Monolithic Power Systems Inc. EV2184-TL-00A

Overview

EV2184-TL-00A from Monolithic Power Systems is an evaluation board for the MP2184GTL 4A synchronous step-down converter IC, designed to demonstrate high-efficiency DC/DC conversion from 2.5V–5.5V input to adjustable 0.6V–1.2V output with 1.2MHz switching frequency, 1% FB accuracy, and integrated 65mΩ/35mΩ MOSFETs. It supports load transients up to 4A and includes power-good signaling, thermal shutdown, and hiccup-mode short-circuit protection.

For engineers reviewing the EV2184-TL-00A datasheet, EV2184-TL-00A pinout, EV2184-TL-00A application, or EV2184-TL-00A equivalent, this board enables rapid validation of MP2184GTL performance in portable power, low-voltage I/O rails, wireless networking cards, and battery-powered instrumentation under real-world load and thermal conditions.

Technical Context

The EV2184-TL-00A implements the MP2184GTL in a fixed 1.2V output configuration using two 200kΩ feedback resistors (R1/R2), a 1.0µH shielded inductor (Würth 74437324010), and dual 22µF X5R ceramic output capacitors. Input filtering uses three 22µF ceramics (C1/C2/C2A) and one 2.2nF high-frequency bypass capacitor (C3).

It operates with Constant-On-Time (COT) control for fast transient response and stable regulation across 0.2A–4A loads, validated at VIN = 3.6V/5V and TA = +25°C. Key test waveforms include startup/shutdown sequencing, EN-controlled enable/disable, load-step recovery (0.2A→4A in 80µs), and short-circuit entry/recovery within 400µs.

Key Specifications

Availability

EV2184-TL-00A is available at Aetrix Electronics and suitable for portable instrumentation, wireless networking card power validation, and battery-powered device subsystem testing requiring stable component supply and pre-validated reference designs.

Supply support for EV2184-TL-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 core expertise in DC/DC converters, LED drivers, and motor drivers for consumer, industrial, and automotive markets.

The MP2184 product line delivers ultra-small-footprint, high-current synchronous buck converters targeting space-constrained, battery-sensitive applications such as wearables, IoT sensors, and multi-function peripherals where efficiency, thermal performance, and layout simplicity are critical.

FAQ

What is the default output voltage setting on the EV2184-TL-00A?

The board is configured for 1.2V output using matched 200kΩ resistors (R1 and R2) in the feedback divider. This matches the typical application circuit in the MP2184GTL datasheet and enables immediate testing without component changes. Output can be adjusted to any value ≥0.6V by recalculating R2 per the formula VOUT = 0.6V × (1 + R1/R2).

Does the EV2184-TL-00A support external soft-start control?

Yes - the board exposes the SS pin (Pin 5 of U1, MP2184GTL) with a 0Ω jumper (J1) that allows connection of an external soft-start capacitor. When populated, this capacitor controls ramp rate during startup, reducing inrush current and preventing input voltage droop in sensitive systems.

Can the EV2184-TL-00A operate with input voltages below 3.3V?

Yes, but with increased input capacitance requirement. The design note specifies that VIN < 3.3V may need additional input capacitance beyond the standard three 22µF ceramics. Users should verify stability and ripple performance with ≥47µF total input capacitance when operating near 2.5V minimum input.

How is power-good status indicated on this evaluation board?

The PG pin (Pin 3 of U1) drives an onboard LED (D1) through a 10kΩ pull-up and N-channel FET buffer. When VOUT is within ±10% of regulation (1.08V–1.32V for 1.2V setting), PG asserts high, illuminating the LED. This provides immediate visual confirmation of valid output before connecting downstream loads.

What inductor is used, and why is its DCR specified?

The board uses Würth 74437324010: a 1.0µH, 9.0A saturation current, 27mΩ DCR shielded power inductor. The low DCR minimizes conduction loss at 4A, directly supporting >90% peak efficiency at 1A–4A loads, while the shielded construction suppresses radiated EMI in dense PCB layouts.

Is thermal performance characterized on this board?

Yes - thermal imaging and hot-spot measurements confirm the MP2184GTL die temperature remains ≤85°C at 4A/5V input/1.2V output with 200LFM airflow. The SOT583 package's exposed thermal pad is soldered to a 25mm² internal copper pour, enabling direct thermal coupling to the PCB ground plane.