Monolithic Power Systems Inc. EV2263-D-00A

Overview

EV2263-D-00A from Monolithic Power Systems is an evaluation board for the MP2263GD synchronous step-down converter, demonstrating a 30V-input, 3A-output DC/DC power supply with 1μA shutdown current, 500kHz switching frequency, and QFN-15 (2mm×3mm) package integration. It supports battery-powered systems requiring wide-input-range regulation and low-quiescent-current operation.

For engineers reviewing the EV2263-D-00A datasheet, EV2263-D-00A pinout, EV2263-D-00A application, or EV2263-D-00A equivalent, this board enables rapid validation of MP2263GD performance in 3.3V/3A power rails, efficiency testing across 12V–19V input, soft-start tuning, and forced-PWM vs. auto PFM mode selection under real load transients.

Technical Context

The EV2263-D-00A implements the MP2263GD IC in a fully assembled, tested layout with 4.7μH power inductor (Wurth 744311470), input/output ceramic capacitors (10μF/22μF X5R), and precision feedback resistors (R2=324kΩ, R3=165kΩ) setting VOUT=3.3V. It supports external soft-start via C3 (12nF) and power-good monitoring via U1's PG pin.

Test conditions are defined per MPS Rev.1.0 documentation: VIN=12V, VOUT=3.3V, FSW=500kHz, TA=25°C, BIAS/MODE tied to GND. The board delivers verified 3A continuous output with hiccup-mode OCP and thermal shutdown-mirroring production-level protection behavior of the MP2263GD.

Key Specifications

Availability

EV2263-D-00A is available at Aetrix Electronics and suitable for battery-powered systems, smart-home edge nodes, wide-input-range industrial power supplies, and standby power rails requiring stable component supply, fast design validation, and production-ready reference schematics.

Supply support for EV2263-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 core expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The MP2263 product line targets ultra-low-I_Q power management in space-constrained, battery-sensitive applications-designed to replace discrete buck solutions with integrated MOSFETs, internal compensation, and robust protection in sub-3mm² QFN packages.

FAQ

What input voltage range is supported on the EV2263-D-00A?

The board supports 3.3V to 30V input per the MP2263GD specification. Default test conditions use 12V, but operation up to 30V is validated with appropriate input capacitance (C1A/C1B = 10μF each, 50V rating) and thermal derating above 24V.

How is output voltage set, and can it be adjusted?

VOUT is set to 3.3V by the R2 (324kΩ) and R3 (165kΩ) feedback divider. Yes-it is adjustable: replacing R2/R3 with values satisfying VOUT = 0.8V × (1 + R2/R3) recalibrates output; the board includes test points for easy resistor swapping.

Does the board implement all MP2263GD protection features?

Yes. The EV2263-D-00A demonstrates hiccup-mode over-current protection (OCP) and thermal shutdown (TSD) as implemented in the MP2263GD. These activate under sustained overload or elevated junction temperature and are observable via output dropout and PG pin deassertion.

What is the purpose of the MODE and BIAS pins on the board?

MODE selects PWM-only or auto PFM/PWM operation; BIAS supplies internal LDO bias for improved light-load efficiency. Both are pulled to GND by default. Leaving them unconnected or floating may cause unstable regulation or increased I_Q.

Can the EV2263-D-00A be used for 5V output designs?

Yes. Replace R2/R3 to set VOUT=5V (e.g., R2=619kΩ, R3=100kΩ), confirm inductor saturation margin (≥5A peak), and verify output capacitor ripple rating. The board's layout and component footprints support this reconfiguration without modification.

Is the EN pin accessible and what logic levels enable the regulator?

Yes-the EN pin is brought out to a test point. Drive EN ≥1.05V to enable regulation; ≤0.93V disables the converter. This allows external microcontroller control or manual toggle via jumper or pushbutton.