Diodes Incorporated AP61062QZ6-EVM

Overview

AP61062QZ6-EVM from Diodes Incorporated is an automotive-compliant evaluation module for the AP61062Q 600mA synchronous buck converter, supporting 2.3V–5.5V input and 0.6V–5.5V programmable output. It integrates 120mΩ high-side and 80mΩ low-side MOSFETs, operates at 2.2MHz, delivers 14µA quiescent current in PFM mode, and features COT control with force-PWM capability via EN pin. The board is configured for 1.8V output and targets point-of-load regulation in network cameras and automotive infotainment.

For engineers reviewing the AP61062QZ6-EVM datasheet, AP61062QZ6-EVM pinout, AP61062QZ6-EVM application, or AP61062QZ6-EVM equivalent, this EVM enables rapid validation of transient response, efficiency across load (0.001–0.6A), UVLO/OVP protection behavior, and EN-controlled modulation mode switching under automotive temperature range (−40°C to +125°C).

Technical Context

The AP61062QZ6-EVM implements a constant-on-time (COT) control architecture with internal 0.6V ±2% reference, enabling fast load-step response and stable loop performance without external compensation. Its functional block includes integrated soft-start, thermal shutdown, valley/peak current limiting, and VIN overvoltage protection.

Modulation mode is selected by EN pin voltage relative to VIN: PFM activates when VIN–VEN < 200mV; forced PWM engages when VIN–VEN > 200mV-ensuring consistent switching frequency regardless of load. Power Good (PG) output provides open-drain status indication with 5MΩ internal pull-down.

Key Specifications

Availability

AP61062QZ6-EVM is available at Aetrix Electronics and suitable for automotive infotainment power design, network video camera PoL conversion, and FPGA/DSP supply validation requiring stable component supply and AEC-Q100-aligned reference hardware.

Supply support for AP61062QZ6-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 automotive, industrial, and consumer markets.

The AP61062Q product line delivers ultra-low-IQ synchronous buck converters optimized for automotive body electronics and ADAS subsystems where wide VIN range, high efficiency at light load, and AEC-Q100 compliance are mandatory.

FAQ

What input voltage range does the AP61062QZ6-EVM support?

The AP61062QZ6-EVM supports 2.3V to 5.5V DC input, matching the AP61062Q IC's operational range. It is designed for direct connection to automotive 5V rails or USB-powered test benches. Absolute maximum input is 6.5V DC or 7.0V for ≤400ms transients per datasheet ratings.

How is output voltage set on this evaluation board?

The AP61062QZ6-EVM is pre-configured for 1.8V output using R1 = 200kΩ and R2 = 100kΩ (1% tolerance), per the formula VOUT = 0.6V × (1 + R1/R2). Test points allow reconfiguration for other voltages within 0.6V–5.5V by replacing R1/R2 with values from Table 1 in the datasheet.

Does the EVM support both PFM and forced PWM modes?

Yes-the AP61062QZ6-EVM supports both modes via the EN pin. A jumper at "H" applies VIN to EN, enabling forced PWM regardless of load. At "L", EN is grounded, activating PFM for ultralow IQ operation below ~10mA. Mode transition occurs at VIN–VEN = 200mV threshold.

What protections are implemented and how are they verified?

The EVM demonstrates UVLO (2.1V typ.), VIN OVP (6.2V typ.), thermal shutdown (>150°C junction), and current limiting (peak ~1.5A, valley ~0.3A). These are validated using oscilloscope monitoring of SW, PG, and FB pins during step-load, overvoltage, and hot-plate stress tests per Diodes' recommended procedures.