Diodes Incorporated AP63200WU-EVM

Overview

AP63200WU-EVM from Diodes Incorporated is an evaluation board for the AP63200 synchronous buck converter IC, designed to demonstrate 3.8V–32V input to 1.8V–12V programmable output at up to 2A continuous current. It implements Frequency Spread Spectrum (±6% jitter) and a proprietary gate driver to reduce radiated EMI, and ships configured for 5V output using TSOT26-packaged AP63200 IC with integrated 125mΩ/68mΩ MOSFETs.

For engineers reviewing the AP63200WU-EVM datasheet, AP63200WU-EVM pinout, AP63200WU-EVM application, or AP63200WU-EVM equivalent, this board enables rapid validation of efficiency (e.g., >90% at 12V_IN/5V_OUT/2A), output ripple (<20mV_AC), thermal performance under load, and EMI compliance in 12V/24V distributed power, consumer audio, and FPGA supply designs.

Technical Context

The AP63200WU-EVM implements a fixed-frequency (500kHz) peak-current-mode synchronous buck topology with integrated loop compensation and external resistor-divider feedback. It supports both PFM (22µA I_Q) and PWM modes, enabling high light-load efficiency and stable full-load regulation.

EMI reduction is achieved via two hardware-level techniques: Frequency Spread Spectrum modulation (±6% switching frequency jitter) and a proprietary gate driver that suppresses switch-node ringing without extending turn-on/turn-off times-directly targeting high-frequency radiated noise sources above 30MHz.

Key Specifications

Availability

AP63200WU-EVM is available at Aetrix Electronics and suitable for FPGA power delivery, consumer audio DC/DC conversion, and 24V industrial bus step-down applications requiring stable component supply, fast design-in cycles, and validated EMI performance.

Supply support for AP63200WU-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, computing, and consumer markets.

The AP63200 belongs to Diodes' high-efficiency synchronous buck converter product line, engineered specifically for EMI-sensitive applications in flat-panel displays, network systems, and home entertainment equipment where low radiated noise and small solution size are critical.

FAQ

What input voltage range does the AP63200WU-EVM support?

The AP63200WU-EVM supports 3.8V to 32V DC input, matching the AP63200 IC's operating range. It is validated for 12V and 24V bus operation, with absolute maximum rating of +35V DC and +40V for 400ms transients per datasheet Absolute Maximum Ratings.

How is output voltage set on the AP63200WU-EVM?

Output voltage is set externally using resistor divider R1 (30kΩ) and R3 (157kΩ) for the default 5V configuration. The formula V_OUT = 0.8V × (1 + R3/R1) applies, and 1% tolerance resistors are required for ±1% output accuracy per design guidelines.

Does the AP63200WU-EVM include EMI-reduction circuitry beyond the IC?

No-the EMI reduction is implemented entirely within the AP63200 IC via Frequency Spread Spectrum and proprietary gate drive. The EVM's layout follows strict high-frequency routing rules (short SW/GND loops, minimized parasitic inductance) to preserve those features but adds no additional filtering components.

Can the AP63200WU-EVM be used for 12V output?

Yes-replacing R1 with 18kΩ and R3 with 249kΩ configures the board for 12V output, as specified in Table 1 of the user guide. The board's 15µH inductor (Würth 7447709150) and four 22µF output capacitors support stable operation at 12V/2A with verified thermal margin.