Monolithic Power Systems Inc. EV2176-L-00A

Overview

EV2176-L-00A from Monolithic Power Systems is an evaluation board for the MP2176GL monolithic synchronous step-down converter, delivering 6A continuous output at 1.2V from a 3–6V input. It implements Constant-On-Time (COT) control, features ground-referenced enable logic, and supports programmable soft start and pre-bias startup - used to validate power delivery in telecom base station and server point-of-load designs.

For engineers reviewing the EV2176-L-00A datasheet, EV2176-L-00A pinout, EV2176-L-00A application, or EV2176-L-00A equivalent, this board enables rapid validation of MP2176GL performance under real load transients, input line regulation, thermal behavior, and enable sequencing in high-density DC/DC applications.

Technical Context

The EV2176-L-00A implements the MP2176GL IC in a fully assembled, tested layout with optimized 1.0µH power inductor (TOKO FDU1250C-1R0M), low-ESR ceramic output capacitors (22µF ×7, 4.7µF, 1µF), and precision feedback resistors. Input filtering includes eight 22µF X7R 1210 MLCCs and decoupling down to 10pF.

It operates at fixed 600kHz switching frequency with adaptive COT control, enabling sub-10µs load transient response at 6A step change. The board's remote ON/OFF input accepts 0–0.4V (off) and >2V (on) logic-level signals referenced to GND, compatible with FPGA I/O and microcontroller GPIOs.

Key Specifications

Availability

EV2176-L-00A is available at Aetrix Electronics and suitable for telecom base station power validation, server point-of-load prototyping, and flat-panel display DC/DC subsystem testing requiring stable component supply and documented thermal performance.

Supply support for EV2176-L-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 over two decades of expertise in DC/DC conversion, motor drivers, and LED lighting controllers.

The EV2176-L-00A belongs to MPS's evaluation board product line, designed specifically to accelerate design-in of their MP2176GL synchronous buck converters in high-current, space-constrained infrastructure applications.

FAQ

What input voltage range does the EV2176-L-00A support?

The board supports 3 V to 6 V DC input, matching the MP2176GL's operational range. It has been tested at 5 V nominal with full 6 A load, demonstrating <±0.5% line regulation and <10 mV ripple under steady state per the Rev. 1.0 test report.

Can the output voltage be adjusted, and how?

Yes - VOUT is set by the R1/R2 feedback divider network (10 kΩ each by default for 1.2 V). Per the MP2176GL datasheet, changing R1/R2 adjusts VOUT = 0.6 V × (1 + R1/R2); recommended capacitor values scale with output voltage per application note AN-109.

Does the board support pre-bias startup?

Yes - the MP2176GL IC on this board supports pre-bias startup, allowing the output capacitor to be pre-charged before enable. This prevents reverse current flow and ensures controlled ramp-up when powering downstream ASICs or FPGAs with stored charge.

What is the purpose of the VINSENSE and VOUTSENSE terminals?

VINSENSE and VOUTSENSE provide Kelvin sensing points for accurate input/output voltage monitoring, minimizing PCB trace resistance errors. They connect directly to the MP2176GL's internal sense amplifiers, enabling precise regulation under high-current conditions.

Is thermal performance characterized on this board?

Yes - thermal imaging data in the Rev. 1.0 report shows peak IC junction temperature of 78°C at 6 A, 5 V input, 25°C ambient, with natural convection only. The QFN3×4 package is soldered to a 4-layer board with internal copper planes for heat spreading.

How is the switching frequency configured?

Default frequency is 600 kHz, set by an internal resistor. It can be adjusted from 300 kHz to 1 MHz using an external resistor connected between RT and GND, as specified in the MP2176GL datasheet Section 8.2.1 - no hardware modification of the EV2176-L-00A is required.