PAC22140 Smart Battery Monitoring System

The PAC22140 BMS), (Smart Battery Monitoring System) monitors 10 – 20-series Li-ion, Li-polymer, and LiFePO4 battery packs. PAC22140 communicates using UART/SPI or I²C/SMBus interfaces.

PAC22140 integrates a FLASH-programmable MCU, Power Management, Current/Voltage/Temperature Sense and drive circuits for charge/discharge FETs and protection fuses. It can communicate using UART/SPI or I2C/SMBus serial interfaces.

PAC22140 integrates a programmable-gain differential amplifier and 16-bit Sigma-Delta ADC for current sense as well as a 16-bit Sigma-Delta ADC for cell balancing voltage sense and a 10-bit SAR ADC for additional voltage and temperature sense usage.

Key Features:

Fully Programmable 50Mhz Arm Cortex M0 with 32kB Flash
10s-20s Cell Monitoring & Balancing
19V-145V Input Buck DC/DC
High Voltage Charge Pump for gate drive
5V/225mA Regulator
CHG/DSG FET Driver
20s Cell Balancing FETs (50mA)
16-bit SD ADC for Current Sense with Differential PGA
16-bit SD ADC for voltage sense, cell balance
10-bit SAR ADC for voltage/temp sense
Programmable 2-Level OCP
Ta = -40 C to 105 C
9 x 9 mm, 60 pin QFN with power pad

Parameters:

Battery Cell Count: 10 to 20
Battery Cell Balancing: Integrated Cell Balancing FETs (50mA)
Stackable: Application Specific
Input Voltage(V): 145
Power Management: 145V DC/DC Buck Controller
Voltage Regulator(V/mA): 5 V / 225 mA, 3.3 V / 90 mA
Gate Drivers: CHG/DSG Drivers
eFuse FET Driver: Yes
Microcontroller: 50MHz ARM Cortex M0 with 10bit SAR ADC
MCU Flash(KB): 32kB – Flash , 8kB – SRAM
Isense ADC: 6-bit SD ADC with Differential PGA
Vsense ADC: 16-bit SD ADC
Interface: UART/SPI, I2C/SMBus
Package Type: QFN, 60-pin
Package(mm): 9 x 9

Typical Applications:

Garden Tools
Power Tools
E-Transportation
Broad Industrial Battery Management