2-cell 2A Boost Charger with NVDC Power Path and Integrated Cell Balancing

The MP2672A is a highly integrated, flexible switch-mode battery charger IC for Lithium-ion batteries with two cells in series. This makes it applicable for a wide range of portable applications.

When an input power supply is present, the MP2672A operates in boost mode to charge the battery with two cells in series. When charging is enabled, the MP2672A automatically detects the battery voltage and charges the battery in three phases: pre-charge, constant current charge, and constant voltage charge. Other features include charge termination and auto-recharge.

The device also has a narrow voltage DC (NVDC) power structure. With a deeply discharged battery, the MP2672A regulates the system output to a minimum voltage level. This powers the system instantly while simultaneously charging the battery via the battery FET.

The MP2672A provides a cell balance function. It can monitor the voltage across each cell, then equalize the cell’s voltages if the difference between the two cells exceeds the mismatch threshold.

The device has two configuration modes: standalone mode and host-control mode. In standalone mode, the charging parameters can be configured by hardware pins. In host-control mode, the charging parameters can be configured by the I²C registers.

Diverse and robust protections include a thermal regulation loop to decrease the charge current in case the junction temperature exceeds the thermal loop threshold and battery temperature protection that is compliant with JEITA standards. Other safety features include input over-voltage protection (OVP), battery OVP, thermal shutdown, battery temperature monitoring, a watchdog timer, and a configurable backup timer to prevent prolonged charging of a dead battery.

The MP2672A is available in a QFN-18 (2mmx3mm) package.

Advantages Include: 

The MP2672A is highly customizable. Users can configure the MP2672A via the downloadable I2C GUI.

This I2C GUI allows you to program the MP2672A. By using this I2C GUI, you can set the output voltage, PG delay enables, output current limit, and more. Please reference the user guides for installation and programming instructions.

System Requirements:

Windows 7 or later

.Net Framework 4 or later

Communication Interface Device USB to I²C/PMBus, included with product evaluation kit or can be purchased separately. 

The EVKT-USBI2C-02 is included with product evaluation kits, or it can be purchased separately. EVKT-USBI2C-02 provides the communication interface for USB to I2C or USB to PMBus. It is designed to work with MPS I2C and PMBus products, and Virtual Bench Pro, and I2C GUI tools. USB driver will install automatically or download directly.

The EVKT-USBI2C-02 kit includes:

• 1 USB to I2C communication device interface
• 1 USB cable
• 1 10-pin ribbon cable
• 1 3-pin ribbon cable
• Datasheet and driver files

$25.00 + tax

2-cell boost charger EV board with 2a Charge Current and NVDC (For NVDC Power Path Applications)

The EV2672 Evaluation Board is designed to demonstrate the capabilities of MPS’ MP2672.

The MP2672 is a high-integrated, flexible switch-mode battery charging management device for 2-cell series Li-ion and Li-Polymer battery pack used in a wide range of portable applications.

When 5V adapter orUSBinput is present, the MP2672 charges 2-cell battery in step-up mode, when 5V input is absent, 2-cell battery discharges and the battery supplies system.

For the charging function in each application, the MP2672 automatically detects the battery voltage and charges the battery in the three phases: pre current, constant current and constant voltage. Other features include charge termination and auto-recharge.

To guaranteed safe operation, the MP2672 limits the die temperature to a preset value 120ºC. Other safety features include input over-voltage protection, battery over-voltage protection, thermal shutdown, battery temperature monitoring, and a programmable timer to prevent prolonged charging of a dead battery.

$50.00 + tax