Monolithic Power Systems Inc. EV2672A-D-00A

Overview

EV2672A-D-00A from Monolithic Power Systems is an evaluation board for the MP2672A 2-cell series Li-ion/Li-polymer switch-mode boost charger IC, supporting NVDC power path management, up to 2A configurable charge current, I²C-controlled battery regulation voltage (8.4V default), and integrated cell balancing - demonstrated in portable handheld, PoS, and Bluetooth speaker applications.

For engineers reviewing the EV2672A-D-00A datasheet, EV2672A-D-00A pinout, EV2672A-D-00A application, or EV2672A-D-00A equivalent, this board enables rapid validation of host-controlled charging, thermal regulation behavior, cell-balancing activation, and efficiency performance across 6.4–8.4V battery voltage range under 5V input conditions.

Technical Context

The EV2672A-D-00A implements a complete reference design for the MP2672A IC, which operates in boost mode when 4.5–6.0V input is present and transitions to system power supply mode when input is removed. It supports dual control modes: standalone (via resistor programming) and host-control (via I²C interface with register-accessible parameters).

Board-level features include jumper-configurable battery regulation voltage (8.4V/8.6V/8.7V/8.8V), JP6-enabled cell balancing via PMID connection, NTC-based temperature monitoring, and preconfigured 6.04kΩ RISET resistor setting 2A fast charge current. Efficiency testing shows ≥92% CC-mode and ≥90% CV-mode conversion at VBATT = 7.4V and VIN = 5V.

Key Specifications

Availability

EV2672A-D-00A is available at Aetrix Electronics and suitable for portable handheld solutions, point-of-sale terminals, and Bluetooth speaker development requiring stable component supply, quick-turn evaluation, and production-ready reference design validation.

Supply support for EV2672A-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 power management ICs, with over two decades of expertise in DC-DC conversion, battery management, and motor drivers.

The MP2672A product line targets portable 2-cell battery systems requiring high-efficiency boost charging, seamless NVDC power path operation, and flexible host-controlled configuration - designed specifically for space-constrained, thermally sensitive applications.

FAQ

What is the default operating mode of the EV2672A-D-00A evaluation board?

The board defaults to host-control mode with JP5 connected, enabling I²C-based configuration of charge voltage, current, timers, and status reporting. Standalone mode requires floating JP5 and configuring jumpers JP1–JP4 for fixed battery regulation voltages.

How do I enable cell balancing on the EV2672A-D-00A?

Enable cell balancing by connecting JP6 (factory-connected), then wiring PMID to the midpoint between the two series-connected battery cells. External balancing resistors R12/R14 must be 0Ω and R16 set to 100Ω per schematic Note 1a.

Which software and hardware are required to communicate with the MP2672A via I²C?

The MP2672A Evaluation Kit GUI software (Windows XP/7+) and EVKT-USBI2C-02 USB-to-I²C communication kit are required. The board's 6-pin 2.54mm header (PMID, VLIM, AGND, ISET, NTC, VCC) connects to the kit for register read/write and real-time fault monitoring.

What is the purpose of the RISET resistor on the EV2672A-D-00A board?

The 6.04kΩ RISET resistor (R_ISET) sets the fast charge current to 2A in standalone mode using Equation (1): I_CC = 12(kΩ)/R_ISET(kΩ). In host-control mode, I²C registers override this value, making RISET a backup configuration element.

Does the EV2672A-D-00A support thermal regulation during charging?

Yes - the MP2672A IC integrates thermal regulation that dynamically reduces charge current above ~120°C die temperature. The board layout includes thermal vias under U1's exposed pad and uses 2oz copper layers to sustain continuous 2A operation at ambient ≤40°C.

Can the EV2672A-D-00A evaluate both constant-current and constant-voltage charge phases?

Yes - the board demonstrates full three-phase charging (pre-charge, CC, CV) with real-time waveform capture capability. Test results on pages 11–14 show VBATT ramp from 6.4V to 8.4V in CC mode and IBATT tapering to <100mA in CV mode at fixed 8.4V regulation.