MPF42791

MPF42791

2 to 16 Stacked Cells Battery Pack Fuel Gauge with Resistance Detection and Thermal Model

Description

The MPF42791 is a drop-in solution that provides comprehensive status information on lithium-ion battery strings up to 16 series cells. The MPF42791 estimates the internal state-of-charge (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 & Benefits

Compatible with Commonly Used Battery Monitors for Up to 16 Series Cells:
- ±2.5% State-of-Charge (SOC) Accuracy when Paired with MP279x Battery Monitors
Provides Critical Battery Information:
- Pack and Cell SOC
- Pack and Cell State-of-Health (SOH)
- Remaining Runtime and Charge Time
- Instantaneous Available Power
Supports a Wide Variety of Lithium Cells
Adaptive Learning Can Be Enabled to:
- Refine Initial Charge Settings
- Refine Initial Discharge Settings
- Update Individual Cells’ State-of-Health (SOH) to Track Degradation
- 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:
- MBM1xS-P50-B and MBM1xS-P100-B

Active Part Numbers:

MPF42791DRT-0B-yyyy-Z MPF42791DRT-0B-yyyy-P MPF42791DRT-0B-0000-Z MPF42791DRT-0B-0000-P

Meaning of P & Z

Evaluation Tools

MBMxxS-P100-x Evaluation Kit Complete High-Power Battery Management Solution for 7-Cell to 16-Cell Batteries with MPS’s Analog Front-End and Fuel Gauge

The MBMxxS-P100-x is a complete solution design for the BMUxxS-P100-x, a board for high-current designs with a 7-cell to 16-cell series battery management unit. This board uses the MP279x ICs, a robust family of battery management analog front-ends (AFEs) that provide a complete AFE monitoring and protection solution. The MP279x supports up to 16 cells in series, and provides two separate analog-to-digital converters (ADCs) for synchronous voltage and current measurements.

The high-side MOSFET (HS-FET) driver and robust hardware (HW) protection functions come with configurable thresholds. Protections include over-current protection (OCP), short-circuit protection (SCP), battery and cell over-voltage protection (OVP), battery and cell under-voltage protection (UVP), over-temperature protection (OTP), and under-temperature protection (UTP). The MP279x also integrates internal balancing FETs to equalize mismatched cells, while offering the option to control external FETs for a higher balancing current.

The board also features the MPF4279x, a standalone battery fuel gauge IC that performs state-of-charge (SoC), time-to-full, time-to-empty, and unavailable energy estimation using a custom battery model obtained through exhaustive characterization and voltage, current, and temperature readings. This solution is fast, simple, and easy to configure through the graphic user interface (GUI).

The board offers a high-power solution with up to 100A of constant current and up to 150A of peak current. Each board offers a different combination of the MP279x and MPF4279x.

$840.00
+ tax