10s-16s battery pack reference design with accurate cell measurement and high-side MOSFET control
Description
This reference design is a low standby and ship-mode current consumption and high cell voltage accuracy 10s–16s Lithium-ion (Li-ion): LiFePO4 battery pack design. It monitors each cell voltage: pack current: cell and MOSFET temperature with high accuracy and protects the Li-ion: LiFePO4 battery pack against cell overvoltage: cell undervoltage: overtemperature: charge and discharge over current and discharge short-circuit situations. It adopts high-side N-channel MOSFET architecture and has strong driving on and off capability. Through an efficient auxiliary power supply strategy: this reference design achieves 100-μA standby and 10-μA ship mode consumption: saving more energy and allowing longer shipping time and idle time. These features make this reference design highly applicable for e-bike and e-scooter battery pack applications.
Features
- Ultra-low current consumption:typical 100-μA when in standby modetypical 10-μA when in shipping modeHigh cell voltage accuracy without calibrations:±5 mV at 25 °C; ±10 mV at 0 °C–60 °C±15 mV at –40 °C to 85 °CRobust battery cell protection: including:Primary: cell overvoltage: cell undervoltage: two levels overcurrent discharge: overcurrent charge: discharge short circuit and overtemperatureSecondary: cell over voltage: cell undervoltage and overtemperatureOther system protections: including: cell open wire and thermal host watchdogReverse charger and high voltage on PACK sideHigh-side N-channel MOSFETs and strong driving capability
Applications
- Other industrial battery pack (>=10S)
- Battery pack: cordless power tool
- 2-wheeler & 3-wheeler battery pack
- Portable power station
Product Categories
- Power management