Monolithic Power Systems Inc. EV2276-D-00A

Overview

EV2276-D-00A from Monolithic Power Systems is an evaluation board for the MP2276GD synchronous step-down converter, delivering 8A continuous output at 1V from a 4–16V input. It implements adaptive constant-on-time (COT) control, supports selectable 600/1100/2000kHz switching, and features programmable soft-start (1.7ms+), hiccup OCP, and pre-bias startup - validated in digital set-top box power rails.

For engineers reviewing the EV2276-D-00A datasheet, EV2276-D-00A pinout, EV2276-D-00A application, or EV2276-D-00A equivalent, this board enables rapid validation of MP2276GD's transient response, light-load efficiency modes (pulse-skip vs. forced CCM), and layout-sensitive thermal performance under 8A DC and dynamic load steps up to 2.5A/µs.

Technical Context

The EV2276-D-00A implements the MP2276GD IC in a fixed 1V output configuration using a 1µH shielded inductor (Wurth 744311100), zero-ESR-compatible ceramic output capacitance (5×22µF X5R 0805), and ground-referenced EN control. Its PCB layout follows 4-layer thermal management with dedicated PGND and AGND planes per MPS design guidelines.

Test data confirms <±0.1% load regulation across 0–8A at V_IN = 5/12/16V, <±0.1% line regulation over full input range at I_OUT = 0.01–8A, and case temperature rise ≤35°C at 8A ambient (25°C). Startup time is <1ms with pre-bias capability and controlled via EN or VIN ramp.

Key Specifications

Availability

EV2276-D-00A is available at Aetrix Electronics and suitable for digital TV power subsystem validation, FPGA core voltage qualification, and distributed point-of-load (POL) prototyping requiring stable component supply, repeatable thermal characterization, and fast-turn evaluation of high-current buck converters.

Supply support for EV2276-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MP2276 product line targets high-density, high-efficiency POL conversion in space-constrained consumer and computing systems - designed specifically for sub-1V core rails with aggressive transient requirements and minimal external component count.

FAQ

What input voltage range is supported, and what happens below 4V?

The EV2276-D-00A operates only within 4–16V input. Below 4V, the MP2276GD UVLO triggers and disables switching; no regulated output is generated. The board lacks boost or charge-pump circuitry to extend low-voltage operation.

How is output voltage adjusted, and what is the minimum achievable value?

V_OUT is set by R1 (2kΩ) and R2 (8.06kΩ) to 1V using the 0.8V internal reference. Replacing R1/R2 allows adjustment down to 0.8V - the absolute minimum defined by the MP2276GD's feedback reference voltage and internal divider architecture.

Does the board support remote enable/disable, and what logic thresholds apply?

Yes - the EN pin accepts ground-referenced TTL/CMOS signals. Driving EN >1.27V enables regulation; <0.93V disables it. The threshold hysteresis prevents chatter near the transition point, and the pin draws <1µA quiescent current.

What is the purpose of the JP1 jumper, and which configurations are verified?

JP1 selects both switching frequency (600/1100/2000kHz) and light-load mode (pulse-skip or forced CCM). All three frequency options and both modes are fully tested per Rev.1.0 documentation, with efficiency curves and transient waveforms provided for each.

Can the board be used with non-1V output configurations, and what changes are required?

Yes - change R1 and R2 per the MP2276GD datasheet's V_OUT equation. Inductor (L1) and output capacitors remain valid for outputs ≥0.8V. No PCB modification is needed; only resistor replacement and optional JP1 reconfiguration for optimal frequency selection.

Is thermal performance characterized, and what cooling method is assumed?

Case temperature rise is measured on a standard 4-layer evaluation PCB (7.75cm × 8.13cm) with natural convection only - no heatsink or forced airflow. At 8A, rise is ≤35°C above 25°C ambient, confirming adequate copper area and thermal via placement for most POL applications.