Diodes Incorporated AP62300WU-EVM

Overview

AP62300WU-EVM from Diodes Incorporated is an evaluation module for the AP62300 synchronous buck converter IC, designed to demonstrate 4.2V–18V input to 0.8V–7V adjustable output conversion at up to 3A continuous current. It implements Constant On-Time (COT) control with proprietary EMI-optimized gate driving, integrated 75mΩ/45mΩ MOSFETs, and 155μA quiescent current in PFM mode-targeting FPGA, DSP, and consumer audio power rails.

For engineers reviewing the AP62300WU-EVM datasheet, AP62300WU-EVM pinout, AP62300WU-EVM application, or AP62300WU-EVM equivalent, this page delivers verified functional context, board-level design meaning, thermal and efficiency validation data, and direct comparison to production-grade AP62300/AP62301/AP62300T IC variants used in volume designs.

Technical Context

The AP62300WU-EVM implements the AP62300 IC in TSOT26 package with a 3.3μH power inductor, dual 22μF output capacitors, and 10μF input capacitor-configured per Figure 1 of DS41958 Rev. 4-2. It supports adjustable VOUT via external FB resistor divider and enables full characterization of COT transient response, light-load PFM efficiency (up to 83% @ 5mA), and EMI performance under real load conditions.

Board-level features include accessible SW, BST, EN, FB, VIN, and GND test points; no solder jumpers or configuration resistors; and layout optimized for minimal parasitic inductance. Thermal performance is validated per θJA = 70°C/W (TSOT26) with junction temperature monitoring capability during sustained 3A operation.

Key Specifications

Availability

AP62300WU-EVM is available at Aetrix Electronics and suitable for FPGA power sequencing, consumer audio DC-DC validation, and industrial point-of-load prototyping requiring stable component supply and documented thermal/efficiency benchmarks.

Supply support for AP62300WU-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 semiconductor manufacturer specializing in discrete, analog, and power management solutions, with ISO/TS 16949-certified manufacturing and AEC-Q qualified automotive products.

The AP62300WU-EVM belongs to Diodes' Power Management Evaluation Platform line, engineered to accelerate design-in of high-efficiency, low-EMI buck converters for consumer, computing, and industrial applications where fast transient response and light-load efficiency are critical.

FAQ

What is the primary function of the AP62300WU-EVM?

The AP62300WU-EVM is a fully assembled evaluation board for the AP62300 synchronous buck converter IC. It provides immediate hardware validation of 4.2V–18V input-to-adjustable-output DC-DC conversion, enabling engineers to measure efficiency, transient response, thermal behavior, and EMI performance without custom PCB design.

Does the AP62300WU-EVM support adjustable output voltage?

Yes. The board uses an external resistor divider on the FB pin to set output voltage between 0.8V and 7V, consistent with the AP62300 IC's 0.763V reference. Default configuration targets 5V output, but resistor values can be changed to validate other VOUT settings per the formula VOUT = 0.763V × (1 + R1/R2).

Can the AP62300WU-EVM be used for thermal testing under full load?

Yes. The board implements the TSOT26-packaged AP62300T with θJA = 70°C/W and includes thermal vias and copper pour aligned with the IC pad. Sustained 3A operation at 12V input has been validated to maintain TJ < 125°C with standard airflow, supporting thermal margin analysis for end-equipment layouts.

How does the AP62300WU-EVM differ from the AP62300 IC in production use?

The AP62300WU-EVM is a demonstration platform-not a production component. It integrates the AP62300T IC with optimized passive components (3.3μH inductor, 2×22μF output caps), test points, and layout practices that reflect Diodes' recommended design. Production designs require separate selection and placement of all passives per application requirements.