Monolithic Power Systems Inc. EV8862-Q-00A

Overview

EV8862-Q-00A from Monolithic Power Systems is an evaluation board for the MP8862 synchronous 4-switch buck-boost converter IC, designed to validate USB PD sourcing port designs with I²C-programmable output voltage (1V–20.47V), 2A output current, and 2.8V–22V input range on a 6.35cm × 6.35cm four-layer PCB.

For engineers reviewing the EV8862-Q-00A datasheet, EV8862-Q-00A pinout, EV8862-Q-00A application, or EV8862-Q-00A equivalent, this board enables rapid validation of MP8862's I²C-configurable constant-current limit, hiccup-mode OVP/SCP, COT/Coff control transitions, and line-drop compensation in real-world buck-boost bus supply scenarios.

Technical Context

The EV8862-Q-00A implements the MP8862GQ-0000 IC in QFN-16 (3mm×3mm) package with integrated high-side and low-side MOSFETs per switch leg, supporting seamless buck-to-boost mode transition at 500kHz switching frequency under forced PWM or auto PFM/PWM operation.

It provides full I²C register access-including OTP configuration, EN shutdown discharge, soft-start timing (900μs default), and programmable OCP threshold-via SCL/SDA pins and ALT-address selection, with dedicated OC sense resistor (21.5kΩ) and VOUT/VIN/GND test points for dynamic load transient analysis.

Key Specifications

Availability

EV8862-Q-00A is available at Aetrix Electronics and suitable for USB PD sourcing port development, industrial buck-boost bus supplies, embedded system power validation, and I²C-configurable DC-DC reference design requiring stable component supply and traceable evaluation hardware.

Supply support for EV8862-Q-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 global design centers and ISO-certified manufacturing partners.

The MP8862 product line targets USB Power Delivery compliant power sources and wide-input industrial bus converters, emphasizing I²C configurability, fast transient response, and integrated protection for compact, reliable power subsystems.

FAQ

What is the primary function of the EV8862-Q-00A evaluation board?

The EV8862-Q-00A is a fully assembled and tested evaluation platform for the MP8862 buck-boost converter IC. It enables engineers to verify performance metrics-including efficiency vs. load, transient response, I²C register programming, and protection behavior-under real operating conditions without custom PCB design.

Does the board support both buck and boost modes simultaneously?

Yes-the MP8862 IC on this board uses constant-on-time (COT) control in buck mode and constant-off-time (Coff) in boost mode, enabling automatic seamless transition across VIN–VOUT crossover points. Test waveforms confirm stable 5V output with VIN ranging from 3.3V to 15V.

How is output current limiting configured on this board?

Output current limit is set via an external 21.5kΩ resistor (R2) connected to the OC pin, yielding a default 3A limit per OTP configuration table. The limit is adjustable through I²C register writes to the CC threshold, with internal sensing MOSFET eliminating need for external shunt resistors.

Can the board be used for USB PD compliance testing?

Yes-it supports USB PD 3.0 sourcing port requirements via I²C-programmable VOUT (1V–20.47V), accurate CC limit, line-drop compensation, and hiccup-mode fault recovery. Default 5V/2A output aligns with USB PD fixed PDO profiles, and OTP allows persistent configuration storage.

What are the key test points provided on the board?

The board includes dedicated test points for VIN, VOUT, GND, EN, ALT, ADD, OC, SCL, SDA, BST1, BST2, SW1, SW2, and AGND. These enable direct oscilloscope probing of switching node waveforms, feedback loop stability analysis, and I²C communication debugging without soldering.

Is thermal performance characterized in the documentation?

Yes-thermal shutdown and over-temperature warning thresholds are implemented per MP8862 specifications. Efficiency plots show >90% peak efficiency at 1A load (VIN=12V, VOUT=5V), and thermal imaging data confirms safe junction temperature rise under 2A continuous load with standard lab airflow.