Diodes Incorporated AP64200QSP-EVM

Overview

AP64200QSP-EVM from Diodes Incorporated is an automotive-grade evaluation module for the AP64200Q 40V, 2A synchronous buck converter. It implements peak current mode control with adjustable 100kHz–2.2MHz switching frequency, integrated 150mΩ/80mΩ MOSFETs, and EMI-optimized gate drive + Frequency Spread Spectrum (±6% jitter). Designed for AEC-Q100 Grade 1 (-40°C to +125°C) validation in vehicle power systems.

For engineers reviewing the AP64200QSP-EVM datasheet, AP64200QSP-EVM pinout, AP64200QSP-EVM application, or AP64200QSP-EVM equivalent, this module enables rapid characterization of input voltage range (3.8–40V), output regulation (0.8–VIN), light-load PFM efficiency (88% @ 5mA), thermal shutdown (+160°C), and EN-controlled sequencing - critical for infotainment, instrument cluster, and ADAS power rail development.

Technical Context

The AP64200QSP-EVM hosts the AP64200Q IC in SO-8EP package and replicates its full functional block diagram: fixed-frequency peak current mode control with internal 0.8V ±1% reference, 2ms soft-start, and dual-mode frequency setting (RT resistor or external CLK synchronization). The board implements the recommended 10μH inductor, dual 22μF/10μF output capacitors, and 52.3kΩ/10kΩ FB divider for 5V output.

It validates key EMI mitigation features: proprietary ringing-free gate driver preserving fast SW slew rates, and ±6% FSS jitter reducing peak radiated emissions. Protection circuits - cycle-by-cycle OCP (2.5–4.5A), OVP (110% of 0.8V), UVLO (3.1–3.7V), and thermal shutdown - are fully operational and testable via onboard test points and jumpers.

Key Specifications

Availability

AP64200QSP-EVM is available at Aetrix Electronics and suitable for automotive infotainment system validation, instrument cluster power design, and ADAS domain controller DC-DC development requiring stable component supply and production-representative test platforms.

Supply support for AP64200QSP-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 high-performance analog and mixed-signal semiconductors, specializing in power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.

The AP64200Q product line delivers AEC-Q100 Grade 1 synchronous buck converters optimized for EMI-sensitive automotive subsystems - including telematics, lighting control, and camera modules - where wide VIN range, low quiescent current (25μA), and robust protection are mandatory.

FAQ

What is the primary purpose of the AP64200QSP-EVM?

The AP64200QSP-EVM is a fully assembled, tested evaluation board designed to accelerate development and validation of the AP64200Q 40V, 2A automotive synchronous buck converter. It provides immediate access to all critical signals - VIN, EN, SW, FB, COMP, RT/CLK - with solderable test points, jumper-selectable configurations, and thermal vias aligned to the SO-8EP exposed pad. Engineers use it to verify efficiency, transient response, EMI behavior, and protection functionality before custom PCB layout.

Can the AP64200QSP-EVM be used to evaluate different output voltages?

Yes. The board supports adjustable output voltage via the FB resistive divider. The default 52.3kΩ/10kΩ network sets VOUT = 5V, but replacing R1 and R2 allows precise configuration across the full 0.8V–VIN range. The COMP compensation network (R5/C5) is also accessible for loop stability tuning when changing output voltage or inductor value - enabling validation of 3.3V, 2.5V, or other rail requirements without hardware redesign.

Does the AP64200QSP-EVM include EMI measurement capability?

No built-in EMI measurement instrumentation is included, but the board is engineered for repeatable EMI testing: it features controlled impedance SW node routing, minimized high-di/dt loop area, dedicated ground planes under power components, and SMA-compatible test points for near-field probe coupling. Its layout follows Diodes' CISPR 25-compliant reference design guidelines, allowing direct correlation between lab measurements and final automotive system compliance reports.

Is the AP64200QSP-EVM compatible with external clock synchronization?

Yes. The RT/CLK pin is routed to a 0.1" header and supports direct connection of an external clock source (100kHz–2.2MHz). The board includes series termination and AC-coupling options to ensure clean clock injection without affecting internal oscillator lock-up behavior. This enables synchronization to system master clocks - essential for noise spectral management in multi-rail automotive ECUs and avoiding beat frequencies in clustered switching regulators.