PST PB7130

PB7130 is a multi-cell lithium battery management IC supporting 5–13 series cell applications. It performs battery pack measurement (cell voltage, current, pack temperature), protection (charge/discharge MOS control), and balancing functions. Single-cell voltage measurement range is 0–5V, compatible with most lithium battery chemistries.

The built-in VADC module provides voltage, temperature, and fast current measurement. The built-in CADC module handles current acquisition for high-accuracy coulomb-counting SOC metering. Multiple current, voltage, temperature, and charge/discharge protection functions are provided, along with 4 charge/discharge MOS control pins.

Supports internal high-current balancing with up to 100mA per channel, simultaneous multi-cell balancing, and multiple intelligent balancing modes.

Supports MCU direct-connect daisy-chain communication, up to 32 devices in a chain, with high-voltage capacitors for AFE cascading.

An internal automatic scheduling system handles timed measurement and real-time protection, reporting to the MCU via interrupt pin to significantly reduce system resource usage and power consumption. Multiple low-power sleep modes are available. In standby state, overcurrent and short-circuit protection remain active, with automatic detection of current flow and charger insertion to resume normal operation. In deep sleep mode, ultra-low power system state retention is achieved.

• Operating voltage range: 12 - 81V
• Operating temperature range: -40°C ~ +125°C
• Shutdown mode current consumption: 2μA
• Deep sleep mode current consumption: 5μA (data retention)
• Active mode current consumption: 50 - 150μA
• Supports 5 - 13 series cells, 8 auxiliary analog inputs for NTC or external voltage measurement
• High-accuracy voltage and fast current measurement: 16-bit VADC - +/-2mV @ 25°C, Vcell = 3.6V - +/-5mV @ -20~85°C - +/-10mV @ -40~125°C
• 16-bit current integration CADC - 125mS/250mS coulometer current measurement - +/-8uV @ 25°C
• Comprehensive balancing features - Internal balancing current up to 100mA - Automatic balancing strategy based on cell voltage differential
• Independent DSG, CHG, PCHG, PDSG gate drive
• Automatic protection recovery
• Automatic pre-charge and pre-discharge
• Charger detection and load detection
• AFE standalone protection mode support
• Low-power protection in idle state
• Low-current wake-up and charger insertion wake-up
• SPI communication up to 2MHz, dedicated interrupt pin
• Daisy-chain cascade with scheduled automatic data measurement
• System protection - Cell overvoltage protection and latch, undervoltage protection - Charge high/low temperature protection - Discharge high/low temperature protection - MOSFET overtemperature protection - Charge overcurrent protection - Discharge overcurrent level-1/2/3 protection and latch - Discharge short-circuit protection and latch - Watchdog protection ~ System fault detection - Cell secondary high/low voltage protection - Sense wire open-circuit detection - MOSFET fault detection - Battery pack voltage imbalance detection

• E-bikes
• Electric motorcycles
• Power tools
• Communications
• Home and solar/wind energy storage 5~13-cell series lithium battery BMS systems