Texas Instruments SN6501 | Demoboard TIDA-010030

Description

This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over temperature and over current situations. The SOC gauging, based on bq34z100-g1, takes advantage of an impedance tracking algorithm and achieves as high as 2% accuracy at room temperature. Through a well-designed auxiliary power supply strategy and high efficiency, low quiescent current DC-DC converter LM5164, this design achieves 50-μA stand-by and 5-μA ship mode consumption, saving more energy and allowing longer shipping time and idle time. Also, this design supports a well running firmware, which helps to decrease product research time.

Features

• 2% battery pack SOC accuracy at room temperature
• 50-μA current consumption when in standby mode
• 15-μA current consumption when in shipping mode
• Robust and programmable protection, including: cell over voltage, cell under voltage, overcurrent discharge, short circuit, overtemperature and undertemperature
• Support 100-mA cell balancing
• High-side charging and discharging MOSFETs and support pre-discharge function

Typical applications

• Mowing robot battery pack, UPS Li-Ion battery pack and other over 10S battery pack applications
• E-bike battery pack and e-scooter battery pack

More information

• Datasheet
• IC product information