Monolithic Power Systems Inc. EV5022A-QV-00A

Overview

EV5022A-QV-00A from Monolithic Power Systems is a hot-swap protection evaluation board built around the MP5022AGQV IC, featuring 8–16V input range, 12A continuous load capability, 3mΩ R_DS(ON), ±3% current limit/monitor accuracy, and fast short-circuit response (<200ns). It enables safe in-system insertion/removal of power modules in server backplanes and networking equipment.

For engineers reviewing the EV5022A-QV-00A datasheet, EV5022A-QV-00A pinout, EV5022A-QV-00A application, or EV5022A-QV-00A equivalent, this board provides validated reference design, BOM traceability, thermal performance validation, and functional verification of PG/FLTB signaling, EN blanking, and external soft-start implementation.

Technical Context

The EV5022A-QV-00A is a fully assembled, tested evaluation platform for the MP5022AGQV hot-swap controller IC. It implements all critical support circuitry including input TVS (SMCJ12A), output discharge path, precision current-sense resistors (R3 = 100Ω), programmable EN blanking (R8/R9 = 365kΩ), and PG/FLTB pull-up networks (R2/R6 = 10kΩ).

Board-level features include 470µF bulk output capacitance (CD263-35V470), dual-stage input filtering (C1A/C1B), and layout-optimized high-current paths with 2oz copper on top/bottom layers. The 8.55cm × 8.55cm PCB supports direct connection to 12V/15A lab supplies and load banks via screw terminals.

Key Specifications

Availability

EV5022A-QV-00A is available at Aetrix Electronics and suitable for server backplane validation, enterprise SSD power sequencing, telecom line card qualification, and industrial PLC module integration requiring stable component supply and pre-validated thermal/mechanical design.

Supply support for EV5022A-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 MP5022A product line targets high-reliability hot-swap applications in datacenter infrastructure, where precise current limiting, fast fault detection, and MOSFET health monitoring are required to prevent system-level damage during live insertion.

FAQ

What is the purpose of the NS-marked components R13 and C13 on the EV5022A-QV-00A board?

R13 and C13 are no-stuff (NS) positions reserved for optional RC filter on the FLTB signal path. They allow users to add external low-pass filtering if noise immunity is required in electrically noisy environments, without modifying the base PCB layout or affecting default functionality.

Can the EV5022A-QV-00A be used to validate under-voltage lockout (UVLO) behavior of the MP5022AGQV?

Yes - the board supports UVLO testing via adjustable input supply. When VIN drops below the MP5022A's 7.5V UVLO threshold (typ.), the device disables the FET and asserts FLTB. This behavior is observable at the FLTB test point and confirmed in the Rev. 1.1 schematic's U1 pin 16 connection.

Does the EV5022A-QV-00A include provisions for measuring real-time output current?

Yes - the board routes the current-sense voltage (V_SENSE) to test point TP3. With R3 = 100Ω and MP5022A's 1V/A transconductance, 12A load yields 1.2V at TP3, measurable with standard DMM or oscilloscope, enabling direct correlation between load current and monitor output.

How is thermal performance validated on the EV5022A-QV-00A evaluation board?

Thermal validation uses IR imaging and thermocouple measurements at the MP5022AGQV QFN-22 package center and solder pad. At 12A/12V, junction temperature remains ≤95°C with 200 LFM airflow, confirming safe operation within the IC's 150°C T_J(MAX) limit per datasheet Section 7.2.

Is the PG (Power Good) signal active-high or active-low on this evaluation board?

The PG signal is active-low, asserted low when VIN ≥ 8.5V and no fault is present. The board pulls PG up to +3.3V via R2/R6 (10kΩ), matching MP5022A's open-drain PG output structure. PG deasserts (goes high-impedance) during UVLO, OVLO, or thermal shutdown.

What is the function of D1 and D2 (B330A Schottky diodes) on the EV5022A-QV-00A board?

D1 and D2 form an input reverse-polarity protection stage. They block negative input voltage while conducting forward current with <0.45V drop at 3A, preventing damage to the MP5022AGQV and downstream circuitry during incorrect power connection - a requirement for field-deployable evaluation platforms.