The MPF42790 from Monolithic Power Systems is a drop-in solution to provide comprehensive status information on lithium-ion battery strings up to 16 series cells. The MPF42790 estimates the internal state of charge (SOC) and state of health (SOH) for each cell, as well as the full pack. The MPF42790 also determines remaining runtime, charge time, and instantaneous available power. On-board memory enables the lifetime logging of key parameters.
The MPF42790 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 MPF42790 can achieve SOC accuracy within 3%. The MPF42790 can also be paired with other analog front-end (AFE) or battery stack monitors. The 400 kHz I2C interface provides standard, robust communication. The 5-level LED drivers provide a simple, cost-effective charge level indicator for the device.
The MPF42790 is available in a TQFN-32 (4 mm x 4 mm) package.
Key features of MPF42790
±3% 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’ SOH to Track Degradation
- Provides Lifetime Logging
- Supports 5-Level LED SOC Indicator with Push-Button Trigger
- 2.5 V Minimum Supply Voltage
- Low Current Consumption: 6 μA in Disabled Mode and 135 μA (Average) in Operating Mode during Rest
- Supports Up to 400 kHz I2C with CRC for Robust Communication
- Available in a Compact TQFN-32 (4 mm x 4 mm) Package
- Available in Turn-Key MPS BMS Module:
MBM1xS-P50 and MBM1xS-P100
Click here to learn more about MPF42790
