【应用】意瑞半导体霍尔电流传感器CH704助力充电桩设计,支持±200A电流检测
充电桩是新能源汽车的充电基础设施,随着新能源汽车的推广普及,充电桩的需求也越来越多,为缩短充电时间,满足用户快速冲电的需求,充电桩的功率都很大,由I=P/U可知,电压一定的情况下,电流也就越大。
国内某一客户,在之前的充电桩设计中,用的是国外的品牌,但由于各种原因,现需要国产芯片来替代。意瑞半导体霍尔电流传感器CH704系列支持大电流检测:±50A, ±100A, ±150A, ±200A,其内置0.1mΩ的初级导体电阻,有效降低芯片发热。
内部框图:
意瑞半导体CH704的优势:
1、 最高支持支持±200A电流检测,CH704A系列通过AEC-Q100车规认证;
2、 内置0.1mΩ的初级导体电阻,有效降低芯片发热;
3、 导电路径的端子与传感器引线电气隔离,在高侧电流检测应用时,无需使用高侧差分放大器或其它隔离技术,可降低成本;
4、 EEPROM存储器中存储了灵敏度和偏置温度特性的系数,可进行补偿,实现高分辨率偏移和灵敏度微调;
5、 出厂前芯片已做好灵敏度和静态(零电流)输出电压的校准,在全温度范围内提供±2%的典型准确性。
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电子商城
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可定制LED组件/LED传感/UV模组的电压、电流、波长等性能参数,电压:3-24V,,电流:30-3500mA,波长:270-940nm;材质:食品级POM,阻燃PC;防水等级:IP20-IP68。
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