Monolithic Power Systems Inc. EV2672A-D-00B

Overview

EV2672A-D-00B from Monolithic Power Systems is an evaluation board designed to demonstrate the MP2672A - a 2-cell series Li-ion/Li-polymer switch-mode boost charger IC with integrated MOSFETs, 2A configurable charge current, I²C programmability, and active cell-balancing capability. It supports host-control and standalone modes, delivers up to 95% CC/CV charge efficiency at 5V input, and enables safe charging across pre-charge, constant-current, and constant-voltage phases for portable POS terminals, Bluetooth speakers, and e-cigarette systems.

For engineers reviewing the EV2672A-D-00B datasheet, EV2672A-D-00B pinout, EV2672A-D-00B application, or EV2672A-D-00B equivalent, this board provides validated reference design, jumper-configurable battery regulation (8.4–8.8V), real-time I²C register access, thermal and overvoltage protection monitoring, and cell-balance function verification using PMID mid-point sensing on 2-cell packs.

Technical Context

The EV2672A-D-00B implements the MP2672A's dual-mode architecture: in standalone mode, charge voltage and current are set via resistive dividers (e.g., JP1–JP4 for 8.4–8.8V BATT_REG) and RISET (6.04kΩ → 2A). In host-control mode (JP5 connected), all parameters-including 0.5% accurate VBATT_REG, ICC, safety timer, and NTC profile-are configured via I²C registers using the MP2672A Evaluation Kit GUI software.

Board-level features include dedicated test points (VIN+, SW, SYS, BATT), 2.54mm jumpers for mode selection and cell balance enable (JP6), PMID connection for mid-cell voltage sensing, and dual LED indicators (LED1 blue = status, LED2 red = fault). The layout integrates 1.5µH power inductor (Wurth 744311150), 22µF output capacitor (Murata GRM31CR61C226KE15L), and 20mΩ current-sense resistor (Yageo RL2512FK-070R02L) for precision current monitoring.

Key Specifications

Availability

EV2672A-D-00B is available at Aetrix Electronics and suitable for portable handheld solutions, point-of-sale (POS) machines, Bluetooth speaker development, and e-cigarette battery management system prototyping requiring stable component supply and rapid time-to-test.

Supply support for EV2672A-D-00B 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 power management ICs, including DC/DC converters, battery chargers, LED drivers, and motor drivers for consumer, industrial, and automotive markets.

The MP2672A product line targets compact, high-efficiency 2-cell lithium-based charging applications where integrated switching, cell balancing, and host-controlled configurability reduce bill-of-materials and simplify firmware integration.

FAQ

What is the default operating mode of the EV2672A-D-00B?

The board ships in host-control mode by default, with JP5 connected to set BATT_REG = 8.4V. This enables full I²C configuration of charge parameters, status monitoring, and fault reporting via the MP2672A Evaluation Kit GUI software on Windows platforms.

How do I enable cell balancing on this evaluation board?

To enable cell balancing, connect JP6 (factory-connected), wire PMID to the mid-point of the 2-cell battery pack (or simulator), and ensure R16 = 100Ω while R12 and R14 are 0Ω. Balancing activates when cell voltage imbalance exceeds threshold, dissipating excess energy through external resistors.

Which USB-to-I²C adapter is required to communicate with the board?

The EVKT-USBI2C-02 USB-to-I²C communication kit is required and explicitly referenced in the quick-start guide. It connects to the board's SCL/SDA/GND test points and interfaces with the MP2672A Evaluation Kit .exe software for register-level control and telemetry.

Can the board operate without a PC or I²C interface?

Yes - in standalone mode, configure JP1–JP4 to select BATT_REG (8.4–8.8V), set RISET = 6.04kΩ for 2A charge current, and tie CV to AGND. No host controller or PC is needed; charging proceeds autonomously with LED status indication.

What safety protections are implemented and how are they verified?

The board demonstrates MP2672A's built-in protections: input OVP (via VLIM), battery OVP (8.4V default), thermal shutdown (~120°C), NTC-based JEITA temperature profiling, and configurable safety timer. These are validated in test reports showing fault flag assertion, automatic shutdown, and auto-recharge behavior under fault conditions.

Is the MP2672A IC itself available for purchase separately?

Yes - the underlying IC is the MP2672AGD, offered in QFN-18 (2mm × 3mm) packaging. Aetrix Electronics stocks both the EV2672A-D-00B evaluation board and the MP2672AGD bare die for production design-in and volume deployment.