The EV3714-0000/0002-FP-00A evaluation boards are designed to demonstrate the capabilities of the MP3714, a complete analog front-end (AFE) monitoring and protection IC. The MP3714 supports 3-cell to 16-cell series battery packs with outstanding voltage and current measurement accuracy, as well as a complete set of protection features.

The MP3714 measures each cell’s voltage and synchronously measures the charge/discharge current and Coulomb counting via an external current-sense resistor. The MP3714 includes high-side MOSFET (HS-FET) drivers for charge and discharge control. It measures the die temperature and cell temperature via 7 NTC thermistor inputs. The MP3714 contains internal passive balancing MOSFETs capable of driving up to 58mA, and is also capable of driving external balancing transistors for a higher current.

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 MOSFET drivers also incorporate over-current protection (OCP), short-circuit protection (SCP), battery undervoltage protection (UVP), battery over-voltage protection (OVP), and high/low-temperature protection. All of these protections have configurable thresholds.

This evaluation board combines the MP3714 with power MOSFETs and a current-sense resistor to support up to 70A of charge/discharge current. If needed, the board also includes placeholders to add external MOSFETs for a higher balancing current.