Monolithic Power Systems Inc. EV8756-D-00A

Overview

EV8756-D-00A from Monolithic Power Systems is an evaluation board for the MP8756GD synchronous buck converter, designed to demonstrate 6A continuous output at 1V from a 12V input with 700kHz switching and 117μA quiescent current in ultrasonic mode. It supports fast transient response via Adaptive COT control and integrates DC Auto Tune loop compensation.

For engineers reviewing the EV8756-D-00A datasheet, EV8756-D-00A pinout, EV8756-D-00A application, or EV8756-D-00A equivalent, this board enables rapid validation of MP8756GD performance in high-current, low-IQ point-of-load designs for portable computing and distributed power systems.

Technical Context

The EV8756-D-00A implements the MP8756GD IC in a fixed 1V output configuration using R1 (48.7kΩ) and R2 (66.5kΩ) feedback divider, 0.68μH power inductor (Wurth 744311068), and six parallel 22μF X5R output capacitors. Input filtering includes three 22μF/35V ceramic capacitors and 100nF bypassing.

It operates across the full 4.5V–26V input range with thermal shutdown, hiccup-mode OCP/OVP/UVP protection, internal soft-start, and output discharge. The board uses QFN-12 (2mm×3mm) mounting with exposed thermal pad and optimized PCB layout per MPS layout guidelines.

Key Specifications

Availability

EV8756-D-00A is available at Aetrix Electronics and suitable for laptop computer power delivery, tablet PC core voltage regulation, and networking system point-of-load conversion requiring stable component supply and fast design validation cycles.

Supply support for EV8756-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 over two decades of leadership in DC/DC conversion and motor driver technology.

The EV8756-D-00A belongs to MPS's evaluation board product line, engineered specifically to accelerate development of high-efficiency, low-IQ buck converters for space-constrained, thermally sensitive applications such as mobile and edge infrastructure.

FAQ

What is the primary function of the EV8756-D-00A?

This board is a fully assembled, tested evaluation platform for the MP8756GD 6A synchronous buck converter. It provides immediate hardware access to all key signals-VIN, VOUT, EN, PG, BST, SW, FB-and enables real-world validation of efficiency, transient response, and protection behavior without custom PCB design.

Can the output voltage be adjusted, and how?

Yes. The default 1V output is set by R1 (48.7kΩ) and R2 (66.5kΩ). To change VOUT, replace R2 with a value calculated using VOUT = 0.6V × (1 + R1/R2), where 0.6V is the FB reference. R1 must remain within 47kΩ–100kΩ per datasheet guidance to maintain loop stability.

What input voltage should be used during initial testing?

The board is validated at 12V input per test reports, but supports 4.5V–26V. For safe startup, preset the supply to 12V before connection, ensure EN is pulled high, and confirm VIN and GND polarity. Input ripple must stay below 100mVpp to avoid false UVLO triggering.

Does the board include thermal management features?

Yes. The MP8756GD QFN-12 package is soldered to a large copper pour tied to internal ground planes, and the board layout follows MPS thermal guidelines-including thermal vias under the IC pad and minimized high-current loop area-to sustain 6A continuous load at ≤65°C ambient without forced airflow.

How is enable and power-good functionality accessed?

EN is brought out to a test point and accepts 1.2V–26V logic-high to activate regulation; pulling below 0.4V disables the converter. PG is open-drain and pulls low when VOUT is within ±10% of target for >1ms-wired to a header pin with 10kΩ pull-up for direct microcontroller monitoring.

Are all components on the BOM populated and verified?

All designated components are mounted and tested: two 22μF input caps (C1A/C1B), four 22μF output caps (C2C–C2F), plus C2B/C2G/C6 (0.1μF), C3 (0.22μF), C4 (1μF), C5 (220pF), L1 (0.68μH), and all resistors except R6/R7/R10 (marked NS). No substitutions are used-only TDK, ROYAL, and Wurth parts listed in the official BOM.