Monolithic Power Systems Inc. EVKT-MP2791-0000

Overview

EVKT-MP2791-0000 from Monolithic Power Systems is an evaluation kit for the MP2791 battery management AFE, designed to validate 7–14-cell Li-ion/Li-polymer pack monitoring, protection, and balancing in lab and pre-production environments. It includes the EV2791-0000-FP-00A evaluation board, EVKT-USBI2C-02 USB-to-I²C interface, cables, and GUI software supporting real-time register configuration, impedance sensing, and fault logging.

For engineers reviewing the EVKT-MP2791-0000 datasheet, EVKT-MP2791-0000 setup, EVKT-MP2791-0000 GUI operation, or EVKT-MP2791-0000 hardware compatibility, this kit provides full access to the MP2791's 15-bit cell voltage ADC (<5 mV error), 16-bit current measurement (<±0.5% error), configurable OCP/SCP/UVP/OVP thresholds, passive cell balancing (up to 58 mA/cell), and integrated high-side MOSFET driver control - all via Windows-based I²C communication.

Technical Context

The EVKT-MP2791-0000 implements a complete test platform for the MP2791 analog front-end IC, enabling functional validation of its dual-ADC architecture: one 15-bit ADC for synchronized cell voltage sampling across up to 14 series cells (0 V to 5 V per cell), and a separate 16-bit ADC for high-accuracy pack current and coulomb counting via SRP/SRN inputs. The kit supports both I²C and SPI host interfaces with 8-bit CRC for command integrity.

Hardware-level configuration is managed through jumpers (JP0–JP4), DIP switches (SW1/SW2), and external 0 Ω resistors to adapt cell count (7–14), while firmware-level tuning uses the MP2791 GUI to configure MTP/OTP registers for protection thresholds, thermistor NTC calibration, open-wire detection, and MOSFET soft-start discharge control - all without requiring custom firmware development.

Key Specifications

Availability

EVKT-MP2791-0000 is available at Aetrix Electronics and suitable for battery pack validation, BMS algorithm prototyping, and production line test fixture development requiring stable component supply, traceable documentation, and repeatable GUI-driven configuration workflows.

Supply support for EVKT-MP2791-0000 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 expertise in DC/DC converters, battery management, motor drivers, and LED drivers for industrial, automotive, and consumer applications.

The MP2791 product line delivers integrated analog front-ends for multi-cell battery systems, targeting applications demanding high-precision voltage/current sensing, configurable safety protections, and flexible communication for cloud-connected energy storage and portable power devices.

FAQ

What hardware components are included in the EVKT-MP2791-0000 kit?

The kit contains the EV2791-0000-FP-00A evaluation board, EVKT-USBI2C-02 USB-to-I²C interface (with USB cable and ribbon cable), and access to the MP2791 GUI software and supplemental documentation. No battery pack, charger, or load is included - users must supply these externally per their test requirements.

Can the EVKT-MP2791-0000 be used with Linux or macOS?

No - the MP2791 GUI software is Windows-only (Windows 7 or later, .NET Framework 4.0 required). MPS does not provide native Linux/macOS drivers or GUI alternatives. Communication via generic I²C adapters would require reverse-engineering register maps and CRC handling, which is unsupported.

How is cell count configured for battery packs with fewer than 14 cells?

Unused cell channels (e.g., channels 11–14 for a 10-cell pack) must be shorted to the highest active channel using 0 Ω resistors (e.g., R57–R60). JP0 must be removed, and SW1/SW2 must be set to OFF before powering on. This prevents floating inputs and ensures valid ADC reference paths.

What happens to register settings after power cycling the evaluation board?

All changes made via I²C interface are volatile and reset to defaults on power-down. Only configurations written to OTP or MTP memory persist across cycles. MTP allows up to two user-programmable configurations (in addition to factory OTP), with lock bits preventing further writes once set.

Does the kit support real-time impedance spectroscopy or AC impedance measurement?

No - the MP2791 performs strictly synchronized DC voltage/current sampling for impedance *estimation* (e.g., dV/dQ analysis), not true AC impedance spectroscopy. The kit enables collection of time-aligned cell voltage and current data for post-processing, but lacks built-in excitation signal generation or frequency-sweep capability.

Is the EVKT-USBI2C-02 interface compatible with other MPS evaluation kits?

Yes - the EVKT-USBI2C-02 is a通用 USB-to-I²C adapter used across multiple MPS digital AFE and PMIC evaluation platforms. Its firmware and pinout are standardized, allowing reuse with kits like EVKT-MP2639, EVKT-MP2762, and EVKT-MPQ4230, provided the target IC uses standard I²C timing and addressing.