摘要
针对便携式移动电源在充放电时的电量显示控制问题,文中基于常用的电池电量显示标准,设计了一种控制移动电源在充电与放电时电量显示状态的电路,该电路将电池的分压与芯片中升压模块的基准输入比较器比较,结合时钟信号进行逻辑控制,将电量显示分为多个阶段,采用4个LED显示。同时当芯片其他模块工作异常时,引入状态异常指示,提醒用户采取措施。采用TSMC0.35μm工艺,在Cadance平台Spectre环境下进行仿真,仿真结果证明设计达到了预期效果。
This paper designs a circuit for controlling the power display status when the mobile power is under charging and discharging. In this circuit, the battery voltage＇s dividers and boost module＇s reference are input into the comparator, combined with the clock signal for logic control. The power display is divided into multiple stages. Power display is achieved with 4 LEDs. In case of anomaly of other modules of the chip, an abnormal state indicator is in- troduced to remind the users. This circuit uses TSMC0.35 μm process. Cadence simulation in Spectre environment shows that the design achieves the desired effect.
出处
《电子科技》
2016年第8期14-16,20,共4页
Electronic Science and Technology
关键词
电量显示控制
充放电
电路异常指示
power display control
charging and discharging
circuit exception indicates
