Monolithic Power Systems Inc. MEZDPD4506A-8534

Overview

MEZDPD4506A-8534 from Monolithic Power Systems is an end-of-life evaluation board for the mEZDPD4506A programmable 45V input, 6A buck DC/DC power module. It implements a digitally configurable synchronous buck converter with I²C interface, 0.6–22V output voltage range (default 3.3V), 600kHz switching frequency, and up to 94.4% peak efficiency at 24V_IN/12V_OUT. Used with Virtual Bench Pro 2.2 GUI for real-time parameter tuning in lab power validation.

For engineers reviewing the MEZDPD4506A-8534 datasheet, MEZDPD4506A-8534 pinout, MEZDPD4506A-8534 application, or MEZDPD4506A-8534 equivalent, this board enables rapid characterization of digital PMBus-like control features-including output voltage, current limit, switching frequency, soft-start, and protection modes-without custom firmware development.

Technical Context

The MEZDPD4506A-8534 hosts the mEZDPD4506A module-a fully integrated, digitally programmable buck converter with embedded multiple-time programmable memory and internal compensation. It supports I²C-based register access for full configuration of regulation parameters and fault responses.

It operates across 4–45V input, delivers 0–6A continuous output with ±0.5% load/line regulation, and integrates thermal shutdown, overcurrent protection (SCP), and power-good signaling. The board provides direct access to VIN, VOUT, SDA, SCL, EN, and PG pins for system-level integration testing.

Key Specifications

Availability

MEZDPD4506A-8534 is available at Aetrix Electronics and suitable for DC/DC converter evaluation, power management IC validation, and digital power supply design requiring stable component supply during legacy system support and obsolescence transition planning.

Supply support for MEZDPD4506A-8534 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, including DC/DC converters, LED drivers, and motor drivers, with design centers in the US, China, and Taiwan.

The mEZDPD series targets engineers needing plug-and-play digital power modules with GUI-driven configuration-reducing design cycle time for programmable power supplies in test equipment, FPGA/ASIC power domains, and industrial control systems.

FAQ

Is MEZDPD4506A-8534 still in production?

No. MEZDPD4506A-8534 is marked End-of-Life per MPS documentation (Rev. 1.0, Feb 2019). Aetrix Electronics holds limited legacy stock for continuity support but does not offer new production builds or long-term supply commitments.

What software is required to configure the board?

Virtual Bench Pro 2.2 GUI is mandatory. It runs on Windows, communicates via USB-to-I²C dongle (EVKT-USBI2C-02), and provides full register-level access to output voltage, current limit, switching frequency, soft-start time, and protection thresholds.

Does the board include the mEZDPD4506A module?

No. The MEZDPD4506A-8534 is the bare evaluation board only. The mEZDPD4506A-0000 module must be manually socketed onto the board before use. Module ordering is separate and subject to same EOL status.

Can output voltage be set below 0.6V?

No. The mEZDPD4506A module's internal reference and DAC architecture limit programmable output to 0.6V minimum. This is a hard silicon constraint-not a GUI limitation-and cannot be overridden.

What are the critical external components needed for operation?

Required components include: input bulk capacitor (10µF × 8, 50V X5R, 1210), output capacitors (22µF × 2, 16V X5R, 1210), 4.7µH power inductor (7A saturation), and optional 100µF electrolytic for VOUT ≥12V. All values are specified in the official BOM.

Is there a replacement evaluation board for this EOL part?

MPS does not list a direct successor. Engineers should evaluate newer programmable modules such as MPQ4331-AEC1 (automotive-grade) or MPQ8633B (PMBus-compliant) with compatible evaluation platforms like EVKT-MPQ8633B, depending on voltage/current requirements.