Monolithic Power Systems Inc. EV2316-D-00A

Overview

EV2316-D-00A from Monolithic Power Systems is a fully assembled evaluation board for the MP2316GD synchronous step-down converter, demonstrating 3A continuous output at 1.2V from a 4–19V input, featuring constant-on-time control, 40μA quiescent current, and QFN14 (2mm×3mm) packaging. It supports PWM/PFM mode selection, programmable soft-start, power-good indication, and hiccup-mode short-circuit protection - validated for use in battery-powered SSDs and tablet PCs.

For engineers reviewing the EV2316-D-00A datasheet, EV2316-D-00A pinout, EV2316-D-00A application, or EV2316-D-00A equivalent, this board enables rapid validation of MP2316GD's fast transient response, light-load efficiency scaling, thermal shutdown behavior, and layout-sensitive switching performance under real-world 12V→1.2V/3A conditions.

Technical Context

The EV2316-D-00A implements the MP2316GD IC in a fixed 1.2V output configuration with external feedback resistors omitted (R3–R5 installed), using a 2.2μH shielded inductor (Wurth 744311220), dual 22μF ceramic output capacitors (1206 X7R), and 0.1μF input bypassing. It supports both forced PWM (via R6) and auto PFM/PWM (via R7) operation modes.

Test conditions are explicitly defined: VIN = 12V, VOUT = 1.2V, L = 2.2μH, TA = 25°C. Layout follows four-layer PCB guidelines - inner layers as solid ground planes - to minimize SW node ringing and ensure stable regulation under dynamic load steps.

Key Specifications

Availability

EV2316-D-00A is available at Aetrix Electronics and suitable for SSD power rail validation, tablet SoC core voltage testing, and gaming peripheral DC-DC design requiring stable component supply, fast engineering access, and production-representative layout fidelity.

Supply support for EV2316-D-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 ISO 9001-certified quality systems and global distribution.

The MP2316 product line targets ultra-low-IQ, high-efficiency point-of-load conversion for portable and always-on applications - optimized for battery life extension and compact PCB area in space-constrained consumer electronics.

FAQ

What input voltage range is supported on the EV2316-D-00A?

The board accepts 4V to 19V DC input, matching the MP2316GD's full operating range. It has been tested at 12V nominal with 1.2V/3A output, and supports transient surges up to 20V per MPS specification. Input filtering uses a 0.1μF ceramic capacitor placed adjacent to the VIN/GND pins.

How do I configure forced PWM versus auto PFM/PWM mode?

Install 0Ω jumper Rb and populate R6 (40.2kΩ) to enable forced PWM mode; remove R6 and install R7 (180kΩ) to activate auto PFM/PWM mode. Mode selection directly configures the MP2316GD's internal control logic - no firmware or external signal required.

Does the board include a power-good indicator?

Yes - the MP2316GD's PG pin is routed to test point TP3 and remains unpopulated by default. A pull-up resistor (not installed) is required to interface with host system monitoring; the IC asserts PG high when VOUT is within ±8% of 1.2V and no faults are present.

What is the recommended inductor and why?

The board uses Wurth 744311220: a 2.2μH, shielded SMD inductor with 11.4mΩ DCR and 13A saturation current. Its low DCR minimizes conduction loss at 3A, while shielding contains EMI and prevents coupling into feedback traces - critical for COT stability.

Can I adjust the output voltage?

No - the EV2316-D-00A is configured for fixed 1.2V output using the MP2316GD's internal feedback divider. To change VOUT, replace U1 with a version supporting external feedback (e.g., MP2316DR) and add R1/R2 per datasheet Figure 10; the current board lacks FB resistor pads.

Is thermal performance characterized on this board?

Yes - thermal shutdown is active and verified. At 3A/12V input, the MP2316GD case temperature reaches ~65°C in still air with the standard 2-layer copper pour. Full derating data and IR images are provided in the Rev. 1.0 evaluation report (Page 3–4).