Monolithic Power Systems Inc. EV5099-D-00A

Overview

EV5099-D-00A from Monolithic Power Systems is a 12V/5V dual-channel e-fuse evaluation board built around the MP5099GDT IC, demonstrating current-limiting protection, output over-voltage protection (OVP), soft-start control via external capacitor, and dual-rail current monitoring via IMON pins. It supports 0–4A on Channel 1 (12V rail) and 0–3A on Channel 2 (5V rail) with TQFN-10 package integration.

For engineers reviewing the EV5099-D-00A datasheet, EV5099-D-00A board layout, EV5099-D-00A test setup, or EV5099-D-00A alternative evaluation platforms, this board enables rapid validation of dual-rail fault protection, inrush current limiting, and real-time current monitoring in power distribution systems for industrial control, telecom infrastructure, and embedded computing.

Technical Context

The EV5099-D-00A implements the MP5099's dual-channel e-fuse functionality with independent input voltage ranges: VIN1 = 10.8–13.2V (12V rail) and VIN2 = 4.5–5.5V (5V rail). Each channel features fixed current limit (4A/3A), programmable soft-start via SS pin capacitor, and OVP clamping to protect downstream circuitry.

Current monitoring is implemented per channel using external resistors at IMON pins, with IMON_SEL pin selecting between IOUT1 and IOUT2 sensing. Enable control is provided via EN pin, supporting logic-level on/off sequencing of both channels simultaneously.

Key Specifications

Availability

EV5099-D-00A is available at Aetrix Electronics and suitable for industrial control panels, telecom power distribution units, and embedded computing power subsystems requiring stable component supply, repeatable lab validation, and fast prototyping of dual-rail protected power paths.

Supply support for EV5099-D-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 design expertise in DC/DC converters, e-fuses, LED drivers, and motor drivers.

The MP5099 product line delivers compact, low-RDS(ON) dual-channel e-fuses for space-constrained applications needing coordinated over-current, over-voltage, and inrush protection across mixed-voltage domains.

FAQ

What is the primary function of the EV5099-D-00A evaluation board?

The EV5099-D-00A is a hardware platform designed to demonstrate and validate the MP5099 dual-channel e-fuse IC. It enables engineers to verify current limiting, soft-start behavior, output over-voltage protection, and analog current monitoring under real-world load conditions across independent 12V and 5V rails.

How do I configure the board to monitor Channel 1 current?

To monitor Channel 1 output current (IOUT1), pull the IMON_SEL pin high. The IMON pin then outputs a voltage proportional to IOUT1, scaled by the external resistor connected from IMON to ground. A 24.9kΩ resistor is populated on the board for default gain calibration.

Can the EV5099-D-00A operate with only one input powered?

Yes - the board supports asymmetric operation. Channel 1 functions when VIN1 is within 10.8–13.2V and VIN2 exceeds its UVLO threshold (≥4.5V); Channel 2 operates when VIN2 is within 4.5–5.5V and VIN1 exceeds its UVLO (≥10.8V). Both channels require valid enable logic.

What is the role of the SS pin on the MP5099, and how is it implemented on this board?

The SS (soft-start) pin controls the output voltage slew rate during startup to limit inrush current. On EV5099-D-00A, a 100nF capacitor (C3) is connected from SS1 to ground for Channel 1, and another (C4) from SS2 to ground for Channel 2 - setting distinct soft-start times per rail.

Does the board include over-voltage protection verification capability?

Yes - the board exposes VIN1, VIN2, VOUT1, and VOUT2 test points, allowing direct oscilloscope measurement of OVP response. When VOUT exceeds the internal threshold (typically ~13.5V for Channel 1, ~5.8V for Channel 2), the MP5099 clamps the output, which can be observed as voltage collapse and current foldback on test equipment.

Is the EV5099-D-00A RoHS-compliant and lead-free?

Yes - all components on the EV5099-D-00A, including the MP5099GDT IC and passive elements, are RoHS-compliant and lead-free per MPS manufacturing standards and JEDEC J-STD-020 reflow profiles.