MP2790DFP

The MP2790 is a robust battery management device, providing a complete analog front-end (AFE) monitoring and protection solution. It is designed for multiple-cell series battery management systems (BMS). The device can support I2C or serial peripheral interface (SPI) communication. It supports connections for 4-cell to 10-cell series battery packs, with an absolute voltage exceeding 80V on particular pins. The MP2790 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltage (up to 10 channels), die temperature, and 4-channel temperatures via external negative temperature coefficient (NTC) thermistors. The second ADC measures the current via an external current-sense resistor. The dual ADC architecture enables synchronous voltage and current measurements for cell and pack impedance monitoring. When paired with an MPF4279x fuel gauge, the MP2790 can achieve state-of-charge (SOC) error to within 2%. The MP2790 includes high-side MOSFET (HS-FET) drivers for charge and discharge independent control. The discharge (DSG) MOSFET driver includes a configurable soft start (SS) that provides a controlled turn-on, eliminating the need for an external pre-charge circuit. The DSG MOSFET driver incorporates protections such as discharging over-current (DOC), short-circuit (SC), battery under-voltage (UV), over-temperature (OT), and under-temperature (UT) protection. The CHG MOSFET driver incorporates protections such as charging over-current (COC), SC, and battery over-voltage (OV), UT, and OT protection. All of these protections have configurable thresholds. Internal passive balancing MOSFETs can be used to equalize mismatched cells, supporting up to 58mA. There is also the option to drive external balancing transistors (MOSFET or BJT). The MP2790 is available in a TQFP-48 (7mmx7mm) package.