Monolithic Power Systems Inc. EV2329-G-00A

Overview

EV2329-G-00A from Monolithic Power Systems is an evaluation board for the MP2329 synchronous step-down converter IC, designed to validate 3.3V/6.5A power delivery in compact DC/DC applications. It implements the MP2329GG QFN-11 (2mm × 2mm) IC with adaptive COT control, remote differential sensing, and full protection (OCP/OVP/UVP/thermal shutdown), targeting high-efficiency point-of-load conversion in space-constrained systems.

For engineers reviewing the EV2329-G-00A datasheet, EV2329-G-00A pinout, EV2329-G-00A application, or EV2329-G-00A equivalent, this board enables rapid validation of input range (8–24V), transient response under 3A→6A load steps, startup/shutdown timing, short-circuit recovery, and efficiency across VIN=5/12/19V at VOUT=3.3V.

Technical Context

The EV2329-G-00A implements the MP2329's proprietary Adaptive Constant-On-Time (COT) control architecture, enabling sub-10µs load transient response without external compensation. Its DC auto-tune loop dynamically adjusts internal gain based on output capacitor ESR and capacitance, while remote differential sense (FB/AGND pins) maintains ±0.5% load regulation across PCB trace resistance up to 50mΩ.

Board-level design integrates a 2.2µH/14A inductor (Wurth 74437349022), 22µF POSCAP/ceramic output capacitors, and low-RDS(ON) internal MOSFETs-achieving peak efficiency of 95% at 19V_IN/3.3V_OUT/3A and maintaining >85% down to 0.1A load. Power Good (PG) signal asserts after soft-start completion and VOUT regulation verification.

Key Specifications

Availability

EV2329-G-00A is available at Aetrix Electronics and suitable for laptop computer power rails, server point-of-load conversion, and networking system intermediate bus regulation requiring stable component supply, pre-validated layout, and production-ready thermal performance.

Supply support for EV2329-G-00A 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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MP2329 product line targets ultra-compact, high-efficiency buck converters for portable and infrastructure equipment where low quiescent current (105µA), small footprint, and fast transient response are critical design constraints.

FAQ

What input voltage range is validated on the EV2329-G-00A board?

The board is fully characterized across 8V to 24V input, with published efficiency curves and transient waveforms at 5V, 12V, and 19V. The EN resistor divider sets a 7.5V VIN rising threshold; for 5V-only use, R7 must be changed to 200kΩ per the schematic note.

How is output voltage accuracy maintained under varying load and temperature?

VOUT accuracy relies on the MP2329's internal 0.6V reference, remote differential sensing (FB/AGND), and DC auto-tune loop. Test data shows ±0.5% regulation from 0.1A to 6.5A load and stability over –40°C to +85°C ambient, verified via thermal chamber testing.

Does the board support adjustable output voltage?

No-the EV2329-G-00A is fixed at 3.3V via 40.2kΩ/8.87kΩ FB resistor divider. Output voltage adjustment requires replacing R1 and R2; the MP2329 datasheet provides the formula VOUT = 0.6V × (1 + R1/R2) for custom configurations.

What thermal performance can be expected during continuous 6.5A operation?

At 19V_IN/3.3V_OUT, the board achieves 95% peak efficiency and maintains <65°C case temperature on a 2-layer 1oz Cu board with no forced airflow, per Rev. 1.0 test report. Thermal imaging confirms hotspot localization at U1 and L1.

Is Power Good (PG) assertion synchronized to output regulation?

Yes-PG goes high only after soft-start completes and VOUT reaches 90% of target (2.97V) for ≥1ms, as confirmed by oscilloscope capture in the startup test section. PG remains asserted until VOUT drops below 75% (2.475V) or thermal shutdown triggers.

Can the board be used with ceramic or polymer output capacitors?

Yes-the design is validated with both 22µF X5R ceramics (C2B/C2C/C2D) and POSCAPs. The MP2329's stability architecture supports ESR as low as 1mΩ, eliminating need for bulk electrolytics and enabling full ceramic solutions.