2-Cell boost charger with 2a Charge Current Evaluation Board (For non-Power Path Applications)
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The EV2672A-D-00B evaluation board is designed to demonstrate the capabilities of the MP2672A. The MP2672A is a highly integrated, flexible, switch-mode battery charging management device for 2-cell series Li-ion and Li-polymer battery packs. The MP2672A can be used in a wide range of portable applications.
When a 5V adapter orUSBinput is present, the MP2672A charges the 2-cell battery in step-up mode.
To effectively charge each application, the MP2672A automatically detects the battery voltage, and charges the battery in three phases: pre-charge, constant current (CC) charge, and constant voltage (CV) charge. Other charging features include charge termination and auto-recharge.
To guarantee safe operation, the MP2672A limits the die temperature to a preset value (about 120°C). Other safety features include input over-voltage protection (OVP), battery OVP, thermal shutdown, battery temperature monitoring, and a configurable timer to prevent prolonged charging of a dead battery.
The MP2672A is available in a QFN-18 (2mmx3mm) package.
- 4.0V to 5.75V Input Voltage Range
- Compatible with Host-Control and Standalone Mode
- Configurable Input Voltage Limit
- Up to 2A Configurable Charge Current for 2-Cell Battery
- Configurable Charge Voltage with 0.5% Accuracy
- No External Sense Resistor Required
- Integrated Cell-Balancing Circuit and Preconditioning for Fully Depleted Battery
- Flexible New Charging Cycle Initiation
- Charging Operation Indicator
- I2C Port for Flexible System Parameter Setting and Status Reporting
- Negative Temperature Coefficient (NTC) Pin for Temperature Monitoring
- Built-In Charging Protection and Configurable Safety Timer
- Thermal Regulation and Thermal Shutdown
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.
- Highly Integrated without Sense Resistor, Cost-Effective Solution
- One-Time Programmable (OTP) Memory, I2C Programmable Charging Parameters
- Compatible with Host-Control and Standalone Operation
- NVDC Power Path Management
- Integrated Cell-Balancing Circuit for Cell Mismatch
- Ultra-Small QFN-18 (2mmx3mm) Package
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.
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
The EVKT-MP2672A is an evaluation kit for the MP2672A, which can be controlled by the GUI to charge and discharge 2-cell batteries.
The EVKT-MP2672A is an evaluation kit for the MP2672A, which can be controlled by the GUI to charge and discharge 2-cell batteries. Its layout accommodates most commonly used components. The default function of this board is preset for host-control mode, and the battery regulation voltage is preset to 8.4V for 2-cell Li-ion batteries.
$75.00 + tax