Monolithic Power Systems Inc. EVKT-MPM3695-10-A

Overview

EVKT-MPM3695-10-A from Monolithic Power Systems is an evaluation kit for the MPM3695-10 scalable, ultra-thin (2mm height), 16V input, 10A PMBus-enabled DC/DC power module. It includes the EVM3695-10-MQ-10A single-phase evaluation board, one pre-configured MPM3695GMQ-10-0022 module, and the EVKT-USBI2C-02 USB-to-PMBus interface - enabling full telemetry readback (VIN, VOUT, IOUT, temperature, faults) and real-time configuration of output voltage, soft-start, OCP/OVP/OTP thresholds, and switching frequency. Designed for FPGA/ASIC core rail validation in space-constrained telecom and server applications.

For engineers reviewing the EVKT-MPM3695-10-A datasheet, EVKT-MPM3695-10-A pinout, EVKT-MPM3695-10-A application, or EVKT-MPM3695-10-A equivalent, this kit delivers out-of-box PMBus-based power system characterization, multi-phase scalability verification, thermal derating analysis, and configurable protection threshold testing - all with traceable factory-default register settings (0022) and virtual bench GUI support.

Technical Context

The EVKT-MPM3695-10-A implements a complete reference design for the MPM3695-10's proprietary multi-phase constant-on-time (MCOT) control architecture, supporting both single-phase operation and cascaded master-slave configurations up to six phases. Its PCB layout adheres to strict high-current routing rules for PGND/VOUT planes and remote sense trace routing (VOSNS+/VOSNS−) to preserve ±0.5% load/line regulation accuracy.

Hardware integration includes dedicated test points for VIN, VOUT, IOUT, and temperature monitoring; on-board 22µF/25V and 4×47µF ceramic output capacitors; and configurable ADDR, CTRL, and PG pull-up/pull-down networks. The included EVKT-USBI2C-02 interface enables full PMBus 1.3 compliance (10–1000 kHz), including alert-driven fault capture and non-volatile memory (MTP) register programming.

Key Specifications

Availability

EVKT-MPM3695-10-A is available at Aetrix Electronics and suitable for FPGA power validation, server VR13/VR14 subsystem prototyping, and telecom baseband power architecture development requiring stable component supply, repeatable lab characterization, and production-ready PMBus firmware integration.

Supply support for EVKT-MPM3695-10-A 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 over two decades of expertise in DC/DC conversion, PMBus digital control, and thermally optimized power packaging.

The MPM3695 product line targets high-density, high-reliability power delivery for advanced computing and networking systems - specifically engineered to replace discrete buck controllers + MOSFETs + inductors with a fully integrated, ultra-thin, digitally configurable module.

FAQ

What hardware is included in the EVKT-MPM3695-10-A kit?

The kit contains one EVM3695-10-MQ-10A evaluation board, one MPM3695GMQ-10-0022 module (pre-flashed with register code 0022), and one EVKT-USBI2C-02 USB-to-PMBus adapter with cables. No external power supply or load is included - users must provide a 3.3–16V input source and appropriate electronic load for testing.

Can the EVKT-MPM3695-10-A support multi-phase operation out of the box?

Yes - the EVM3695-10-MQ-10A board includes all necessary PASS/TAKE/SET/ADDR routing and jumpers to configure master-slave cascading. Two boards can be interconnected directly using ribbon cables per MPS Application Note AN-142; no additional hardware is required to validate dual-phase current sharing or auto-interleaving behavior.

Does the kit include software and GUI tools?

Yes - Virtual Bench V3.0 GUI software is available for free download from the MPS website. It supports real-time telemetry plotting, register read/write, fault logging, and configuration export/import. The EVKT-USBI2C-02 interface is natively recognized; no driver installation is needed on Windows 10/11 or Linux.

What is the purpose of the "0022" configuration code on the included module?

"0022" is the factory-default MTP register setting for the MPM3695-10, defining nominal values for output voltage (1.2V), soft-start time (2ms), OCP limit (10.5A), OVP threshold (115% VREF), and PWM mode. Full register map and configuration guidance are documented in Tables 6–7 of the MPM3695-10 datasheet Rev. 1.0.

Is remote voltage sensing implemented on the evaluation board?

Yes - the EVM3695-10-MQ-10A provides dedicated VOSNS+ and VOSNS− pads with Kelvin traces routed directly to the load point. These are pre-connected via 0Ω resistors; removing them disables remote sense and defaults to local feedback. Layout follows MPS recommendations: no vias on sense traces, direct connection to AGND at load GND plane.

How is thermal performance validated on this kit?

The kit documentation includes infrared thermal images captured at 10A/1.2V, 25°C ambient, no airflow or heatsink - confirming junction temperature remains below 125°C under steady-state conditions. Board layout uses 2oz copper on PGND/VOUT layers and thermal vias under the LGA-45 footprint to achieve θJA = 17.06°C/W as measured on the EVM.