Monolithic Power Systems Inc. EVM3632S-PQ-01A

Overview

EVM3632S-PQ-01A from Monolithic Power Systems is an evaluation board for the MPM3632SGPQ synchronous step-down Mini-Module regulator, delivering 3A continuous output at 3.3V from a 4V–18V input. It integrates power MOSFETs, inductor, and input/output capacitors in a 3mm × 3mm × 1.45mm LGA package, operates at 2.2MHz fixed-frequency COT control, and includes over-voltage, hiccup OCP, and thermal shutdown protection.

For engineers reviewing the EVM3632S-PQ-01A datasheet, EVM3632S-PQ-01A pinout, EVM3632S-PQ-01A application, or EVM3632S-PQ-01A equivalent, this board enables rapid validation of high-density 18V/3A DC/DC conversion in space-constrained industrial and medical systems requiring fast transient response and low quiescent current (500μA).

Technical Context

The EVM3632S-PQ-01A implements the MPM3632SGPQ IC in a fully assembled, tested PCB layout optimized for thermal performance and EMI reduction. It supports forced continuous conduction mode (CCM), programmable soft-start via external capacitor, and power-good indication with 0.5% output voltage accuracy.

Test data confirms 90% peak efficiency at 12V_IN/3.3V_OUT/3A load, <±0.1% line regulation across 4–18V input, and <±0.1% load regulation from 0.01A to 3A - all measured per MPS Rev. 1.1 test conditions at +25°C.

Key Specifications

Availability

EVM3632S-PQ-01A is available at Aetrix Electronics and suitable for industrial embedded power validation, medical imaging subsystem testing, and distributed telecom power architecture prototyping requiring stable component supply and documented thermal performance.

Supply support for EVM3632S-PQ-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 analog semiconductor company specializing in high-efficiency power management ICs, with over two decades of leadership in integrated DC/DC modules and power stage solutions.

The MPM3632S product line targets ultra-compact, high-reliability point-of-load regulation in space- and thermal-constrained applications such as server VRMs, portable medical devices, and FPGA auxiliary rails.

FAQ

What is the primary function of the EVM3632S-PQ-01A?

This board is a ready-to-use evaluation platform for the MPM3632SGPQ integrated DC/DC module. It provides immediate hardware access to all critical signals - VIN, VOUT, EN, PG, and GND - enabling functional verification, efficiency measurement, thermal profiling, and transient response analysis without layout design or component sourcing.

Can the output voltage be adjusted on this board?

Yes. The default 3.3V output is set by R1 (40.2kΩ) and R2 (13kΩ) forming a feedback divider. Replacing either resistor recalculates VOUT using the formula VOUT = 0.8V × (1 + R1/R2). The board includes test points and footprint pads for direct resistor replacement without trace cutting.

Does the board support enable/disable sequencing and power-good monitoring?

Yes. The EN pin accepts 1.2V–VIN logic-high to activate regulation and <1V to disable it with controlled soft-stop. The PG pin asserts high when VOUT reaches 90% of target and remains asserted during regulation - both signals are routed to 0.1" headers and test points for oscilloscope or controller interfacing.

What thermal performance can be expected under full 3A load?

At VIN=12V, VOUT=3.3V, and TA=+25°C, the board exhibits ≤45°C temperature rise above ambient at 3A steady-state load, verified via IR imaging and thermocouple measurements on the MPM3632SGPQ LGA package and PCB copper planes per MPS Rev. 1.1 test report.

Is the EVM3632S-PQ-01A RoHS-compliant and halogen-free?

Yes. All components on the board - including the MPM3632SGPQ IC, Murata capacitors, and Yageo resistors - meet RoHS Directive 2011/65/EU and are certified halogen-free per IEC 61249-2-21. MPS publishes full material declarations on its Quality Assurance portal.

How does this evaluation board differ from the EVM3632S-PQ-00A?

The EVM3632S-PQ-01A replaces the obsolete EVM3632S-PQ-00A with updated layout revisions addressing thermal hotspots, improved ground plane integrity, and enhanced high-frequency noise suppression. It retains identical electrical functionality, Bill of Materials, and test point locations for seamless migration.