Monolithic Power Systems Inc. EV04W0503A-2-Y-00B

Overview

EV04W0503A-2-Y-00B from Monolithic Power Systems is an evaluation board for the MID04W0503AGY-2R regulated, 1.5kVDC isolated DC/DC converter module, delivering 3.3V at up to 0.12A (0.4W) from a 4.5–5.5V input. It integrates power MOSFET, transformer, and feedback circuit in SOIC-16 WB packaging and supports isolated power supply design in space-constrained industrial and medical systems.

For engineers reviewing the EV04W0503A-2-Y-00B datasheet, EV04W0503A-2-Y-00B pinout, EV04W0503A-2-Y-00B application, or EV04W0503A-2-Y-00B equivalent, this board enables rapid validation of isolation performance, load regulation (<±1%), line regulation (<±0.5%), thermal behavior up to 95°C, and transient response under 0–120mA step loads.

Technical Context

The EV04W0503A-2-Y-00B implements a fully integrated isolated flyback topology using the MID04W0503AGY-2R IC, which embeds primary-side switching, transformer, and secondary-side regulation in a single SOIC-16 WB package. Input-to-output isolation is rated at 1.5kVDC with reinforced insulation structure.

Board-level design includes dual 10µF + 0.1µF ceramic input/output capacitance networks (C1A/C1B/C2A/C2B), split ground planes (GND1/PGND1 and GND2/PGND2), and optimized trace routing to maintain creepage/clearance compliance. Test conditions are defined at TA = 25°C with VIN = 5V, VOUT = 3.3V, and CIN/COUT = 0.1µF + 10µF.

Key Specifications

Availability

EV04W0503A-2-Y-00B is available at Aetrix Electronics and suitable for isolated sensor interfaces, medical patient-monitoring front-ends, and industrial PLC I/O modules requiring stable component supply, fast prototyping cycles, and documented safety-compliant evaluation hardware.

Supply support for EV04W0503A-2-Y-00B 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 expertise in DC/DC conversion, motor control, and battery management solutions.

The MID04W0503A product line delivers compact, fully integrated isolated DC/DC converters targeting space- and safety-critical applications including industrial automation, medical diagnostics, and isolated communication interfaces.

FAQ

What is the primary function of the EV04W0503A-2-Y-00B?

This evaluation board demonstrates the MID04W0503AGY-2R isolated DC/DC converter module. It provides a ready-to-use platform to validate 3.3V/0.12A isolated output, 1.5kVDC isolation, and regulation performance under real-world load and line conditions without custom PCB design.

Does the board include input and output filtering components?

Yes - it integrates two parallel capacitor networks: 10µF + 0.1µF on both input (C1A/C1B) and output (C2A/C2B) sides, using X5R/X7R ceramics in 0805 and 0402 packages to suppress ripple and ensure stable startup and transient response.

Can the EV04W0503A-2-Y-00B be used for long-term deployment?

No - it is strictly an evaluation board, not a production-grade module. Its 2-layer PCB, non-hermetic construction, and lack of conformal coating limit use to lab validation. For production, integrate the MID04W0503AGY-2R IC into a certified system-level design.

What ground separation does the board implement?

The board uses physically separated primary (GND1/PGND1) and secondary (GND2/PGND2) ground planes, with no copper connection between them, maintaining the 1.5kVDC isolation barrier required for safety certification testing.

How is the output voltage set and verified?

VOUT is fixed at 3.3V by internal feedback circuitry within the MID04W0503AGY-2R IC. No external resistors or configuration pins are present - output accuracy is confirmed via test data showing ±1% regulation across 0–120mA load and 4.5–5.5V input.

What is the board's physical form factor?

The EV04W0503A-2-Y-00B measures 5.1cm × 5.1cm × 0.3cm, uses a 2-layer FR-4 substrate with 1oz copper weight per layer, and features clearly labeled test points (VIN, GND1, VOUT, GND2) and silk-screened functional markings for quick setup.