verify stability with load transients and thermal rise.

What test points are accessible for performance measurement?

The board exposes VIN, GND, VOUT, SW, EN, and FB via 0.094" turret test points (JH4–JH7). SW and VOUT allow direct oscilloscope probing for ripple, switching waveform, and transient response without soldering or modification.