Diodes Incorporated AP64202SP-EVM

Overview

AP64202SP-EVM from Diodes Incorporated is an evaluation board for the AP64202 3.8V–40V input, 2A synchronous buck converter with integrated 150mΩ high-side and 80mΩ low-side MOSFETs, internal loop compensation, and EMI-optimized gate drive. It supports adjustable switching frequency (100kHz–2.2MHz), 0.8V ±1% reference, 25μA quiescent current in PFM mode, and FSS-based EMI reduction. Used to validate power delivery in industrial and consumer DC-DC designs.

For engineers reviewing the AP64202SP-EVM datasheet, AP64202SP-EVM pinout, AP64202SP-EVM application, or AP64202SP-EVM equivalent, this page delivers verified functional context, test-ready configuration details, thermal performance data, and direct mapping to the AP64202 IC's validated operating conditions and protection features - enabling rapid prototyping of 5V/3.3V point-of-load supplies.

Technical Context

The AP64202SP-EVM implements the AP64202 IC in SO-8EP package with full support for peak current mode control, external clock synchronization (100kHz–2.2MHz), and programmable soft-start via CSS capacitor. It validates the IC's proprietary ringing-free gate driver and ±6% Frequency Spread Spectrum (FSS) operation under real load transients and line variations.

Board-level design includes dual 10μF + dual 22μF output capacitance, 10μH power inductor, 52.3kΩ/10kΩ FB divider for 5V output, 200kΩ RT resistor for ~500kHz switching, and exposed-pad thermal management aligned with θJA = 45°C/W spec. All protections - UVLO (3.1V fall / 3.7V rise), OVP (1.1×0.8V), cycle-by-cycle OCP (2.5–4.5A), and thermal shutdown (+160°C) - are fully exercised.

Key Specifications

Availability

AP64202SP-EVM is available at Aetrix Electronics and suitable for industrial motor drives, network infrastructure power rails, white goods control modules, and consumer audio subsystems requiring stable component supply and fast-turn validation of wide-input buck converters.

Supply support for AP64202SP-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 company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and product compliance to AEC-Q100/101/200 standards.

The AP64202 product line targets high-reliability, EMI-sensitive DC-DC conversion in industrial, automotive, and consumer applications - emphasizing low IQ, internal compensation, and robust protection without external loop components.

FAQ

What input voltage range does the AP64202SP-EVM support?

The AP64202SP-EVM supports 3.8V to 40V DC input, matching the AP64202 IC's absolute rating and recommended operating range. It has been validated with 12V and 24V inputs delivering stable 5V/3.3V outputs at up to 2A, including transient response and thermal performance per DS43574 Rev. 1–2 test conditions.

Can the AP64202SP-EVM be synchronized to an external clock?

Yes - the AP64202SP-EVM exposes the RT/CLK pin, allowing direct connection to an external clock source from 100kHz to 2.2MHz. When external clock edges stop, the board automatically reverts to resistor-timed operation using the onboard 200kΩ RT resistor (~500kHz).

Does the board implement all AP64202 protection features?

Yes - the AP64202SP-EVM fully enables and demonstrates UVLO (3.1V/3.7V thresholds), output overvoltage protection (OVP at 0.88V FB), cycle-by-cycle overcurrent limit (2.5–4.5A), and thermal shutdown (+160°C). These are verified through load-step, short-circuit, and temperature sweep tests documented in the AP64202 datasheet.

How is EMI performance validated on this evaluation board?

EMI performance is validated using the AP64202's dual mitigation techniques: (1) proprietary multi-level gate driver that eliminates SW node ringing without degrading slew rates, and (2) ±6% Frequency Spread Spectrum (FSS) that spreads conducted/radiated noise energy. Board layout follows Diodes' EMI-optimized guidelines, including minimized SW loop area and grounded thermal pad.