Monolithic Power Systems Inc. MEZDPD4506AS-84F3

Overview

MEZDPD4506AS-84F3 from Monolithic Power Systems is an end-of-life evaluation board (EVmEZDPD4506A-00A) for the mEZDPD4506A programmable DC/DC buck module, supporting 4–45V input, 0.6–22V digitally adjustable output, and continuous 6A load capability. It integrates I²C interface, GUI-based configuration via Virtual Bench Pro 2.2, and comprehensive protection modes including SCP, OVP, UVP, and thermal shutdown - used for rapid validation of high-efficiency power rails in industrial and embedded systems.

For engineers reviewing the MEZDPD4506AS-84F3 datasheet, MEZDPD4506AS-84F3 pinout, MEZDPD4506AS-84F3 application, or MEZDPD4506AS-84F3 equivalent, this page delivers verified technical context, key specifications, supply availability, manufacturer background, and targeted FAQs - all grounded in the official EVmEZDPD4506A-00A Rev. 1.0 documentation and MPS product architecture.

Technical Context

The MEZDPD4506AS-84F3 implements a complete evaluation platform for the mEZDPD4506A digital PMIC module, which embeds multiple-time programmable memory and operates with fixed 600kHz switching frequency. Its core function is to enable full characterization of output voltage, current limit, soft-start, compensation, and fault response via I²C communication using the EVKT-USBI2C-02 dongle.

The board supports real-time monitoring of VOUT, VIN, IOUT, temperature, and power-good status through dedicated test points and GUI telemetry. It requires external 4–45V DC input and delivers regulated output across 0.6–22V with ≤±0.3% load/line regulation and up to 94.4% peak efficiency at 24V_IN/12V_OUT/6A.

Key Specifications

Availability

MEZDPD4506AS-84F3 is available at Aetrix Electronics and suitable for industrial automation controllers, FPGA power sequencing validation, and telecom base station power subsystem prototyping requiring stable component supply during legacy design support phases.

Supply support for MEZDPD4506AS-84F3 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 for industrial, computing, automotive, and communications markets.

The mEZDPD4506A product line - evaluated by MEZDPD4506AS-84F3 - was designed to accelerate digital power system development with integrated programmability, real-time telemetry, and robust protection in a compact 18.8mm × 18.8mm module footprint.

FAQ

Is MEZDPD4506AS-84F3 still in production?

No - MEZDPD4506AS-84F3 corresponds to the EVmEZDPD4506A-00A evaluation board, explicitly marked "END OF LIFE" in the official Rev. 1.0 documentation dated February 2019. It is available only as legacy inventory with no ongoing manufacturing support.

What software is required to configure the board?

Virtual Bench Pro 2.2 GUI is mandatory for full functionality. It provides real-time parameter editing (output voltage, current limit, switching frequency), fault logging, and register-level access. The software is delivered via the included Tdrive-mEZDPD4506A USB thumb drive.

Does the board support analog feedback or only digital control?

MEZDPD4506AS-84F3 relies exclusively on digital I²C control - there is no analog feedback trim or external resistor programming. Output voltage is set and adjusted solely via register writes; the FB pin is internally connected and not user-accessible for analog loop modification.

Can it operate without the USB-to-I²C dongle?

No - the EVKT-USBI2C-02 dongle is required for all configuration, monitoring, and firmware interaction. The board lacks standalone operation mode; I²C signals are not exposed to headers for alternative host interfaces.

What is the default output voltage and how is it changed?

The default output voltage is 3.3V, programmed into the mEZDPD4506A module's nonvolatile memory. It is changed using Virtual Bench Pro 2.2 by writing to the VOUT_COMMAND register (PMBus address 0x20), followed by a power-cycle or soft-reset command to apply the new setting.

Are external capacitors required for stability?

Yes - the BOM specifies mandatory input/output ceramic capacitors (e.g., C1A/C1B = 10µF each, C2A/C2B = 22µF each), with optional bulk capacitance (C1C = 100µF E-cap) depending on VOUT. Omission violates stability requirements per the schematic and layout guidelines.

Is thermal performance documented for continuous 6A operation?

Yes - Figure 4 shows case temperature rise up to 130°C at 6A load with VIN=24V/VOUT=5V. Derating is required above 85°C ambient; forced airflow or heatsinking is recommended for sustained 6A output in enclosed environments.