Diodes Incorporated AP64202QSP-EVM

Overview

AP64202QSP-EVM from Diodes Incorporated is an automotive-grade evaluation module for the AP64202Q synchronous buck converter IC, enabling rapid validation of a 3.8V–40V input, 2A output DC-DC power stage with integrated 150mΩ/80mΩ MOSFETs, internal compensation, and EMI-optimized switching in SO-8EP packaging. It supports adjustable 100kHz–2.2MHz frequency, FSS, soft-start, and precision enable control for automotive infotainment and ADAS power rails.

For engineers reviewing the AP64202QSP-EVM datasheet, AP64202QSP-EVM pinout, AP64202QSP-EVM application, or AP64202QSP-EVM equivalent, this module delivers verified layout, thermal performance, and transient response data for AEC-Q100-compliant 12V/24V automotive systems requiring stable 3.3V/5V outputs with <1% FB reference accuracy and <25μA quiescent current in PFM mode.

Technical Context

The AP64202QSP-EVM implements peak current mode control with integrated loop compensation, eliminating external Type-II/III compensation networks. Its on-board AP64202Q IC uses a proprietary multi-level gate driver to suppress SW node ringing while preserving fast rise/fall times, directly reducing high-frequency radiated EMI.

FSS modulation (±6% frequency jitter) spreads spectral energy across a 100kHz–2.2MHz band, lowering peak conducted emissions. The board supports external clock synchronization, adjustable soft-start via CSS, and UVLO threshold tuning through EN pin resistor dividers - all validated per IATF 16949 production processes.

Key Specifications

Availability

AP64202QSP-EVM is available at Aetrix Electronics and suitable for automotive infotainment head units, instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply, pre-validated EMI performance, and AEC-Q100-compliant design-in support.

Supply support for AP64202QSP-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 AP64202Q product line delivers automotive-qualified synchronous buck converters with integrated MOSFETs, internal compensation, and EMI-hardened gate drivers - designed specifically for demanding 12V/24V vehicle subsystems where space, thermal, and EMC constraints limit discrete power stage options.

FAQ

What input voltage transients can the AP64202QSP-EVM withstand during automotive cold-crank and load-dump events?

The AP64202QSP-EVM supports input voltages up to +45V for 400ms (per absolute max rating), covering ISO 7637-2 Pulse 5a load-dump surges. Its AP64202Q IC features undervoltage lockout (UVLO) that disables operation below 3.1V, ensuring reliable startup during cold-crank down to 6V while maintaining regulation stability across the full 3.8V–40V operating range.

Does the AP64202QSP-EVM include layout guidance for meeting CISPR 25 Class 5 radiated emissions limits?

Yes - the AP64202QSP-EVM PCB follows Diodes' optimized layout guidelines: minimized high-di/dt SW loop area (<25mm²), solid thermal pad connection to inner ground planes, dedicated GND pour under BST capacitor, and strategic placement of input/output capacitors. These practices, combined with the IC's ringing-free gate drive and ±6% FSS, enable compliance with CISPR 25 Class 5 limits without additional filtering components.

Can the AP64202QSP-EVM be used to evaluate dynamic load transient response for ADAS camera power rails?

Yes - the board supports fast load steps from 50mA to 2A (Figure 20 in DS43578), with measured VOUT undershoot/overshoot <±120mV and recovery time <40μs. This validates suitability for image sensor power supplies requiring tight regulation during frame-rate switching or LED flash activation in automotive vision systems.

Is the AP64202QSP-EVM compatible with external clock synchronization for system-level timing alignment?

Yes - the RT/CLK pin on the AP64202QSP-EVM accepts external clock signals from 100kHz to 2.2MHz, allowing synchronization with master timing sources (e.g., SoC clocks or other DC-DC converters) to eliminate beat frequencies and reduce system-level EMI. The internal PLL locks within one cycle, and automatic fallback to resistor-set frequency occurs if the external clock stops.