Monolithic Power Systems Inc. EV5061-QV-00A

Overview

EV5061-QV-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MP5061GQV hot-swap protection IC, featuring a 7mΩ R_DS(on) integrated power FET, adjustable 5–15A current limit, ±5% current monitor accuracy, and fast <200ns short-circuit response. It supports 4.5–28V input/output operation and enables design validation of hot-swap behavior in PC card, laptop, and disk drive power rails.

For engineers reviewing the EV5061-QV-00A datasheet, EV5061-QV-00A pinout, EV5061-QV-00A application, or EV5061-QV-00A equivalent, this board provides direct access to MP5061GQV's fault management (auto-retry/latch-off thermal & OCP), PG/FLTB signaling, external soft-start control, and real-time IMON output - all on a validated QFN-22 layout with test points and BOM documentation.

Technical Context

The EV5061-QV-00A implements the MP5061GQV's full functional interface: VIN (4.5–28V), EN-controlled startup, programmable TIMER pin for fault timeout and restart delay, ISET resistor for 5–15A current limit, and SS pin for external soft-start ramp control. It exposes all critical signals - PG, Fault, IMON, FB, PD - via 1mm test points for oscilloscope probing and system integration verification.

Board-level design includes 220μF bulk output capacitance (C3A), 4.7μF ceramic (C2A), and 220nF/47nF timing capacitors (C7/C8) matching MP5061GQV's recommended values for stable hot-plug insertion, thermal recovery, and OCP response. The QFN-22 footprint (3mm × 5mm) is preserved with thermal pad grounding per MPS layout guidelines.

Key Specifications

Availability

EV5061-QV-00A is available at Aetrix Electronics and suitable for PC card hot-swap validation, laptop power-rail stress testing, and disk drive transient immunity qualification requiring stable component supply and repeatable lab evaluation capability.

Supply support for EV5061-QV-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 analog and power ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP5061 product line delivers integrated hot-swap controllers for 4.5–28V systems, targeting space-constrained, high-reliability applications where inrush control, fault logging, and accurate current monitoring are essential - such as portable computing and storage subsystems.

FAQ

What is the purpose of the AUTO pin on the EV5061-QV-00A board?

The AUTO pin selects fault recovery behavior: connecting to +3.3V or leaving floating enables auto-retry mode, while grounding it activates latched-fault mode. This matches MP5061GQV's internal logic and is verified in board test reports for both thermal shutdown and overcurrent events.

Does the board include the MP5061GQV IC pre-soldered and functional?

Yes - the EV5061-QV-00A is a fully assembled and factory-tested evaluation board containing the MP5061GQV in QFN-22 package, with all supporting passives (including 220μF electrolytic C3A and 4.7μF ceramic C2A), test points, and silk-screened labeling per Rev. 1.0 schematic.

How is current monitoring implemented on this evaluation board?

Current monitoring uses the MP5061GQV's IMON pin, which outputs an analog voltage proportional to load current with ±5% accuracy. The board routes IMON to a dedicated 1mm test point (TP1MM), enabling direct oscilloscope or multimeter measurement without soldering or probe interference.

Can the EV5061-QV-00A be used to evaluate under-voltage lockout (UVLO) behavior?

Yes - UVLO is inherent to MP5061GQV and active on the board: PG asserts low when VIN drops below 4.5V, and the board's VOUT rail shuts down cleanly. Test waveforms in the official document confirm PG deassertion during VIN ramp-up from 0V.

What is the role of the TIMER pin and its associated 220nF capacitor (C7)?

C7 (220nF) sets the MP5061GQV's internal timer for hot-plug insertion delay, fault timeout duration, and restart interval. On the EV5061-QV-00A, C7 is populated per datasheet recommendations and verified in startup/shutdown waveform tests across 4.5–28V input conditions.

Is there a way to discharge the output capacitor after shutdown?

Yes - the PD pin connects directly to the VOUT rail via D1 (B330A Schottky diode) and is routed to a test point. When asserted low by the MP5061GQV during fault or shutdown, PD actively discharges the 220μF output capacitor through the internal path, confirmed in shutdown waveform measurements.