Monolithic Power Systems Inc. EVM3683-10-MN-01A

Overview

EVM3683-10-MN-01A from Monolithic Power Systems is an evaluation board for the MPM3683-10 fully integrated 16V input, 10A step-down DC/DC power module; features configurable soft-start via external capacitor, open-drain power-good (PG) signal, and default 1.2V output; used to validate high-current POL conversion in server VRMs and telecom power shelves.

For engineers reviewing the EVM3683-10-MN-01A datasheet, EVM3683-10-MN-01A pinout, EVM3683-10-MN-01A application, or EVM3683-10-MN-01A equivalent, this board enables rapid efficiency measurement (92.4% @ 12V_IN/3.3V_OUT/10A), thermal profiling, load transient response (0–5A/µs), and PG timing validation under real-world PCB layout constraints.

Technical Context

The EVM3683-10-MN-01A implements the MPM3683-10 FCMLGA power module with integrated MOSFETs, controller, and compensation; supports 4–16V input and delivers up to 10A continuous output at 1.2V (default), adjustable via FB resistor divider.

It provides direct access to critical signals-EN, PG, VOUTSENSE, VINSENSE, TRK/REF, and CS-for loop stability analysis, sequencing verification, and current-sense calibration; switching frequency is fixed at 1MHz in default configuration.

Key Specifications

Availability

EVM3683-10-MN-01A is available at Aetrix Electronics and suitable for high-current point-of-load validation, DC/DC module qualification, and power integrity testing requiring stable component supply in server, networking, and FPGA power applications.

Supply support for EVM3683-10-MN-01A 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, headquartered in Kirkland, WA, with global design and support infrastructure.

The MPM3683-10 product line delivers fully integrated, high-current DC/DC power modules targeting space-constrained, thermally demanding applications such as AI accelerators, baseband units, and programmable logic power rails.

FAQ

What input voltage range is supported by the EVM3683-10-MN-01A?

The board supports 4V to 16V DC input, matching the MPM3683-10's operational range. Input must be current-limited and ripple-controlled; exceeding 16V risks damage to the module and input capacitors. The board includes 100µF bulk electrolytic (CIN1) and five 22µF ceramic inputs (CIN2–CIN5) optimized for this range.

How is output voltage adjusted on this evaluation board?

VOUT is set by the FB resistor divider (R7, R8, R6) per the MPM3683-10 datasheet equation: VOUT = 0.6V × (1 + R7/R8 + R7/R6). Default configuration yields 1.2V; changing R7 (34.8kΩ), R8 (80.6kΩ), or R6 (243kΩ) recalculates the feedback ratio without requiring solder modification of the module itself.

Does the board provide access to the power-good (PG) signal?

Yes - PG is routed to test point TP4 and header pin 4 of the 12-pin MODE header. It is an open-drain output that pulls low when VOUT deviates >±10% from nominal; external pull-up (R4 = 100kΩ to VCC) is onboard, enabling direct connection to FPGA or microcontroller reset controllers.

Can the EVM3683-10-MN-01A be used for load transient testing?

Yes - it includes a dedicated load transient circuit with Q1 (AM7432N-T1-PF), R13/R14 (0.2Ω sense resistors), and T_LOAD+/T_LOAD− terminals. This allows controlled 0–5A step loads at 5A/µs slew rate, with VOUT ripple measured directly at VOUTSENSE/GNDSENSE using AC-coupled oscilloscope probes.

What is the purpose of the MODE header on the board?

The 12-pin MODE header provides access to all internal control and monitoring nodes: EN, PG, VCC, TRK/REF, FB, CS, SW, BST, RGND, AGND, PGND, and MODE. It enables probing, signal injection, and custom sequencing without soldering - critical for validating startup behavior and fault response in system-level integration.