推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

高精度双向DC电源电流采样电路设计

更新时间:2020-08-09 09:03:18 大小:342K 上传用户:songhuahua查看TA发布的资源 标签:双向DC电源电流采样 下载积分:5分 评价赚积分 (如何评价?) 收藏 评论(1) 举报

资料介绍

为适应双向DC/DC功率变换的电流采样需求,一种高精度高边电流采样电路被提出。其基本思想是在功率电路的高边串入采样电阻,借助电流镜原理并引入偏置电流电路,将双向电流均转换为正向电压输出。通过理论分析与仿真结合的方法对电流镜采样原理及4种不同的偏置电流电路方案进行对比,最后通过实验数据验证了高精度高边电流采样电路的有效性。实验数据表明,该采样电路可在-25~75℃的温度工作范围内,针对-10~+10 A范围内的电流采样实现优于5%的采样精度。

Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...

部分文件列表

文件名 大小
高精度双向DC电源电流采样电路设计.pdf 342K

全部评论(1)

  • 2021-06-28 12:21:14Powerxys

    很好的资料,谢谢分享