Monolithic Power Systems Inc. EV2797-0000-FP-00B

Overview

EV2797-0000-FP-00B from Monolithic Power Systems is a 16-cell I²C-compatible evaluation board for the MP2797 analog front-end IC, designed to validate high-accuracy battery monitoring and protection in 7–16S Li-ion/Li-polymer packs. It integrates power MOSFETs, a 5mΩ current-sense resistor, four NTC inputs, and internal balancing circuitry - supporting up to 70A continuous charge/discharge and 58mA internal cell balancing.

For engineers reviewing the EV2797-0000-FP-00B datasheet, EV2797-0000-FP-00B pinout, EV2797-0000-FP-00B application, or EV2797-0000-FP-00B equivalent, this board enables rapid validation of configurable over-voltage, under-voltage, short-circuit, temperature, and open-wire protections - with GUI-driven register configuration, Coulomb counting, and soft-start discharge control for industrial and e-mobility battery management systems.

Technical Context

The EV2797-0000-FP-00B implements the MP2797 AFE IC in a fixed I²C interface configuration (register option "-0000"), supporting 7–16 series cells with 18V–75.2V pack voltage range and ±1.5mV cell voltage measurement accuracy. It features synchronous current sensing via an external shunt, four independent NTC thermistor inputs, and integrated high-side CHG/DSG MOSFET drivers with programmable soft-start and over-current protection.

This board includes hardware-level safety features: configurable thresholds for cell OV/UVP (0–4980mV), die/NTC temperature protection (−40°C to +85°C), mismatch detection (0–1211mV), and automatic or GPIO-triggered passive balancing - with provision for external balancing transistors to extend current beyond 58mA.

Key Specifications

Availability

EV2797-0000-FP-00B is available at Aetrix Electronics and suitable for battery management system development, BMS validation labs, and e-bike/e-scooter OEM design requiring stable component supply, repeatable test platform access, and production-ready firmware integration support.

Supply support for EV2797-0000-FP-00B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with core expertise in battery management, DC/DC conversion, and motor control solutions for industrial, automotive, and consumer applications.

The MP2797 product line delivers highly integrated, high-accuracy analog front-ends for multi-cell battery packs - engineered specifically for demanding BMS applications requiring precision voltage/current measurement, robust fault protection, and flexible communication interfaces.

FAQ

What communication interface does the EV2797-0000-FP-00B support?

This board uses the I²C interface exclusively, matching the MP2797DFP-0000 IC variant. It requires the EVKT-USBI2C-02 USB-to-I²C communication kit and the official MP2797 GUI software for configuration and real-time monitoring. SPI functionality is only available on the EV2797-0002-FP-00B variant.

Can the board evaluate fewer than 16 cells?

Yes - the board supports 7–16 series cells via jumper configuration. To test with fewer cells, short unused cell-sensing channels (e.g., C10–C16 for a 10S setup) using 0Ω resistors at designated pads (R54–R59), and reduce input voltage proportionally (e.g., ~37V for 10S). The GUI allows dynamic cell count selection from 7 to 16.

How is cell balancing implemented on this board?

The board uses the MP2797's internal 58mA balancing MOSFETs per cell, with provision for external balancing transistors via dedicated footprints. Balancing mode (manual/auto), thresholds, and stop logic are fully configurable via GUI registers. Auto-balancing activates only when cell voltage exceeds 2.5V and inter-cell delta exceeds 19.5–87.85mV.

Does the board include protection for short-circuit and over-current events?

Yes - it provides dual-level discharge over-current (OC1/OC2) and short-circuit (SC) detection with independently configurable thresholds (2.5–240mV), deglitch timing (0.1ms–2520ms), and soft-start–enabled recovery. The DSG FET driver incorporates hardware-level SC removal detection with pull-up current and retry delay settings.

What is required to run the evaluation software?

A Windows PC (XP or later), USB port, EVKT-USBI2C-02 kit, and the MP2797 GUI software (downloadable from mps.com). The software reads real-time cell voltages, temperatures, current, SOC, and fault status; writes protection thresholds; configures FET control modes; and logs data during active monitoring sessions.

Is open-wire detection supported, and how is it configured?

Yes - open-wire detection is implemented via programmable pull-up/pull-down sequences on each cell channel. Threshold (39–625mV), timer (1–16ms per phase), and power-on execution are configurable in the GUI. Detection requires physical cell connections - it cannot be validated using the on-board cell simulator shunt (CN7).