Diodes Incorporated AP22653FDZ-EVM

Overview

AP22653FDZ-EVM from Diodes Incorporated is an evaluation module for the AP22653 precision adjustable current-limited power switch in W-DFN2020-6 package, supporting active-high enable, 125mA–2665mA programmable current limit, 2.1A max continuous load, and fast 5µs short-circuit response. It enables rapid validation of over-current protection, reverse current blocking, and controlled soft-start in USB-compliant power delivery paths.

For engineers reviewing the AP22653FDZ-EVM datasheet, AP22653FDZ-EVM pinout, AP22653FDZ-EVM application, or AP22653FDZ-EVM equivalent, this board provides fully populated test points for IN, OUT, EN, FAULT, ILIM, and GND; includes 120µF output capacitance per USB requirements; and supports real-time current-limit threshold verification using a 20kΩ RLIM resistor.

Technical Context

The AP22653FDZ-EVM implements the AP22653 device in U-DFN2020-6 packaging with all passive components pre-mounted, including 10µF input decoupling (C2), dual 0.1µF bypass caps (C3/C4), and 120µF bulk output capacitance (C7) required for USB compliance. The board uses a 20kΩ resistor (R2) to set nominal current limit at ~1.735A with ±7% accuracy.

It exposes all six terminals-IN, OUT, GND, EN, FAULT, and ILIM-to test points for oscilloscope probing and load control. The FAULT signal features 6ms deglitching to suppress false over-current reporting, and the enable logic is active-high, distinguishing it from the AP22652FDZ-EVM variant.

Key Specifications

Availability

AP22653FDZ-EVM is available at Aetrix Electronics and suitable for USB power delivery validation, embedded system fault-protection testing, and industrial power rail commissioning requiring stable component supply and repeatable lab characterization.

Supply support for AP22653FDZ-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 applications.

The AP22653FDZ-EVM belongs to Diodes' precision power switch evaluation platform family, designed to accelerate design-in of adjustable current-limiting switches in USB-compliant, high-capacitance, and fault-tolerant power distribution systems.

FAQ

What is the purpose of the 120µF capacitor (C7) on the AP22653FDZ-EVM?

The 120µF aluminum electrolytic capacitor (TEAPO KSJ127M025S1A5G11K) satisfies USB specification requirements for output capacitance under heavy capacitive load conditions. It stabilizes the output during current-limit events and ensures safe inrush current handling during hot-plug scenarios without violating voltage droop limits.

How does the AP22653FDZ-EVM differ from the AP22652FDZ-EVM?

The AP22653FDZ-EVM evaluates the active-high enable version (AP22653FDZ), while AP22652FDZ-EVM evaluates the active-low version (AP22652FDZ). Both share identical layout, component values, and test point access, but differ only in the IC's enable polarity and corresponding R3/R4 jumper configuration per schematic.

Can the current-limit threshold be adjusted on the AP22653FDZ-EVM?

Yes-the current-limit threshold is set by resistor R2 (20kΩ), which connects to the ILIM pin. Replacing R2 with another 1% tolerance resistor between 10kΩ and 210kΩ adjusts the limit from 125mA to 2665mA. The board includes no NC footprints for alternate RLIM placement, so R2 must be desoldered and replaced.

Is the AP22653FDZ-EVM RoHS and halogen-free compliant?

Yes-the AP22653FDZ-EVM uses only "Green" components: the AP22653FDZ IC is fully RoHS-compliant, lead-free, and halogen/antimony-free (<900ppm Br, <900ppm Cl, <1000ppm Sb); all passives (TAIYO YUDEN, TEAPO, YAGEO) meet the same environmental specifications per Diodes' definitions.