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