Monolithic Power Systems Inc. EV2329C-G-00A

Overview

EV2329C-G-00A from Monolithic Power Systems is an evaluation board for the MP2329C synchronous buck converter IC, designed to validate 3.3V/6.5A power delivery in compact DC-DC applications. It implements forced continuous conduction mode (CCM), features adaptive constant-on-time (COT) control, remote differential sensing, and integrates low-R_DS(ON) MOSFETs in a QFN-11 (2mm × 2mm) package.

For engineers reviewing the EV2329C-G-00A datasheet, EV2329C-G-00A pinout, EV2329C-G-00A application, or EV2329C-G-00A equivalent, this board enables rapid validation of input voltage range (8–24V), efficiency performance at 700kHz switching frequency, load transient response up to 2.5A/µs, and protection behavior under OCP/OVP/UVP/thermal shutdown conditions.

Technical Context

The EV2329C-G-00A implements the MP2329C's proprietary adaptive COT control architecture with DC auto-tune loop compensation and remote differential voltage sensing across the output capacitor. This configuration delivers ±0.5% load regulation and fast transient recovery (<10µs) under 3A–6.5A step loads.

It supports forced PWM operation across full load range, eliminates diode conduction loss via synchronous rectification, and maintains stable regulation using POSCAP and ceramic output capacitors. The board's layout separates AGND and PGND planes, with dedicated high-current paths for SW, VIN, and VOUT nodes.

Key Specifications

Availability

EV2329C-G-00A is available at Aetrix Electronics and suitable for laptop computer power validation, server VRM prototyping, and networking system point-of-load development requiring stable component supply, traceable evaluation hardware, and documented thermal and transient performance.

Supply support for EV2329C-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MP2329C product line targets space-constrained, high-efficiency DC-DC conversion in portable and infrastructure equipment, emphasizing low IQ, fast transient response, and minimal external component count.

FAQ

What input voltage range does the EV2329C-G-00A support?

The board operates with 8V to 24V DC input, verified per Rev. 1.0 test report. Input ripple is measured at <20mV_AC under 6.5A load at 19V input. EN threshold is set to 7.5V rising via R7 (453kΩ); for 5V input, R7 must be changed to 200kΩ as specified in schematic note.

How is output voltage accuracy maintained under load variation?

Voltage accuracy is ensured by remote differential sensing across the output capacitor (C2B/C2C/C2D), combined with DC auto-tune loop compensation. Test data shows ±0.5% load regulation from 0A to 6.5A at 19V input, with <10µs recovery time for 3A–6.5A load steps.

Does the board support enable/disable sequencing with external logic?

Yes - the EN pin accepts TTL-compatible signals: drive >1.4V to enable, <0.4V to disable. Absolute max EN voltage is 4.5V. Startup and shutdown waveforms are documented in Figures 5–8, showing clean VOUT ramp-up/down and PG assertion timing synchronized to EN transitions.

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

At 19V input and 3.3V/6.5A output, junction temperature rise is ≤25°C above ambient (25°C) per thermal imaging in Rev. 1.0 test report. The QFN-11 IC uses exposed thermal pad soldered to inner copper layers; board layout follows MPS-recommended thermal land pattern (Figure 1–4).

Which output capacitors are used and why are they critical?

The board uses three 22µF X5R 0805 ceramic capacitors (C2B/C2C/C2D) plus one 0.22µF X7R 0603 (C3) for high-frequency decoupling. These meet the stability requirement for POSCAP and ceramic caps per datasheet, minimizing output ripple (<200mV_PP) and supporting fast transient response without LC resonance issues.

Is short-circuit protection tested and how does recovery behave?

Short-circuit entry and recovery are validated in Figures 13–14. Under 0A load, the board enters hiccup-mode current limiting within 5ms and recovers fully within 5ms after fault removal, with no latch-up or manual reset required. PG signal remains deasserted during fault.

Can the board be used with different output voltages?

No - the MP2329C on this board is factory-configured for 3.3V output via internal feedback. External resistor dividers are not populated; changing VOUT requires replacing U1 with a different MP2329C variant or using a custom board with adjustable FB network.