Diodes Incorporated AP22815AWT-EVM

Overview

AP22815AWT-EVM from Diodes Incorporated is an evaluation module for the AP22815 3A single-channel current-limited high-side power switch with output over-voltage protection (OVP), designed for USB PD 3.0 fast role swap and hot-swap applications. It supports 3.0–5.5V input, features 40mΩ R_DS(on), 2.1ms soft-start rise time, and auto-recovery fault protection including OVP, over-current, short-circuit, and over-temperature.

For engineers reviewing the AP22815AWT-EVM datasheet, AP22815AWT-EVM pinout, AP22815AWT-EVM application, or AP22815AWT-EVM equivalent, this EVM enables rapid validation of load-switch behavior under USB PD fast role swap (110µs recovery), current-limit accuracy, flag reporting timing, and robustness against heavy capacitive loads and short circuits.

Technical Context

The AP22815AWT-EVM implements a fully populated reference design for the AP22815 high-side power switch in TSOT25 package, with active-high enable, fixed 3A current limit, and integrated discharge circuitry on the OUT pin. It includes 1µF input capacitor, 0.1µF bypass, and 100µF bulk output capacitance to emulate real-world USB/SSD load conditions.

All critical signals-IN, OUT, EN, FLG, and GND-are routed to test points for oscilloscope probing and load control. The board supports both resistive and adjustable-current loads, and incorporates a 10kΩ pull-up on EN and no ISET resistor (confirming fixed-current configuration), matching AP22815's architecture versus the adjustable AP22615.

Key Specifications

Availability

AP22815AWT-EVM is available at Aetrix Electronics and suitable for USB PD3.0 validation, SSD power sequencing, and ultrabook load-switch qualification requiring stable component supply and repeatable lab verification.

Supply support for AP22815AWT-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 consumer, computing, and industrial markets.

The AP22815AWT-EVM belongs to Diodes' load switch evaluation platform family, engineered to accelerate design-in of high-reliability, USB-compliant power distribution switches with integrated OVP and fast role swap capability.

FAQ

What is the primary function of the AP22815AWT-EVM?

The AP22815AWT-EVM is a ready-to-use evaluation board that demonstrates the electrical performance and protection features of the AP22815 high-side power switch. It enables engineers to verify current limiting accuracy, OVP response, FLG reporting timing, soft-start behavior, and fast role swap recovery without designing custom PCBs.

Does the AP22815AWT-EVM support adjustable current limiting?

No. The AP22815AWT-EVM is configured for the AP22815 device, which has a fixed 3A current limit. Adjustable current limiting (0.4A–4.0A) is exclusive to the AP22615 variant and requires an external ISET resistor-absent on this board, as confirmed by its BOM and schematic showing NC on R2 and no ISET connection.

How is USB PD3.0 fast role swap validated using this EVM?

The EVM validates fast role swap by measuring output voltage recovery time after a controlled polarity reversal event. With 100µF output capacitance and the AP22815's internal OVP auto-recovery circuit, the board achieves ≤110µs return to valid USB voltage range (4.75–5.25V), meeting PD3.0 specification requirements.

Can the AP22815AWT-EVM be used with AP22615 devices?

No. The AP22815AWT-EVM uses the TSOT25 footprint and is populated with components optimized for the AP22815's fixed-current architecture and active-high enable logic. AP22615 variants require TSOT26 packaging and include an ISET resistor; attempting substitution would result in incorrect pin alignment and missing functionality.