Monolithic Power Systems Inc. EV1W0505B-LVH-00A

Overview

EV1W0505B-LVH-00A from Monolithic Power Systems is an evaluation board for the MIE1W0505BGLVH isolated DC/DC module, delivering regulated 5V output at up to 0.2A (1W) with 2.5kVRMS capacitive isolation, 4.5–5.5V input range, and integrated enable control. It demonstrates high-reliability power conversion in space-constrained industrial and medical sensor interfaces.

For engineers reviewing the EV1W0505B-LVH-00A datasheet, EV1W0505B-LVH-00A pinout, EV1W0505B-LVH-00A application, or EV1W0505B-LVH-00A equivalent, this board enables rapid validation of isolated 5V/3.3V supply generation, load transient response, line/load regulation, and EN-controlled startup/shutdown behavior under real PCB conditions.

Technical Context

The EV1W0505B-LVH-00A implements a complete test platform for the MIE1W0505BGLVH - a fully integrated, LGA-12 packaged, capacitive-isolated DC/DC converter. It includes input/output bulk and bypass capacitors (10μF/22μF/0.1μF), a 100kΩ voltage-select resistor, and a 3-pin DIP jumper (CN1) for 5V/3.3V output configuration.

This board supports dual startup methods: direct VIN application (4.5–5.5V) and logic-level EN control (2V threshold turn-on, 0.4V turn-off), with GND1/GND2 separation enforcing galvanic isolation integrity during measurement and functional testing.

Key Specifications

Availability

EV1W0505B-LVH-00A is available at Aetrix Electronics and suitable for isolated sensor node power, medical front-end signal conditioning, and industrial PLC I/O module development requiring stable component supply and fast design-in support.

Supply support for EV1W0505B-LVH-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 EV1W0505B-LVH-00A belongs to MPS's isolated DC/DC evaluation platform family, designed to accelerate adoption of their capacitive-isolation modules in safety-critical, space-limited, and noise-sensitive applications.

FAQ

What is the primary function of the EV1W0505B-LVH-00A?

The EV1W0505B-LVH-00A is an evaluation board-not a standalone power module-that demonstrates the MIE1W0505BGLVH isolated DC/DC converter. It provides a ready-to-use PCB with input/output filtering, voltage selection, and enable control to validate performance metrics including efficiency, regulation, ripple, and transient response under real-world conditions.

Can the output voltage be adjusted beyond 3.3V and 5V?

No. The board supports only two fixed output voltages: 5V (default) and 3.3V, selected by moving the jumper on CN1. The underlying MIE1W0505BGLVH module is factory-trimmed for these outputs; no external feedback resistor network is provided or supported on this EVB.

Does the board include short-circuit or overtemperature protection?

Protection is implemented in the MIE1W0505BGLVH IC itself-continuous short-circuit protection (SCP) and over-temperature protection (OTP)-but the EV1W0505B-LVH-00A board adds no additional protection circuitry. These features are active when the module operates within its specified input range and thermal environment.

What is the role of GND1 and GND2 on this board?

GND1 is the input-side ground reference; GND2 is the isolated output-side ground. Their physical separation on the PCB enforces the 2.5kVRMS isolation barrier. Connecting them defeats isolation and invalidates safety compliance-measurements must maintain galvanic separation between these nets.

Is the EN pin required for operation?

No. The board starts automatically when valid input voltage (4.5–5.5V) is applied to VIN and GND1. The EN pin is optional and provides active control: driving it above 2V enables the module; pulling it below 0.4V disables it, reducing quiescent current to <10 μA.

What capacitor types and values are used for input and output filtering?

The board uses a 10 μF X7R ceramic capacitor (C1A, 0805) at VIN, a 22 μF X5R ceramic (C2A, 0805) at VOUT, and two 0.1 μF X7R ceramics (C1B/C2B, 0402) placed close to the module pins for high-frequency decoupling-matching the layout and BOM recommendations in the MIE1W0505BGLVH datasheet.