Diodes Incorporated AP62300Z6-EVM

Overview

AP62300Z6-EVM from Diodes Incorporated is an evaluation module for the AP62300 synchronous buck converter IC, designed to demonstrate 4.2V–18V input to 0.8V–7V adjustable output at up to 3A continuous current using a 3.3μH inductor and optimized passive layout. It implements Constant On-Time (COT) control with 750kHz nominal switching frequency, proprietary ringing-free gate drive for EMI reduction, and supports PFM mode for 155μA quiescent current at light load. The board validates performance in FPGA/DSP point-of-load and 5V/12V distributed power bus applications.

For engineers reviewing the AP62300Z6-EVM datasheet, AP62300Z6-EVM pinout, AP62300Z6-EVM application, or AP62300Z6-EVM equivalent, this page provides verified functional context, measured efficiency curves (up to 95% at 3A), thermal shutdown behavior (+160°C), EN-controlled soft-start (2.5ms), and EMI-optimized SW node waveform validation - all critical for rapid DC-DC design validation and power rail sequencing.

Technical Context

The AP62300Z6-EVM implements the AP62300 IC in TSOT26 package with integrated 75mΩ high-side and 45mΩ low-side MOSFETs, enabling full COT-based regulation without external compensation. Its layout features minimized SW loop area, dedicated BST capacitor placement (100nF ceramic), and GND plane partitioning to validate the IC's proprietary gate driver scheme that suppresses switching-node ringing while preserving <90ns turn-on and <220ns turn-off times.

It supports precise output voltage setting via FB resistive divider (0.8V ±1% reference), EN logic-level control (1.2V threshold), and monitors real-time protection events including cycle-by-cycle valley current limit (3.7A typ), UVLO (3.6V falling), and thermal shutdown (+160°C with +20°C hysteresis).

Key Specifications

Availability

AP62300Z6-EVM is available at Aetrix Electronics and suitable for FPGA power delivery, consumer audio DC-DC conversion, and network system point-of-load regulation requiring stable component supply, fast design iteration, and production-ready layout validation.

Supply support for AP62300Z6-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, consumer, and automotive markets.

The AP62300 series belongs to Diodes' high-efficiency synchronous buck converter product line, engineered specifically for EMI-sensitive, space-constrained point-of-load applications where low IQ, fast transient response, and layout-insensitive stability are mandatory.

FAQ

What input and output capacitors are populated on the AP62300Z6-EVM?

The AP62300Z6-EVM uses a 10μF X5R 25V input capacitor (C1) and two parallel 22μF X5R 10V output capacitors (C2, C6) placed adjacent to the IC's VIN, SW, and GND pins. These values are optimized for 750kHz operation and validated to maintain <20mVpp output ripple at 3A load per Figure 20 in DS41958 Rev. 4-2.

Does the AP62300Z6-EVM support adjustable output voltage, and how is it set?

Yes - output voltage is adjusted via the FB resistive divider (R1/R2). With the default 0.8V reference, a 100kΩ top resistor (R1) and 20kΩ bottom resistor (R2) yield 4.8V output. The board includes test points for R1/R2 nodes and supports 0.8V–7V range; full calculation guidance is provided in Section 8.2 of DS41958.

Can the AP62300Z6-EVM be used for automotive qualification testing?

No - the AP62300Z6-EVM is a general-purpose evaluation platform based on the commercial-grade AP62300 IC. For AEC-Q100 qualified designs, Diodes offers the AP62300Q variant and corresponding automotive-grade EVKs; contact Diodes technical support for PPAP-capable documentation and IATF 16949 manufacturing evidence.

How is thermal performance validated on the AP62300Z6-EVM?

Thermal performance is verified using IR imaging per JEDEC JESD51-1: junction temperature remains ≤115°C at 3A/12V_IN/5V_OUT with 200LFM airflow, confirming safe operation within the IC's –40°C to +125°C junction range. The board's 2oz copper GND plane and exposed pad soldering meet the θ_JA = 70°C/W spec for TSOT26 package.