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High-Accuracy Battery Monitor and Protector with Coulomb Counting

A Robust Battery Management Device

The MP2797 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).

Two Separate Analog-To-Digital Converters

The MP2797 integrates two separate analog-to-digital converters (ADCs). The first ADC measures each channel’s differential cell voltages (up to 16 channels), die temperature, and 4-channel temperature via an external NTC thermistor. The second ADC measures the charge/discharge current via an external current-sense resistor.

To dampen voltage peaks, a so-called RC snubber shunt can be used to dissipate the excess energy to the outside.

The SMT-V is capable of absorbing a pulse energy of 2.5J with a pulse duration of 0.1s at a contact point temperature of 120°C and a number of 50 pulses over a lifetime with a corresponding gap time. This corresponds to a power loss per pulse of 25W. Figure 1 shows an illustration of a snubber posture. The SMT-V has an ohmic resistance of 17.5mOhm and size 2512. Samples can be ordered now.

Your Contact Person

For further information please contact Thomas Berner.

Thomas Berner is product marketing manager.
Thomas Berner Product Marketing Manager +49 89 1301438-15 E-MAIL