Diodes Incorporated AP63201QWU-EVM

Overview

AP63201QWU-EVM from Diodes Incorporated is an evaluation board for the AP63201Q 32V, 2A synchronous buck converter featuring integrated 125mΩ high-side and 68mΩ low-side MOSFETs, 500kHz fixed switching frequency, 0.8V ±1% reference voltage, and proprietary EMI-reduction gate driver architecture. It supports input voltages from 3.8V to 32V and delivers stable 5V output at up to 2A for power supply validation in industrial control and automotive infotainment subsystems.

For engineers reviewing the AP63201QWU-EVM datasheet, AP63201QWU-EVM pinout, AP63201QWU-EVM application, or AP63201QWU-EVM equivalent, this board enables rapid characterization of efficiency, output ripple, thermal behavior, and EMI performance under real load conditions with configurable feedback divider and feed-forward capacitor networks.

Technical Context

The AP63201QWU-EVM implements peak current mode control with fully integrated compensation (18kΩ resistor + 7.6nF capacitor), enabling stable operation without external loop tuning. Its layout prioritizes minimized high-di/dt loop area and optimized ground plane partitioning to suppress radiated emissions.

The board supports LDO mode operation below dropout and features precision enable threshold adjustment via external resistor network to fine-tune UVLO hysteresis. All protection functions - cycle-by-cycle current limiting, thermal shutdown, and undervoltage lockout - are directly accessible and testable on the board.

Key Specifications

Availability

AP63201QWU-EVM is available at Aetrix Electronics and suitable for industrial motor drives, automotive ADAS camera modules, IoT edge node power rails, and medical portable device DC-DC validation requiring stable component supply and fast-turn evaluation support.

Supply support for AP63201QWU-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 AP63201Q product line targets high-reliability, low-EMI DC-DC conversion in space-constrained applications where board-level noise compliance and thermal robustness are critical design requirements.

FAQ

What input voltage range is supported by the AP63201QWU-EVM?

The board is configured for 12V input during quick-start testing but supports the full AP63201Q operating range: 3.8V to 32V DC. Input terminals accept standard banana jacks or solder pads, and the onboard input capacitor network (C1/C2/C3) is rated for 50V with 10µF + 0.1µF parallel staging to maintain low impedance across 10Hz–10MHz.

How do I configure the output voltage on the AP63201QWU-EVM?

Output voltage is set using the R1 (30kΩ) and R3 (158kΩ) feedback divider per the formula VOUT = 0.8 × (1 + R3/R1). For 5V output, these values yield 4.99V nominal. To change VOUT, replace R3 with a value calculated from the same equation; 1% tolerance resistors are required for ±1% output accuracy as specified in the datasheet.

Does the AP63201QWU-EVM include EMI measurement features?

No dedicated EMI test ports are included, but the board provides direct access to SW, VIN, VOUT, EN, and FB nodes via labeled test points. Its optimized layout-short high-current paths, split ground planes, and controlled switch-node copper area-enables repeatable near-field probe scans and conducted emission testing per CISPR 25 Class 5 when used with proper lab fixtures and grounding practices.

Can the AP63201QWU-EVM be used for thermal performance evaluation?

Yes. The AP63201Q IC is mounted on a thermally enhanced pad in the TSOT26 package and soldered to a 2-layer PCB with internal copper pours connected to the exposed pad. Thermal vias beneath the IC pad transfer heat to inner layers and bottom-side copper, allowing junction temperature estimation via measured case temperature and published θJC (15°C/W) and θJA (65°C/W) values under defined airflow conditions.