MP2790

4-Cell to 10-Cell, High-Accuracy Battery Monitor and Protector with Coulomb Counting

Datasheet

Description

The MP2790 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 10-cell series battery packs, with an absolute voltage exceeding 80V on particular pins.

The MP2790 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltage (up to 10 channels), die temperature, and 4-channel temperatures via external negative temperature coefficient (NTC) thermistors. The second ADC measures the current via an external current-sense 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 MP2790 can achieve state-of-charge (SOC) error to within 2%.

The MP2790 includes high-side MOSFET (HS-FET) drivers for charge and discharge independent control. 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 DSG MOSFET driver incorporates protections such as discharging over-current (DOC), short-circuit (SC), battery under-voltage (UV), over-temperature (OT), and under-temperature (UT) protection. The CHG MOSFET driver incorporates protections such as charging over-current (COC), SC, and battery over-voltage (OV), UT, and OT protection. 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 MP2790 is available in a TQFP-48 (7mmx7mm) package.

Features & Benefits

Incorporates Dual ADC Architecture:
- <±2% State-of-Charge (SOC) Error with MPF4279x Fuel Gauge
- Cell Voltage Measurement Error <5mV
- Current/Coulomb Counter Error <±0.5%
- Strictly Synchronized Current/Voltage Measurement for Impedance Sensing
Includes High-Side N-Channel MOSFET Drivers for Charge and Discharge Control:
- Supports FET Soft-Start Discharge Control to Eliminate Pre-Charge Circuit
- Drives Up to 100A DC with Parallel N-Channel MOSFETs
Hardware Configurable Protections with Recovery Option:
- Charge/Discharge Over-Current (OC) and Short-Circuit
- Cell Under-Voltage (UV) and Over-Voltage (OV)
- Pack UV and OV
- Cell Under-Temperature (UT) and Over-Temperature (OT)
- Die High-Temperature Protection
Passive Cell Balancing Up to 58mA per Cell:
- Can Drive External Balancing Transistors
- Automatic or Manual Control
Additional Features:
- Integrated 3.3V and 5V Low-Dropout (LDO) Regulators
- Load and Charger Plug-In Detection
- High-Voltage and Low-Voltage GPIOs
- Dedicated Thermistor Inputs
- Open-Wire Detection
- Persistent Dead Battery Flag
- Lockable Multiple-Time Programmable (MTP) Memory for Key Thresholds
I²C or Serial Peripheral Interface (SPI) with 8-Bit Cyclic Redundancy Check (CRC)
Random Cell Connection Tolerant
Available in a TQFP-48 (7mmx7mm) Package

Active Part Numbers:

MP2790DFP-xxxx-T MP2790DFP-0000-T MP2790DFP-0002-T

Meaning of P & Z

Related Products

EVKT-MP2790 MP2790 Evaluation Kit

The EVKT-MP2790-0000 is an evaluation kit for the MP2790. The EVKT-MP2790-0000 is designed for I²C communication.

This board is designed to demonstrate the capabilities of the MP2790, which is used as a robust battery management device. The MP2790 provides a complete analog front-end (AFE) monitoring and protection solution that is designed for 7-cell to 10-cell series battery systems.

$190.00
+ tax

EV2790-000x-FP-00A

7-Cell to 10-Cell, High-Accuracy I²C/SPI Monitoring and Protection IC with Coulomb Counting Evaluation Board

MP2790 GUI

The MP2790 is highly customizable. Users can configure the MP2790 via the downloadable GUI.