Monolithic Power Systems Inc. EV5920-5048-V-00A

Overview

EV5920-5048-V-00A from Monolithic Power Systems is an evaluation board demonstrating the MP5920 hot-swap controller and five MP5048 Intelli-Fuse devices in a 5-phase 48V/75A hot-swap protection system. It delivers 60V input rating, 15A per-phase continuous current, 7mΩ R_DS(ON), PMBus interface, and integrated current/voltage/temperature monitoring. The board targets high-reliability server power distribution with programmable OCP, OTP, and VIN OVP.

For engineers reviewing the EV5920-5048-V-00A datasheet, EV5920-5048-V-00A pinout, EV5920-5048-V-00A application, or EV5920-5048-V-00A equivalent, this board enables rapid validation of multi-phase hot-swap architecture, PMBus-configurable protection thresholds, real-time energy monitoring, and parallel Intelli-Fuse operation - critical for enterprise-grade 48V DC distribution systems.

Technical Context

The EV5920-5048-V-00A integrates one MP5920 TQFN-32 controller and five MP5048 QFN-30 Intelli-Fuses, forming a coordinated hot-swap subsystem. The MP5920 provides PMBus-based configuration of over-voltage (58.185V VIN OVP), over-current (96.41A total OCP), and over-temperature (120°C fault) thresholds, while reading telemetry via a built-in 12-bit ADC.

Each MP5048 implements integrated 60V/15A switching with 7mΩ R_DS(ON), on-die current sensing, thermal monitoring, and gate/drain/source short detection. Phasing is configured via resistor removal and TIMER pin tying, supporting 1–5 active phases with shared CLREF, IMON, and FAULT signaling.

Key Specifications

Availability

EV5920-5048-V-00A is available at Aetrix Electronics and suitable for server power distribution, telecom DC infrastructure, and industrial 48V hot-swap applications requiring stable component supply, rapid prototyping support, and production-ready reference design validation.

Supply support for EV5920-5048-V-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, hot-swap control, and intelligent power delivery solutions for data centers and communications infrastructure.

The EV5920-5048-V-00A belongs to MPS's Hot-Swap & Intelli-Fuse Evaluation Platform product line, designed to accelerate adoption of programmable, high-density 48V power protection architectures in cloud-scale and edge computing systems.

FAQ

What is the maximum supported input voltage for the EV5920-5048-V-00A?

The board supports up to 60V input, with a factory-set VIN over-voltage fault threshold of 58.185V (register 55h). This aligns with the MP5920's 60V absolute maximum rating and ensures robust operation across 48V ±10% telecom and data center bus rails.

How many MP5048 devices are populated on the board, and can the phase count be reduced?

Five MP5048GU devices (U2–U6) are soldered on the board. Phase count is configurable from 1 to 5 by removing specific resistors and tying TIMER pins - Table 1 in the user guide details resistor removal patterns for each configuration.

Does the board support real-time power and energy monitoring?

Yes. The MP5920 integrates a 12-bit ADC and PMBus firmware that reports instantaneous input power, cumulative energy consumption, current, voltage, and die temperature - accessible via the GUI Monitor page or direct PMBus register reads (e.g., READ_POWER, READ_EIN).

What interfaces are available for configuring protection thresholds?

Configuration is exclusively via the PMBus interface using the EVKT-USBI2C-02 kit and MPS GUI. Parameters including VIN_ON/OFF, OCP limits, OTP thresholds, soft-start time, and PG delays are editable through the Protection and Advanced tabs - no jumpers or DIP switches are used.

Is external current-sense resistance required for operation?

No. Each MP5048 provides fully integrated current sensing with no external sense resistor needed. The board uses the internal IMON output scaled to 25μA/A, with average IMON set to 0.72kΩ for 5-phase operation - eliminating PCB space and power loss associated with shunt resistors.

What is the role of the CLREF signal, and how is it generated?

CLREF is the current-limit reference voltage supplied by the MP5920 to each MP5048. By default, it is generated internally by the MP5920 and routed to all five CLREF pins. To enable MP5920-controlled current limiting, all external CLREF resistors (R1, R4, R74, R78, R82) must be removed as instructed in the GUI Advanced → CLREF section.