Monolithic Power Systems Inc. EV04W0503A-3-Y-00A

Overview

EV04W0503A-3-Y-00A from Monolithic Power Systems is an evaluation board for the MID04W0503AGY-3R regulated, 3kVDC isolated DC/DC converter module; supports 4.5–5.5V input, delivers 3.3V/0.12A (0.4W) output, and features SOIC-16WB packaging with integrated MOSFET, transformer, and feedback circuitry; used to validate isolated bias supply in industrial I/O modules.

For engineers reviewing the EV04W0503A-3-Y-00A datasheet, EV04W0503A-3-Y-00A pinout, EV04W0503A-3-Y-00A application, or EV04W0503A-3-Y-00A equivalent, this board enables rapid functional validation of the MID04W0503AGY-3R under real-world load transients, line/load regulation, and isolation compliance testing at 3.3V output.

Technical Context

The EV04W0503A-3-Y-00A implements a fully assembled, two-layer PCB layout optimized for evaluating the MID04W0503AGY-3R's regulated flyback topology with internal primary-side control and transformer-coupled feedback. It includes input/output bulk and high-frequency ceramic capacitors (10µF + 0.1µF per rail) and separates GND1 (primary) and GND2 (secondary) to maintain 3kVDC isolation integrity.

Test conditions are defined at TA = 25°C with VIN = 5V, CIN/COUT = 0.1µF + 10µF, and load sweep from 0A to 0.12A; measured performance includes ±0.5% line regulation and ±1% load regulation across full operating range, confirming tight output stability without external compensation.

Key Specifications

Availability

EV04W0503A-3-Y-00A is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC analog I/O modules, and isolated communication gateways requiring stable component supply and verified 3kVDC isolation performance.

Supply support for EV04W0503A-3-Y-00A 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, with design centers in the US, China, and Taiwan, serving industrial, automotive, and cloud infrastructure markets.

This evaluation board supports MPS's MID-series isolated DC/DC modules-designed specifically for space-constrained, safety-critical applications needing certified galvanic isolation without external transformers or optocouplers.

FAQ

What is the purpose of the EV04W0503A-3-Y-00A evaluation board?

This board is a ready-to-use hardware platform for evaluating the MID04W0503AGY-3R isolated DC/DC converter. It provides pre-routed power paths, proper input/output filtering, and physical separation between primary and secondary grounds to validate regulation accuracy, transient response, and isolation robustness before system integration.

Can the EV04W0503A-3-Y-00A be used as a production-level power supply?

No-it is strictly an evaluation tool. While it demonstrates full functionality of the MID04W0503AGY-3R, its 2-layer PCB lacks the enhanced creepage, thermal vias, and conformal coating required for certified end-equipment. Production designs must follow MPS's layout guidelines and safety certifications.

What input and output capacitors are installed on the board?

The board uses two 10µF X5R 0805 ceramic capacitors (C1A, C2A) plus two 0.1µF X7R 0402 ceramics (C1B, C2B) per rail-matching the recommended input/output filter network in the MID04W0503AGY-3R datasheet for optimal ripple suppression and stability.

Does the board include short-circuit protection verification capability?

Yes-the test results section documents SCP entry waveforms showing VOUT collapse and automatic recovery when subjected to sustained overload. This confirms the MID04W0503AGY-3R's internal hiccup-mode protection operates correctly on this board layout.

How is isolation validated on this evaluation board?

Isolation is maintained via physical separation of GND1 (input side) and GND2 (output side), reinforced by cutouts and ≥8mm creepage distance between primary and secondary copper. The board supports 3kVDC dielectric withstand testing per IEC 60950-1, as confirmed by MPS's characterization data.