Monolithic Power Systems Inc. EVQ5072-G-00A

Overview

EVQ5072-G-00A from Monolithic Power Systems is an evaluation board for the MPQ5072, a 5.5V, 2A programmable-current load switch with 50mΩ R_DS(ON), AEC-Q100 qualified, and integrated thermal/short-circuit protection. It supports 0.5V–5.5V input, delivers up to 2A continuous output, and features adjustable current limit via external resistor on ILIM pin. Used for validating load-switch behavior in portable SSDs and tablet power rails.

For engineers reviewing the EVQ5072-G-00A datasheet, EVQ5072-G-00A pinout, EVQ5072-G-00A application, or EVQ5072-G-00A equivalent, this board enables rapid functional validation of MPQ5072-based power sequencing, current-limited hot-swap, and enable-controlled rail activation in space-constrained embedded systems.

Technical Context

The EVQ5072-G-00A implements the MPQ5072 IC in a fully assembled, test-ready QFN-12 (2mm×2mm) layout with optimized decoupling (four 22µF X5R 0805 caps), soft-start timing control (C4), and programmable current limit (R1). It replicates production-level thermal performance and transient response under 2A load steps.

Board-level functions include power-good signaling (PG pin), output discharge (DIS pin), enable-controlled startup (EN logic thresholds: 2.6V ON / 0.4V OFF), and real-time current monitoring via VIMON pin. All critical signals are accessible via test points and solder pads.

Key Specifications

Availability

EVQ5072-G-00A is available at Aetrix Electronics and suitable for notebook power management, SSD rail enablement, and handheld device hot-swap validation requiring stable component supply and repeatable lab evaluation capability.

Supply support for EVQ5072-G-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 core expertise in DC/DC converters, load switches, and motor drivers.

The MPQ5072 product line targets automotive-grade and portable electronics applications requiring reliable, low-R_DS(ON) load switching with programmable protection-designed specifically for space-constrained, thermally sensitive power domains.

FAQ

What is the primary function of the EVQ5072-G-00A evaluation board?

This board demonstrates and validates the MPQ5072 load switch IC, enabling engineers to verify current-limiting behavior, enable sequencing, power-good assertion, short-circuit response, and thermal shutdown under real-world load conditions across its full 0.5V–5.5V input range.

How is output current limit configured on this board?

The current limit is set by resistor R1 connected between the ILIM pin and GND. With R1 = 13kΩ (as populated), the board achieves a 2.5A limit per the MPQ5072's ILIM transfer function. Values can be changed to adjust limit within the IC's 0.5A–2.5A range.

Does the board support output discharge functionality?

Yes-the MPQ5072 integrates an internal discharge FET controlled by the DIS pin. On this board, DIS is pulled high by default; driving it low activates automatic VOUT discharge through a 100Ω path, preventing floating voltages during disable.

What is the role of capacitor C4 on the EVQ5072-G-00A?

C4 sets the soft-start slew rate by controlling the gate ramp time of the internal FET. A 0.1µF C4 yields ~1ms startup time; increasing capacitance slows turn-on to reduce inrush current into large capacitive loads like SSD power rails.

Can the EVQ5072-G-00A operate below 3V input?

Yes-the MPQ5072 IC supports down to 0.5V VIN, and the board's layout and component selection (e.g., 10V-rated 22µF caps) maintain functionality at 0.5V–3V. However, PG and EN thresholds remain fixed, so logic compatibility must be verified at sub-3V operation.

Is the board AEC-Q100 qualified?

No-the EVQ5072-G-00A evaluation board itself is not AEC-Q100 qualified. However, it hosts the MPQ5072GG IC, which is AEC-Q100 Grade 1 qualified (−40°C to +125°C), enabling automotive-grade validation when used in appropriate environmental test setups.