GFCI Controllers | FAN4149

接地故障断路器

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概览

FAN4149 是一款低功耗控制器，用于检测危险的接地和接地到零线故障的电流路径。FAN4149 应用电路会在有害触电发生之前打开负载触点。FAN4149 结合 FAN41501 自动监控数字控制器，可满足永久联接 GFCI 产品的 2015 UL943 自检要求。FAN4149 检测热线-接地故障和零线-线路/负载短路情况，并针对其提供保护。FAN41501 定期监控 FAN4149 和重要的 GFI 组件以符合 2015 UL943 要求。最少的组件数量和小型 6 引脚封装可实现一个高密度、灵活的应用方案。FAN4149 包含精确禁带 14 V 分路稳压器、精确低 VOS 感应放大器、时间延迟静噪滤波器、窗口检测比较器和 SCR 驱动器。分路稳压器运行时的静止电流低，可实现高价值、低功耗串行电源电阻。内部温度补偿分路稳压器、感应放大器和偏置电路提供了精确接地故障检测。这样就可以使用较大的组件型号，因此无需限制或微调外部组件。典型的 ±50 µV VOS 感应放大器偏移值允许直接直流耦合感应线圈。因此无需大型交流耦合电容器。内部延迟滤波器抑制了电感负载常见的高频率噪声尖峰。因此减少了误滋扰跳闸。SCR 驱动器增加了电流和温度补偿，可实现更宽的外部 SCR 选择范围。极少外部组件和 6 引脚 SOT23 封装可实现低成本、紧凑设计和布局。

  • 楼宇和住宅控制
  • 消费型设备

  • 满足 2015 UL943 自测要求（结合 FAN41501）
  • 精密感应放大器与带隙基准
  • 通过低 VOS 偏置实现检测线圈直接直流耦合
  • 内置噪声滤波器
  • 大电流 SCR 栅极驱动器
  • 可调敏感度
  • 500 µA 静态电流
  • 最少的外部元件
  • 适合 120 V 或 220 V 系统

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FAN4149M6X

Contact Sales

Lifetime

CAD Model

Pb

A

H

P

SOT-23-6

527AJ

1

260

REEL

3000

N

~NA~

-0.8

16

15

14

-35

85

Price N/A

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可靠性数据

Die Related Summary Data

Device: FAN4149M6X

Equivalent to wafer fab process: 3

产品技术

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

3

0

177026424

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Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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