The bq78PL114 is a battery management controller designed by TI for managing 12 series cells. It has PowerPump™ cell balancing technology and SmartSafety features.
The bq78PL114 PowerLAN™ Master Gateway controller provides complete battery system control, communications, and safety for 3‑to‑12 series Li‑ion cells. It includes PowerPump™ cell‑balancing technology, an 18‑bit integrating delta‑sigma coulomb counter, and up to six external temperature sensors for precise monitoring and compensation.
The datasheet details the device’s pinout, terminal functions, absolute maximum ratings, electrical and safety characteristics, SMBus/SPI interfaces, and mechanical dimensions. It also lists ordering options and regulatory notices.
| Maximum cell voltage per cell | -0.5 to 5.0 V |
|---|---|
| Operating temperature range (ambient) | -40 to 85 °C |
| Coulomb counter resolution | 18‑bit |
| Number of independent ADCs | One per cell |
| Supported external temperature sensors | Up to six |
It is designed for managing up to 12 series cell battery systems.
The device can monitor temperature with up to six external sensors.
It supports SMBus or SPI interfaces and can include SHA‑1 authentication for Smart Battery System 1.1 compliance.
The voltage measurement resolution is less than 1 mV.