摘要
针对锂电池应用特点,设计了用于电池管理芯片的过流保护功能模块。电路采用0.6μm N衬底双阱CMOS工艺实现。HSPICE后仿真结果表明,该模块不仅能对锂电池放电过程实现三级过流检测和保护,还能对充电过程中的过流进行有效管理。通过功耗管理和采用基于亚阈值MOS管的电路,模块消耗电流仅为1.2μA,能充分满足较复杂的电池管理芯片的需要。
According to Li-ion battery application characteristics, the over-current protection block in battery management IC is designed. The block can be realized with 0.6μm N-sub twin-well CMOS process. HSPICE post-simulation results show that the block not only can implement three classes' over-current detection and protection during Li-ion battery discharging, but also can efficiently manage the over-current during charging. The block consumes a low current with 1.2p, A by adopting power management and the circuit based on sub-threshold MOSFET, so it can satisfy the demands of complicated battery management ICs.
出处
《电路与系统学报》
CSCD
北大核心
2006年第1期24-28,共5页
Journal of Circuits and Systems
关键词
锂离子电池
电池管理芯片
过流保护
Li-ion battery
battery management IC
over-current protection