Monolithic Power Systems Inc. EV2790-0000-FP-00B

Overview

EV2790-0000-FP-00B from Monolithic Power Systems is an I²C-enabled evaluation board for the MP2790 high-accuracy battery monitor and protector IC. It supports 4- to 10-cell series Li-ion/Li-polymer battery packs (up to 47V), integrates dual synchronous ADCs for cell voltage and current sensing, features configurable CHG/DSG MOSFET drivers with soft-start, and enables Coulomb counting, open-wire detection, and passive/active cell balancing - used in EV traction battery validation, energy storage system prototyping, and portable power tool BMS development.

For engineers reviewing the EV2790-0000-FP-0000-FP-00B datasheet, EV2790-0000-FP-00B pinout, EV2790-0000-FP-00B application, or EV2790-0000-FP-00B equivalent, this board provides full GUI-driven configuration of protection thresholds (OV/UV/OC/SC/OT/UT), real-time ADC scanning, NTC thermistor monitoring (4 channels), and hardware-level fault response timing - critical for functional safety validation and ISO 26262-compliant BMS design.

Technical Context

The EV2790-0000-FP-00B implements the MP2790DFP-0000 IC in TQFP-48 packaging, supporting 10-channel differential cell voltage measurement (0–5V per cell), ±70A continuous charge/discharge current sensing via external shunt, and dual independent ADCs enabling synchronized V/I sampling for impedance analysis. It includes dedicated high-side gate drivers for CHG and DSG N-MOSFETs with programmable turn-on slope (0.1–1.6 V/ms) and short-circuit deglitching (0.1–25.5 ms).

Hardware protections are fully configurable via I²C: discharge over-current (DOC) thresholds from 2.5–240 mV, charge over-current (COC) from 1.6–153.6 mV, cell OV/UV with 0–292.5 mV hysteresis, and die temperature monitoring with 0.474°C resolution. The board supports pre-charge/pre-discharge control via GPIO1/GPIO2 and accommodates external balancing BJTs for >58 mA balancing current.

Key Specifications

Availability

EV2790-0000-FP-00B is available at Aetrix Electronics and suitable for battery management system validation, embedded BMS firmware development, and ISO 26262 functional safety testing requiring stable component supply, traceable revision control (Rev. 1.0), and guaranteed long-term availability for production ramp-up.

Supply support for EV2790-0000-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 expertise in battery management, DC/DC conversion, and motor control solutions for automotive, industrial, and consumer markets.

The MP2790 product line delivers integrated analog front-end battery monitors with dual-ADC architecture, hardware-based protection, and Coulomb counting - designed specifically for high-reliability, multi-cell Li-ion systems where precision, safety, and configurability are non-negotiable.

FAQ

What software is required to operate the EV2790-0000-FP-00B?

The MP2790 Graphical User Interface (GUI) v1.1 is mandatory and must be installed on Windows XP or later. It provides full register-level access to configure protection thresholds, ADC scan sequences, MOSFET control modes, Coulomb counting parameters, and NTC thermistor settings. No third-party drivers or SDKs are needed - communication occurs exclusively via the EVKT-USBI2C-02 USB-to-I²C adapter.

Can the EV2790-0000-FP-00B evaluate open-wire detection and cell balancing?

Open-wire detection and active cell balancing require connection to a real battery pack - these functions cannot be validated using the cell simulator shunt (CN7). For open-wire testing, all 10 cell sense lines (CELLS1) must be connected to actual cell terminals; for balancing, external BJTs must be soldered and configured in the GUI to enable >58 mA balancing current beyond internal MOSFET capability.

Does the board support pre-charge and pre-discharge functionality?

Yes - GPIO1 controls a P-channel MOSFET for pre-charge, and GPIO2 controls another for pre-discharge. These are enabled by default in safe mode and can be disabled by setting GPIO1/GPIO2 outputs low. Pre-discharge is recommended when DSG soft-start fails, and resistor values for current limiting must be selected based on maximum pre-charge/pre-discharge current per Figure 46 in the reference design.

How is the number of series cells configured on the board?

Cell count is set both physically and in software: physically via jumper shorts (e.g., shorting BATT6–BATT10 for 4S) and digitally via the "Number of Series Cells" field in the GUI's Cell & Communication Configuration tab. The GUI automatically adjusts ADC scan lists and protection logic - for example, excluding CELL1 when 5S is selected and disabling unused NTC channels.

What is the role of the EVKT-USBI2C-02 adapter?

The EVKT-USBI2C-02 is the only supported interface for host communication - it converts USB signals to I²C (SCL/SDA/GND) at 100 kHz or 400 kHz, with built-in level-shifting compatible with the EV2790-0000-FP-00B's 3.3 V logic. It is not interchangeable with generic USB-to-I²C dongles due to custom timing and CRC handshake requirements defined in the MP2790 protocol stack.

Is the board RoHS-compliant and qualified for automotive use?

The EV2790-0000-FP-00B itself is a development tool and carries no AEC-Q200 qualification; however, the underlying MP2790DFP-0000 IC is rated for -40°C to +85°C operation and designed to meet automotive BMS requirements. Board-level components comply with RoHS Directive 2011/65/EU, and the PCB uses halogen-free laminate per IPC-4101D/126.