Monolithic Power Systems Inc. EVM3820-QV-00A

Overview

EVM3820-QV-00A from Monolithic Power Systems is an evaluation board for the MPM3820GQV synchronous step-down DC/DC module - a 2A, 1.2 MHz, integrated-inductor buck converter with fixed 1.2 V output, 2.7–6 V input range, and QFN 3.0×5.0×1.6 mm package - used to validate power delivery in space-constrained portable and storage applications.

For engineers reviewing the EVM3820-QV-00A datasheet, EVM3820-QV-00A pinout, EVM3820-QV-00A application, or EVM3820-QV-00A equivalent, this board enables rapid validation of MPM3820GQV's constant-on-time control, 40 µA quiescent current, hiccup-mode short-circuit protection, and 100% duty-cycle dropout capability under real load conditions.

Technical Context

The EVM3820-QV-00A implements the MPM3820GQV IC in a fully assembled, tested layout optimized for low-noise, high-efficiency operation at 1.2 MHz switching frequency. It supports both fixed 1.2 V and adjustable 0.6–6 V output configurations via external feedback resistors.

Board-level design includes two 22 µF X5R ceramic input/output capacitors (TDK C2012X5R1A226K), precision 1% feedback resistors (R1/R2 = 100 kΩ), and thermal vias aligned to the QFN thermal pad - enabling stable 2 A continuous output with cycle-by-cycle over-current protection and thermal shutdown.

Key Specifications

Availability

EVM3820-QV-00A is available at Aetrix Electronics and suitable for low-voltage I/O system power, LDO replacement, and portable product power validation requiring stable component supply, repeatable test conditions, and fast time-to-bench evaluation.

Supply support for EVM3820-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MPM3820 product line delivers ultra-compact, high-efficiency power modules targeting space-constrained applications such as SSDs, portable computing, and low-voltage FPGA/I/O rails where integrated inductors and minimal external components are critical.

FAQ

What is the default output voltage configuration on the EVM3820-QV-00A?

The board ships with a fixed 1.2 V output using 100 kΩ feedback resistors (R1 and R2). This matches the MPM3820GQV's factory-trimmed VOUT setting and requires only input and output capacitors for operation - no resistor adjustment needed for baseline testing.

Can the EVM3820-QV-00A be used to evaluate adjustable-output operation?

Yes - the board supports adjustable output from 0.6 V by replacing R2 with a calculated value while keeping R1 between 50 kΩ and 200 kΩ. The schematic and quick-start guide provide the exact formula: R2 = R1 × (0.6 / VOUT − 1), validated per Rev. 1.0 documentation.

Does the evaluation board include thermal management features?

Yes - the PCB uses thermal vias beneath the MPM3820GQV's exposed thermal pad and a 2-layer copper stack-up to dissipate heat during 2 A continuous operation. Layout recommendations in the reference document emphasize thermal pad connectivity and ground plane integrity.

What input and output capacitors are installed on the EVM3820-QV-00A?

The board uses three 22 µF, 10 V, X5R ceramic capacitors (TDK C2012X5R1A226K) - two at the input (C1, C2) and one at the output (C2A) - placed per MPS layout guidelines to minimize loop inductance and ensure stability at 1.2 MHz.

Is power sequencing supported on this evaluation board?

Yes - the MPM3820GQV IC includes EN (enable) and PG (power good) pins, both broken out to test points on the EVM3820-QV-00A. These allow controlled startup sequencing and system-level fault monitoring without additional circuitry.

What is the maximum continuous output current verified on this board?

The EVM3820-QV-00A is validated for 2 A continuous output current at 1.2 V with VIN = 5 V and TA = 25 °C, per test results in the official Rev. 1.0 evaluation report - including efficiency curves, load transient response, and thermal imaging data.