Monolithic Power Systems Inc. EV2182-TL-00A

Overview

EV2182-TL-00A from Monolithic Power Systems is a fully assembled, tested evaluation board for the MP2182GTL 2A synchronous step-down DC/DC converter IC. It implements a fixed 1.2V output configuration using a 1µH inductor and dual 22µF ceramic output capacitors, operates from 2.5V–5.5V input, and delivers up to 2A continuous load current with peak efficiency >95% at 3.6V_IN/1.2V_OUT.

For engineers reviewing the EV2182-TL-00A datasheet, EV2182-TL-00A schematic, EV2182-TL-00A test waveforms, or EV2182-TL-00A BOM validation, this board enables rapid functional verification, efficiency benchmarking, transient response characterization, and layout reference for SOT583-based buck converters in space-constrained portable power designs.

Technical Context

The EV2182-TL-00A implements the MP2182GTL's Constant-On-Time (COT) control architecture, enabling fast load-step response (<10µs recovery) without external compensation. It integrates 80mΩ high-side and 40mΩ low-side MOSFETs, supports 100% duty-cycle operation for ultra-low dropout, and includes EN-controlled sequencing, Power Good indication, and hiccup-mode short-circuit protection.

Test conditions are standardized per MPS documentation: V_IN = 5V, V_OUT = 1.2V, L = 1.0µH (Würth 74437324010), C_OUT = 2 × 22µF X5R 0805, T_A = +25°C. Measured waveforms include startup, load transients (0.1A→2A), EN control timing, and short-circuit entry/recovery behavior.

Key Specifications

Availability

EV2182-TL-00A is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered IoT nodes, and low-voltage I/O system power applications requiring stable component supply, pre-validated performance data, and fast-turn prototyping support.

Supply support for EV2182-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 conversion, LED drivers, and motor control solutions.

The MP2182 product line delivers ultra-small, high-efficiency synchronous buck converters for space- and power-sensitive applications including wireless cards, portable instruments, and multi-rail embedded systems.

FAQ

What input voltage range is supported on the EV2182-TL-00A board?

The board operates from 2.5V to 5.5V DC input. At VIN < 3.3V, the BOM specifies increased input capacitance per MPS recommendation; the default 22µF×2 input capacitors meet spec above 3.3V but may require augmentation for sub-3.3V operation under high ripple current.

How is the output voltage configured, and can it be adjusted?

The board ships with a fixed 1.2V output set by R1 = 200kΩ and R2 = 200kΩ. Output voltage is adjustable down to 0.6V using the formula V_OUT = 0.6V × (1 + R1/R2); R1 is typically held at 200kΩ, and R2 is varied-e.g., 100kΩ yields 1.8V.

Does the board include Power Good signaling and enable control?

Yes. The board exposes both EN and PG pins. EN allows external power sequencing control with clean turn-on/turn-off behavior verified in test waveforms. PG asserts high when V_OUT is within ±5% of regulation, providing system-level power status monitoring.

What inductor and output capacitors are used, and are they optimized for EMI?

It uses Würth 74437324010 (1.0µH, 27mΩ DCR, 9A I_SAT) and two Murata GRM21BR61C226ME44L (22µF, X5R, 0805). Layout follows MPS-recommended high-current loop minimization and ground plane integrity-critical for low EMI in 1.2MHz switching.

Are test waveforms and efficiency data provided with the board?

Yes. The official Rev.1.0 documentation includes 14 oscilloscope waveforms (startup, load transients, EN control, short-circuit behavior) and an efficiency vs. load plot across three input voltages (2.5V, 3.6V, 5V), all captured under controlled lab conditions with specified components and layout.

Can this board be used to evaluate the MP2182's COT control loop stability?

No external compensation is required-the MP2182's COT architecture eliminates traditional Type-II/III compensation networks. Stability is inherent; the board validates transient response (e.g., 0.1A→2A in 80µs with <20mV dip) and absence of ringing, confirming robust loop behavior without tuning.