Monolithic Power Systems Inc. EVM3864-PQ-00A

Overview

EVM3864-PQ-00A from Monolithic Power Systems is an evaluation board for the MPM3864GPQ 7V, 6A synchronous step-down power module featuring constant-on-time (COT) control, 1.2MHz switching frequency, 1.2V default output, and full protection including SCP, OCP, UVP, and thermal shutdown-designed for rapid validation of point-of-load DC/DC conversion in compact embedded systems.

For engineers reviewing the EVM3864-PQ-00A datasheet, EVM3864-PQ-00A pinout, EVM3864-PQ-00A application, or EVM3864-PQ-00A equivalent, this board enables fast efficiency measurement (up to 89.7% peak), load transient testing (0–6A), ripple analysis, and configuration verification of the MPM3864 under real-world VIN (2.75–7V) and VOUT (adjustable via FB resistors) conditions.

Technical Context

The EVM3864-PQ-00A implements the MPM3864GPQ in a fully assembled, tested layout with integrated EMI filtering (LEMI1/LEMI2), input/output bulk capacitance (22µF × 6), and precision feedback network (R1/R2 = 20kΩ each for 1.2V). It supports direct connection to lab supplies and electronic loads without external components.

Board-level design includes dedicated sense traces (VOUTSENSE/GNDS), PG signal monitoring, BST capacitor placement per IC requirements, and copper-pin headers (Φ1/Φ2) for VIN, VOUT, EN, PG, and GND-enabling accurate voltage, current, and timing measurements while minimizing probe-induced noise.

Key Specifications

Availability

EVM3864-PQ-00A is available at Aetrix Electronics and suitable for DC/DC converter validation, power integrity testing, and embedded system PoL design requiring stable component supply, repeatable lab evaluation, and fast time-to-test for industrial controllers, FPGA core rails, and battery-powered IoT nodes.

Supply support for EVM3864-PQ-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 and modules, with expertise in integration, efficiency optimization, and thermally robust packaging.

The MPM3864 product line delivers fully integrated, high-current DC/DC power modules targeting space-constrained applications needing minimal external components, fast transient response, and reliable overcurrent/thermal protection-especially in computing, communications, and portable electronics.

FAQ

What input voltage range is supported by the EVM3864-PQ-00A?

The board supports 2.75V to 7V input per the MPM3864GPQ's operating specification. Exceeding 7V risks permanent damage to the module. Input must be applied before enabling EN, and reverse polarity or overvoltage is not protected on the evaluation board itself.

How is output voltage adjusted on this evaluation board?

VOUT is set by the R1/R2 feedback divider (20kΩ each for 1.2V). To change output, replace R1 and/or R2 with values calculated using the MPM3864's FB reference voltage (0.6V) and the formula VOUT = 0.6V × (1 + R1/R2). No solder jumpers or DIP switches are provided.

Does the EVM3864-PQ-00A include thermal monitoring or reporting features?

No. The board does not integrate temperature sensors or analog/digital thermal telemetry. Thermal performance is verified via IR imaging and ambient rise measurement (25°C rise at 6A). The MPM3864GPQ itself includes internal thermal shutdown but no external thermal output pin.

Can the EVM3864-PQ-00A be used for EMI compliance pre-scan?

Yes-it includes dual-stage EMI filtering (LEMI1/LEMI2 plus CF1–CF8) designed per MPS application guidelines. However, final system-level EMI certification requires full enclosure, cable loading, and conducted/radiated test setup per CISPR standards; this board serves only as a pre-compliance functional reference.

Is the power-good (PG) signal accessible and actively driven?

Yes. PG is routed to a Φ1 copper pin header and actively driven open-drain by the MPM3864GPQ. It asserts high when VOUT is within ±10% of regulation and remains low during startup, fault, or undervoltage-enabling system sequencing and fault logging.

What is the maximum recommended load current during continuous operation?

6A continuous is validated per the board's thermal design and component ratings (including 22µF × 6 output capacitors and 2512 R7 current-sense path). Sustained operation above 6A may trigger thermal shutdown or degrade capacitor lifetime; derating is advised above 55°C ambient.