Diodes Incorporated AP22653W6-EVM

Overview

AP22653W6-EVM from Diodes Incorporated is an evaluation module for the AP22653W6 precision adjustable current-limited power switch in SOT26 package, supporting 3.0–5.5 V input, up to 2.1 A load current, ±7% current-limit accuracy at 1.735 A (RLIM = 15 kΩ), and active-high enable logic. It enables rapid validation of over-current protection, fault reporting, and soft-start behavior in USB-compliant power delivery paths.

For engineers reviewing the AP22653W6-EVM datasheet, AP22653W6-EVM pinout, AP22653W6-EVM application, or AP22653W6-EVM equivalent, this board provides direct access to IN, OUT, EN, FAULT, and ILIM signals via test points, supports 120 µF output capacitance per USB requirements, and integrates all passive components needed for functional evaluation without external BOM additions.

Technical Context

The AP22653W6-EVM implements a fixed-configuration demonstration of the AP22653W6 IC with RLIM = 20 kΩ, setting nominal current limit to ~1.45 A. It includes 10 µF input decoupling (C2), dual 0.1 µF ceramic bypass caps (C3/C4), and a 120 µF aluminum output capacitor (C7) meeting USB capacitive load requirements.

Board-level features include six test-point terminals for IN, OUT, GNDs, EN, and FAULT; a 10 kΩ pull-down resistor (R1) on EN; and a short (R3) enabling active-high operation. No NC components are populated, and PCB layout follows Diodes' recommended thermal pad and trace width guidelines for SOT26.

Key Specifications

Availability

AP22653W6-EVM is available at Aetrix Electronics and suitable for USB power delivery validation, set-top box power rail testing, and LCD monitor hot-swap evaluation requiring stable component supply and pre-validated reference design.

Supply support for AP22653W6-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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP22653W6-EVM belongs to Diodes' Power Switch Evaluation Module product line, designed specifically to accelerate qualification of adjustable current-limiting switches in USB-compliant, hot-plug, and fault-tolerant power distribution applications.

FAQ

What is the purpose of the 120 µF output capacitor on the AP22653W6-EVM?

The 120 µF aluminum electrolytic capacitor (C7) satisfies USB specification requirements for output capacitance in power-switched ports, ensuring stable voltage regulation during load transients and preventing bus collapse during hot-plug events. Its 25 V rating provides margin above 5.5 V max input, and its 105°C rating supports long-term reliability under continuous 2.1 A operation.

How does the AP22653W6-EVM demonstrate fault response time?

The board routes the FAULT pin to a dedicated red test point, allowing oscilloscope measurement of response latency. With RLIM = 20 kΩ, the AP22653W6 triggers FAULT within 5 µs (typical) when output current exceeds ~1.45 A, and the integrated 6 ms deglitch filter suppresses false trips from sub-millisecond current spikes caused by capacitive inrush or ESD.

Can the AP22653W6-EVM be used to evaluate reverse current blocking?

Yes - the AP22653W6 IC blocks reverse current from OUT to IN during shutdown (EN = low) and limits reverse current during enable (EN = high). The EVM's unidirectional layout, absence of back-feed paths, and direct access to IN/OUT/GND test points allow verification of <1 µA reverse leakage using a picoammeter across IN–OUT while applying reverse bias.

Is the AP22653W6-EVM compatible with the AP22652W6 device?

No - the AP22653W6-EVM is configured for active-high enable (AP22653), with R3 installed as a short and R4 omitted. To evaluate AP22652W6 (active-low), R3 must be removed and R4 installed as a short. The PCB silkscreen and schematic confirm this hardware-selectable enable polarity, making the board dual-use but not plug-and-play interchangeable without modification.