Diodes Incorporated AP64102QSP-EVM

Overview

AP64102QSP-EVM from Diodes Incorporated is an automotive-grade evaluation module for the AP64102Q 40V, 1A synchronous buck converter. It implements peak current mode control with internal compensation, supports 3.8–40V input, delivers adjustable 0.8–VIN output, and integrates 150mΩ/80mΩ MOSFETs in SO-8EP. Designed for EMI-sensitive automotive power systems including instrument clusters and telematics.

For engineers reviewing the AP64102QSP-EVM datasheet, AP64102QSP-EVM pinout, AP64102QSP-EVM application, or AP64102QSP-EVM equivalent, this page provides verified functional context, validated test circuit configuration, thermal performance data under AEC-Q100 Grade 1 conditions (−40°C to +125°C), and direct mapping to the AP64102Q IC's switching node behavior, soft-start timing, and FSS-enabled EMI reduction.

Technical Context

The AP64102QSP-EVM implements the AP64102Q IC in a fully assembled, tested SO-8EP layout with optimized PCB grounding, thermal pad connection, and EMI-suppressed routing. It replicates the reference design in Figure 1 of DS43576 Rev. 1–2, including 2×10µF input capacitors, 15µH shielded inductor, 22µF output capacitor, and 52.3kΩ/10kΩ feedback divider for 5V output.

It validates key IC behaviors: proprietary gate driver operation (ringing-free SW node), Frequency Spread Spectrum (±6% jitter), adjustable soft-start (10nF CSS = 3ms), and precision enable threshold (1.18V EN_H). All protection features - OVP (1.1×0.8V), cycle-by-cycle OCP (1.5–3.5A), and thermal shutdown (+160°C) - are observable on the board via oscilloscope measurements.

Key Specifications

Availability

AP64102QSP-EVM is available at Aetrix Electronics and suitable for automotive infotainment system validation, instrument cluster power rail qualification, and ADAS subsystem EMI compliance testing requiring stable component supply and traceable reference design implementation.

Supply support for AP64102QSP-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 high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.

The AP64102Q product line targets automotive power conversion applications demanding AEC-Q100 Grade 1 qualification, low quiescent current (25μA), and integrated EMI mitigation - specifically for replacing legacy buck controllers in space-constrained, noise-sensitive ECUs.

FAQ

What is the primary function of the AP64102QSP-EVM?

The AP64102QSP-EVM is a fully assembled evaluation platform for the AP64102Q synchronous buck converter IC. It enables engineers to validate input/output voltage regulation, efficiency curves, EMI performance, soft-start behavior, and protection features - including OVP, thermal shutdown, and UVLO - using the exact SO-8EP layout and component values specified in Diodes' DS43576 Rev. 1–2.

Does the AP64102QSP-EVM support external clock synchronization?

Yes. The RT/CLK pin on the AP64102QSP-EVM is accessible and configured to accept external clock signals from 100kHz to 2.2MHz. When an external clock is applied, the onboard AP64102Q automatically synchronizes its switching frequency via internal PLL, enabling deterministic timing alignment across multiple rails in automotive domain controllers.

How is thermal performance validated on this evaluation board?

Thermal performance is validated through the SO-8EP package's exposed pad, which is soldered directly to a 4-layer FR-4 PCB with 2oz copper ground plane per Diodes' recommended layout. Measured θJA is 45°C/W, and thermal shutdown triggers at +160°C junction temperature - observable via SW node voltage collapse and output dropout during sustained 1A load at +125°C ambient.

Can the output voltage be reconfigured on the AP64102QSP-EVM?

Yes. The feedback resistor divider (R1/R2) is populated with 0603 footprints and unpopulated alternatives, allowing field reconfiguration of VOUT from 0.8V to VIN. For example, replacing R1=52.3kΩ and R2=10kΩ yields 5V; changing to R1=30.1kΩ and R2=10kΩ sets 3.3V output - maintaining ±1% regulation accuracy due to the 0.8V ±1% internal reference.