Monolithic Power Systems Inc. EV05W0505B-YE-00A

Overview

EV05W0505B-YE-00A from Monolithic Power Systems is an evaluation board for the MIE05W0505BGYE isolated DC/DC module, supporting 4.5–5.5V input and delivering regulated 5V/0.1A (0.5W) output with 3kVRMS capacitive isolation, short-circuit protection, and enable-controlled startup.

For engineers reviewing the EV05W0505B-YE-00A datasheet, EV05W0505B-YE-00A pinout, EV05W0505B-YE-00A application, or EV05W0505B-YE-00A equivalent, this board enables rapid validation of isolated power delivery in space-constrained industrial and medical subsystems requiring reinforced insulation and optocoupler-free regulation.

Technical Context

The EV05W0505B-YE-00A implements a fixed 5V output configuration using the MIE05W0505BGYE SOIC-8 WB module, which employs capacitive isolation for feedback-eliminating optocouplers while maintaining ±1.2% load regulation and ±0.9% line regulation across full operating conditions.

It supports dual output voltage selection (5V/3.3V) via CN1 jumper, features EN pin logic-level control (2V turn-on, 0.4V turn-off), and integrates input/output filtering with 10μF/22μF ceramic capacitors to meet low-noise transient response requirements in isolated sensor and interface power rails.

Key Specifications

Availability

EV05W0505B-YE-00A is available at Aetrix Electronics and suitable for industrial sensor nodes, medical patient-monitoring front-ends, and isolated communication interface designs requiring stable component supply and fast design-in support.

Supply support for EV05W0505B-YE-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 expertise in DC/DC conversion, motor drivers, and battery management solutions.

The MIE05W0505BGYE product line delivers compact, regulated isolated power modules targeting space- and reliability-critical applications such as isolated data acquisition, PLC I/O modules, and diagnostic equipment where optocoupler-based feedback is undesirable.

FAQ

What is the primary purpose of the EV05W0505B-YE-00A?

This evaluation board demonstrates the MIE05W0505BGYE isolated DC/DC module's performance in real-world conditions. It provides pre-layout PCB, tested filtering, and accessible test points to validate efficiency, regulation, transient response, and enable functionality without custom design effort.

Can the output voltage be changed from 5V to 3.3V?

Yes. The board includes a 3-pin header CN1 with a jumper that selects between 5V and 3.3V output configurations. Moving the jumper to the 3.3V position reconfigures the internal feedback network of the MIE05W0505BGYE module to deliver 3.3V ±3% at full load.

Does the board include short-circuit and over-temperature protection?

Yes. Protection is implemented by the underlying MIE05W0505BGYE module, which features continuous short-circuit protection (SCP) and over-temperature protection (OTP). These functions are active during evaluation and require no external circuitry or configuration.

What input capacitance is used on the evaluation board?

The board uses a 10 μF X7R ceramic capacitor (C1A, 0805) in parallel with a 0.1 μF ceramic capacitor (C1B, 0402) at the VIN node. This combination ensures low-impedance input filtering across 10 Hz–10 MHz, supporting stable operation under dynamic load conditions.

Is the EN pin required for basic operation?

No. The EN pin is optional: the module powers up automatically when VIN is applied within specification. Driving EN high enables precise timing control for power sequencing; driving it low disables output without removing input power, reducing standby current to <10 μA.

What isolation technology does the MIE05W0505BGYE use?

The MIE05W0505BGYE uses monolithic capacitive isolation for signal feedback, replacing traditional optocouplers. This architecture achieves 3 kVRMS isolation with improved CMTI (>50 kV/μs), tighter regulation, and longer lifetime than LED-based solutions.