Monolithic Power Systems Inc. PKT-MEZDPD4506A

Overview

PKT-MEZDPD4506A from Monolithic Power Systems is an evaluation kit for the mEZDPD4506A programmable DC/DC buck module, supporting 4–45V input, 0.6–22V output (default 3.3V), up to 6A continuous current, and 600kHz switching frequency. It includes the EVmEZDPD4506A-00A evaluation board, one pre-configured mEZDPD4506A-0000 module, EVKT-USBI2C-02 USB-to-I²C interface, and Tdrive-mEZDPD4506A USB thumb drive with Virtual Bench Pro 2.2 GUI software - enabling full digital configuration of voltage, current limit, frequency, and protection modes in lab or design validation environments.

For engineers reviewing the PKT-MEZDPD4506A datasheet, PKT-MEZDPD4506A pinout, PKT-MEZDPD4506A application, or PKT-MEZDPD4506A equivalent, this kit delivers verified hardware-software integration for rapid prototyping of digitally programmable 45V/6A power rails in industrial control, test equipment, and FPGA/ASIC auxiliary supplies - with I²C-based real-time parameter tuning and comprehensive fault logging via Virtual Bench Pro.

Technical Context

The PKT-MEZDPD4506A is a complete evaluation system built around the mEZDPD4506A module - a fully integrated, digitally programmable buck converter with embedded multiple-time programmable memory and internal compensation. It implements closed-loop regulation using I²C-accessible registers to configure output voltage, switching frequency (600kHz typical), overcurrent threshold, soft-start time, and protection behaviors including SCP, OVP, UVP, and thermal shutdown.

Hardware interaction occurs via the EVmEZDPD4506A-00A board's dedicated mEZDPD4506A socket, SDA/SCL headers, and VIN/VOUT terminals. The included EVKT-USBI2C-02 dongle bridges PC USB to I²C, enabling GUI-driven register-level control without external logic analyzers or custom firmware - essential for validating dynamic load response, line/load regulation, and startup sequencing per JEDEC JESD78 and IEC 61000-4-5 compliance testing.

Key Specifications

Availability

PKT-MEZDPD4506A is available at Aetrix Electronics and suitable for industrial automation, semiconductor test equipment, and FPGA development platforms requiring stable component supply, rapid power architecture validation, and digital PMBus-like configurability without custom firmware investment.

Supply support for PKT-MEZDPD4506A 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 and modules, with core expertise in DC/DC conversion, motor drivers, and LED lighting controllers - serving industrial, telecom, automotive, and consumer markets since 1997.

The mEZDPD series targets engineers needing plug-and-play, digitally programmable power solutions - eliminating manual resistor selection and analog compensation while delivering production-grade performance in evaluation form factors.

FAQ

Is the PKT-MEZDPD4506A still in production?

No - the PKT-MEZDPD4506A and its underlying mEZDPD4506A module are marked End-of-Life (EOL) per the official revision 1.0 document dated February 2019. MPS no longer manufactures or sells new units, though limited legacy stock may be available through authorized distributors. Design-in for new projects is not recommended.

What hardware is required to operate the PKT-MEZDPD4506A?

The kit requires only a Windows PC with Virtual Bench Pro 2.2 installed, the included EVKT-USBI2C-02 USB-to-I²C dongle, a 4–45V DC input source, and a load connected to VOUT/GND terminals. No additional programming hardware, debug probes, or external microcontrollers are needed - all configuration is GUI-driven via I²C.

Can output voltage be set below 1.0V?

Yes - the mEZDPD4506A supports output voltages down to 0.6V with 10mV resolution. This is confirmed in the Performance Summary table and validated across load conditions (0–6A) at 25°C ambient. Operation below 1.0V requires appropriate output capacitor selection per the BOM notes for VOUT < 3.3V.

Does the kit support remote sensing?

Yes - the EVmEZDPD4506A-00A board provides dedicated VOUTSEN+ and VOUTSEN− terminals adjacent to the output pads, enabling Kelvin sensing to compensate for PCB trace resistance and maintain tight regulation under high-current loads.

What protections are implemented and how are they configured?

The mEZDPD4506A integrates overvoltage (OVP), undervoltage (UVP), overcurrent (OCP), and thermal shutdown protections - all configurable via I²C registers. For example, OCP threshold can be set from 3A to 7A in 0.5A steps, and fault response (latch-off vs. auto-retry) is user-selectable in the GUI under "Protection Settings."

Is the 18.8mm × 18.8mm footprint of the mEZDPD4506A module compatible with standard PCB assembly processes?

Yes - the mEZDPD4506A uses a QFN-style land pattern with exposed thermal pad and 0.5mm pitch, fully compatible with standard reflow soldering profiles and automated optical inspection (AOI). The EVmEZDPD4506A-00A board's socket allows manual module insertion and removal without soldering, simplifying evaluation and failure analysis.