DESCRIPTION

The MPF42791 is a drop-in solution to provide

comprehensive status information on lithium-ion

battery strings up to 16 series cells. The

MPF42791 estimates the internal state-ofcharge

(SOC) and state-of-health (SOH) for

each cell, as well as the full pack. The

MPF42791 also determines impedance,

remaining runtime, charge time, and

instantaneous available power. On-board

memory enables the lifetime logging of key

parameters.

The MPF42791 is simple to use and supports a

variety of lithium cell chemistries and cell sizes.

A few basic configurations allow for quick set-up,

and advanced configuration capabilities can

fine-tune the device for specific applications.

When paired with an MP279x battery monitor,

the MPF42791 can achieve SOC accuracy

within 2.5% across the temperature range. The

MPF42791 can also be paired with other analog

front-end (AFE) or battery stack monitors. The

400kHz I2C interface provides standard, robust

communication. The 5-level LED drivers provide

a simple, cost-effective charge level indicator for

the device.

The MPF42791 is available in a TQFN-32

(4mmx4mm) package.

FEATURES

• Compatible with Commonly Used Battery

Monitors for Up to 16 Series Cells

o ±2.5% State-of-Charge (SOC) Accuracy

when Paired with MP279x Battery

Monitors

• Provides Critical Battery Information:

o Pack and Cell SOC

o Pack and Cell State-of-Health (SOH)

o Remaining Runtime and Charge Time

o Instantaneous Available Power

• Supports a Wide Variety of Lithium Cells

• Adaptive Learning Can Be Enabled to:

o Refine Initial Charge Settings

o Refine Initial Discharge Settings

o Update Individual Cells’ State-of-Health

(SOH) to Track Degradation

o Update Equivalent Series Resistance

(ESR) to Track Degradation

• Provides Lifetime Logging

• Supports 5-Level LED SOC Indicator with

Push-Button Trigger

• 2.5V Minimum Supply Voltage

• Low Current Consumption: 6μA in Disabled

Mode and 135μA (Average) in Operating

Mode during Rest

• Supports Up to 400kHz I2C with CRC for

Robust Communication

• Available in a Compact TQFN-32

(4mmx4mm) Package

• Available in Turn-Key MPS BMS Module:

o MBM1xS-P50-B and MBM1xS-P100-B

APPLICATIONS

• Light EVs: Scooters, Bikes, and Golf Carts

• Energy Storage: Uninterruptable Power

Supplies (UPS) and Renewable Energy

• Industrial Robots, Floor Cleaners, and

Forklifts

• Cordless Tools and Gardening Equipment