Monolithic Power Systems Inc. EVM3632C-QV-00B

Overview

EVM3632C-QV-00B from Monolithic Power Systems is an evaluation board for the MPM3632C synchronous step-down DC/DC module, designed to deliver up to 3A continuous output at 3.3V from a 12V input, operating at 3MHz with COT control and integrated OVP/OCP/thermal shutdown protection.

For engineers reviewing the EVM3632C-QV-00B datasheet, EVM3632C-QV-00B pinout, EVM3632C-QV-00B application, or EVM3632C-QV-00B equivalent, this board enables rapid validation of the MPM3632C's performance in space-constrained point-of-load designs for FPGAs, ASICs, and medical imaging systems.

Technical Context

The EVM3632C-QV-00B implements the MPM3632C QFN-20 (3mm×5mm×1.6mm) module, which integrates power MOSFETs, an inductor, and three capacitors into a single package. It supports 4–18V input and delivers adjustable output from 0.8V with fixed 3.3V configuration on this board.

Constant-on-time (COT) control ensures fast transient response under dynamic load changes, while forced continuous conduction mode (CCM) minimizes output voltage ripple. The board includes a Power Good (PG) indicator and hiccup-mode over-current protection.

Key Specifications

Availability

EVM3632C-QV-00B is available at Aetrix Electronics and suitable for FPGA power delivery, medical imaging subsystems, and distributed point-of-load applications requiring stable component supply and rapid prototyping capability.

Supply support for EVM3632C-QV-00B 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 analog and power ICs, with design centers across Asia and North America and global manufacturing partnerships.

The MPM3632C product line targets ultra-compact, high-efficiency DC/DC conversion for space-constrained digital loads, integrating full power stage and control in a QFN module to eliminate layout sensitivity and reduce design cycle time.

FAQ

What input voltage range is supported by the EVM3632C-QV-00B?

The board supports 4V to 18V DC input, matching the MPM3632C module's rated operating range. Testing per the reference design uses 12V input at 25°C ambient, and the board includes reverse-polarity protection via input capacitor placement and layout isolation.

Can the output voltage be adjusted on this evaluation board?

Yes - VOUT is set to 3.3V by default using R2 (24kΩ) and R3/R6 (100kΩ each) in the feedback divider, but the board allows rework of R2 to support outputs from 0.8V to VIN × 0.9, per the MPM3632C's internal reference and resistor-divider equation.

Does the EVM3632C-QV-00B include a Power Good (PG) signal?

Yes - the PG pin (Pin 19 of MPM3632C) is routed to test point TP3 and labeled "PG" on the silkscreen. It asserts high when VOUT is within ±7.5% of regulation, with 1ms typical delay after startup and active-low fault indication during OVP/OCP events.

What is the physical size and layer count of the EVM3632C-QV-00B PCB?

The board measures 64mm × 64mm × 1.6mm and uses a 4-layer stack-up (Top, Mid1, Mid2, Bottom), with dedicated ground and power planes to minimize noise coupling and support 3A steady-state current with <15°C temperature rise under full load.

How is thermal performance validated on this evaluation board?

Thermal validation was performed per MPS Rev. 1.0 test report at VIN=12V, VOUT=3.3V, IOUT=3A, TA=25°C, showing peak module case temperature of 72°C and PCB copper temperature rise ≤12°C - achieved via exposed thermal pad soldering and internal copper pour on all layers beneath the QFN-20 footprint.

Is the EVM3632C-QV-00B RoHS-compliant and lead-free?

Yes - all components on the board, including the MPM3632CGQV module and passive parts (Murata GRM21BR61E106MA73L, TDK C2012X5R1C226K, YAGEO RC0402FR series), are RoHS-compliant, lead-free, and halogen-free per MPS green status documentation and manufacturer declarations.