Diodes Incorporated AP64060WU-EVM

Overview

AP64060WU-EVM from Diodes Incorporated is an evaluation module for the AP64060 4.5V–40V input, 600mA synchronous buck converter with integrated 600mΩ high-side and 300mΩ low-side MOSFETs, 2.2MHz switching frequency, <0.1% output ripple at 12V, and proprietary EMI-reduction gate driver. It supports PFM mode (90μA IQ), precision enable threshold (1.21V), and operates in automotive, white goods, and FPGA point-of-load applications.

For engineers reviewing the AP64060WU-EVM datasheet, AP64060WU-EVM pinout, AP64060WU-EVM application, or AP64060WU-EVM equivalent, this page delivers verified functional context, thermal derating curves, EN-programmable UVLO, OVP/OCP/TSD protection behavior, and layout-validated EMI performance metrics - all specific to the TSOT26-based evaluation platform.

Technical Context

The AP64060WU-EVM implements a fixed-frequency peak current mode control architecture with internal 2.2MHz oscillator, integrated loop compensation, and 1ms soft-start. Its reference design uses a 115kΩ/22.1kΩ feedback divider for 5V output, 2×10µF ceramic output capacitors, and 2.2µF input capacitance - optimized for minimal external component count and stable regulation across 4.5–40V input.

EMI reduction is achieved via a proprietary gate driver that suppresses switching node ringing without extending MOSFET turn-on/turn-off times, directly lowering high-frequency radiated emissions. Protection features include cycle-by-cycle peak current limit (0.8–1.3A), output overvoltage protection (10% trip), and thermal shutdown at 170°C with 35°C hysteresis.

Key Specifications

Availability

AP64060WU-EVM is available at Aetrix Electronics and suitable for automotive infotainment power sequencing, smart meter auxiliary rails, FPGA core voltage regulation, and industrial IoT sensor node DC-DC conversion requiring stable component supply and rapid prototyping validation.

Supply support for AP64060WU-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 industrial, automotive, and consumer markets.

The AP64060 product line targets high-reliability, EMI-sensitive point-of-load applications where wide-input-voltage capability, low quiescent current, and integrated protection are mandatory - especially in space-constrained designs using TSOT26 packaging.

FAQ

What is the purpose of the AP64060WU-EVM evaluation module?

The AP64060WU-EVM is a fully assembled and tested PCB designed to demonstrate and validate the performance of the AP64060 synchronous buck converter. It includes all recommended external components - input/output capacitors, feedback resistors, bootstrap capacitor, and inductor - enabling immediate bench testing of efficiency, transient response, EMI behavior, and protection features under real-world load and input conditions.

Can the AP64060WU-EVM be used to evaluate different output voltages?

Yes - the AP64060WU-EVM's feedback network uses 0603 footprints for R1 and R2, allowing easy resistor replacement to set output voltages from 0.8V to 26V. The board includes test points for FB, VOUT, SW, and EN, and supports optional C4 (10–220pF) for transient response tuning. Datasheet Table 1 provides validated resistor/inductor/capacitor combinations for 1.8V, 3.3V, 5V, and 12V outputs.

Does the AP64060WU-EVM support automotive-grade validation?

No - the AP64060WU-EVM evaluates the commercial-grade AP64060. For automotive qualification, Diodes offers the AP64060Q variant (AEC-Q100 Grade 1) with separate datasheet DS44124, and its corresponding evaluation module AP64060QWU-EVM. The AP64060WU-EVM operates across –40°C to +85°C ambient but lacks automotive-specific test reports, PPAP documentation, or extended temperature stress validation.

How is EMI performance verified on the AP64060WU-EVM?

EMI performance is verified using the AP64060WU-EVM's optimized layout: symmetric SW node routing, minimized high-di/dt loop area (<25mm²), dedicated GND plane under power stages, and 100nF BST-to-SW ceramic capacitor placement adjacent to the IC. Radiated emission tests per CISPR 25 show >10dB margin below Class 5 limits at 100MHz–1GHz when mounted on a standard 4-layer FR-4 test board with ferrite beads on input/output lines.