Diodes Incorporated AP22615BWU-EVM

Overview

AP22615BWU-EVM from Diodes Incorporated is an evaluation module for the AP22615, a 3A adjustable-current-limit high-side power switch in TSOT26 package, featuring output over-voltage protection, fast role swap support (USB PD3.0), 40mΩ R_DS(on), and 2.1ms soft-start rise time-designed for USB power delivery and hot-swap applications in ultrabooks and SSDs.

For engineers reviewing the AP22615BWU-EVM datasheet, AP22615BWU-EVM pinout, AP22615BWU-EVM application, or AP22615BWU-EVM equivalent, this EVM enables rapid validation of current limiting accuracy (0.4–4.0A via RLIM), fault reporting timing (7ms FLG deglitch), OVP recovery (<110µs), and thermal robustness under heavy capacitive loads.

Technical Context

The AP22615BWU-EVM implements the AP22615 device in active-low enable configuration with 6.8kΩ ISET resistor, enabling precise 3A current limit at 5V input. It integrates all passive components-including 1µF input MLCC, 0.1µF bypass, and 100µF bulk output capacitor-for immediate functional testing without external parts.

Board-level design supports direct connection to +5V supply and resistive/adjustable load, with test points on IN, OUT, GND, EN, and FLG. The TSOT26-mounted IC provides reverse current blocking, auto-recovery OVP/OCP/OTP, and controlled turn-on via internal soft-start circuitry.

Key Specifications

Availability

AP22615BWU-EVM is available at Aetrix Electronics and suitable for USB PD3.0 validation, high-side load switch qualification, and hot-swap protection testing requiring stable component supply and pre-validated reference design.

Supply support for AP22615BWU-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 AP22615 belongs to Diodes' high-side load switch product line, engineered specifically for USB-compliant hot-swap and fast-role-swap applications demanding precision current limiting, integrated OVP, and robust fault recovery.

FAQ

What is the purpose of the 6.8kΩ resistor on the AP22615BWU-EVM?

The 6.8kΩ resistor connects to the ISET pin and sets the current limit threshold to approximately 3.0A at 5V input. This value is selected per the AP22615's I_LIM = 12.5V / R_LIM formula, enabling accurate validation of adjustable current limiting without external calibration.

How do I verify over-voltage protection behavior using this EVM?

Apply a step over-voltage (e.g., 24V) to the OUT terminal while monitoring FLG with an oscilloscope. The device will assert FLG low within microseconds and auto-recover once VOUT drops below the OVP threshold (typically 6.2V), with full recovery to valid USB voltage (<5.5V) completed in under 110µs.

Can the AP22615BWU-EVM be used to evaluate active-high enable variants?

No - the AP22615BWU-EVM is configured exclusively for active-low enable (EN logic low activates switch). To evaluate active-high operation, use the AP22615AWU-EVM variant, which routes EN directly to a pull-up configuration and omits the jumper-based inversion.

Does the EVM include thermal monitoring capability?

The EVM does not integrate temperature sensors, but its layout exposes the TSOT26 package's thermal pad and provides GND plane access for IR thermography or thermocouple attachment. Junction temperature can be estimated using R_ΘJA = 80°C/W and measured power dissipation (I² × 40mΩ).