Monolithic Power Systems Inc. EVM3695-100-BH-00E

Overview

EVM3695-100-BH-00E from Monolithic Power Systems is a 16V-input, 800A-output scalable DC/DC power module evaluation board designed to demonstrate the MPM3695-100 digital power module. It integrates six or eight BGA-packaged MPM3695-100 modules (15mm × 30mm × 5.18mm), supports 1.2V output at up to 800A, operates from 4–16V input, and delivers 91% peak efficiency at 12V_IN/1.2V_OUT/50A per module.

For engineers reviewing the EVM3695-100-BH-00E datasheet, EVM3695-100-BH-00E pinout, EVM3695-100-BH-00E application, or EVM3695-100-BH-00E equivalent, this board enables rapid validation of high-current digital POL architectures, PMBus-based configuration via Virtual Bench Pro 4.0, transient load testing with integrated MOSFET-based dynamic circuit, and parallel-module thermal/power management in AI accelerators, GPU servers, and telecom baseband units.

Technical Context

The EVM3695-100-BH-00E implements a modular, digitally controlled DC/DC system using up to eight MPM3695-100 modules, each featuring integrated MOSFETs, driver, controller, and compensation in a single BGA package. It supports PMBus v1.3 communication over SCL/SDA for real-time register read/write, fault monitoring, and programmable V_OUT scaling via VOUT_SCALE_LOOP and VOUT_COMMAND registers.

Its transient test circuit uses dual ADA4891-1 op-amps driving N-channel MOSFETs (Q1/Q2) with selectable signal-generator or op-amp drive paths, 20mΩ sense resistors, and configurable slew-rate control via V_GS adjustment - enabling precise sub-100μs current-step testing without parasitic inductance artifacts from long load lines.

Key Specifications

Availability

EVM3695-100-BH-00E is available at Aetrix Electronics and suitable for AI accelerator power validation, GPU server VRM prototyping, and 5G baseband unit POL development requiring stable component supply, traceable sourcing, and lifecycle continuity.

Supply support for EVM3695-100-BH-00E 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 for industrial, computing, automotive, and telecom applications.

The EVM3695-100-BH-00E belongs to MPS's scalable digital power module evaluation platform, designed specifically to accelerate adoption of high-current, PMBus-configurable POL solutions in datacenter and edge infrastructure where density, efficiency, and digital control are critical.

FAQ

What is the difference between EVM3695-100-BH-00D and EVM3695-100-BH-00E?

EVM3695-100-BH-00D supports up to 600A output using six MPM3695-100 modules, while EVM3695-100-BH-00E supports up to 800A using eight modules. Both share identical board layout, PMBus interface, transient circuit design, and software compatibility with Virtual Bench Pro 4.0 - differing only in populated module count and corresponding input/output capacitor staging.

How is output voltage configured on the EVM3695-100-BH-00E?

V_OUT is set digitally via PMBus registers: first write gain (G_FB) to VOUT_SCALE_LOOP, then write target voltage to VOUT_COMMAND. The internal 0.6V reference scales accordingly. A hardware FB resistor divider (R7/R10) must be installed to match the desired V_OUT, as defined by V_REF = V_OUT × G_FB.

Which communication hardware is required to interface with Virtual Bench Pro 4.0?

The EVKT-USBI2C-02 USB-to-I2C adapter is mandatory. It connects via USB to the host PC and interfaces to the EVM3695-100-BH-00E's 10-pin PMBus header (SCL, SDA, VCC, GND). No additional level-shifting or custom firmware is needed - the GUI auto-detects connected MPM3695-100 modules after proper jumper and power sequencing.

Can the transient load circuit operate without an external op-amp?

Yes - the board supports direct signal-generator drive of Q1/Q2 by populating R128/R129 (bypassing U13/U14 op-amps). However, op-amp drive (via R130) is recommended for faster slew rates and improved gate-drive strength, especially for >100A/μs transients, due to the limited current sourcing capability of typical function generators.

What protection features are implemented on the EVM3695-100-BH-00E?

The board inherits all protections from the MPM3695-100 modules: overcurrent (OC), overvoltage (OV), undervoltage lockout (UVLO), overtemperature (OTP), and output short-circuit latch-off. Fault status is reported in real time via the PMBus FAULT_STATUS register and visualized as red indicators in the Virtual Bench Pro GUI's Fault/Status panel.

Is MTP memory programming supported on this evaluation board?

Yes - custom configurations (e.g., startup V_OUT, soft-start time, fault response) can be written to the MPM3695-100's multiple-time programmable (MTP) memory. This requires pulling CTRL low, applying VIN >10V, and clicking "Write ROM" in Virtual Bench Pro - ensuring settings persist across power cycles without reconfiguration.