The MPQ2793 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 16-cell series battery packs, with an absolute voltage exceeding 80V on particular pins.
The MPQ2793 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltage (up to 16 channels), die temperature, and 4-channel temperatures via external NTC thermistors. The second ADC measures the current via an external current-sense (CS) 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 MPQ2793 can achieve state-of-charge (SOC) error to within 2%.
The MPQ2793 includes high-side MOSFET (HS-FET) drivers for independent charge and discharge control. The discharge (DSG) MOSFET driver includes configurable soft start (SS) to provide controlled turn-on, eliminating the need for an external pre-charge circuit. The DSG MOSFET driver incorporates protections including discharging over-current (DOC), short-circuit (SC), battery under-voltage (UV), over-temperature (OT), and under-temperature (UT). The charge (CHG) MOSFET driver incorporates protections such as charging over-current (COC), short-circuit, battery over-voltage (OV), UT, and OT. 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 MPQ2793 is available in a TQFP-48 (7mmx7mm) package, and is available in AEC-Q100 Grade 1.
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