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高度集成的 FAN4800A/C 和 FAN4801/02/02L 特别为由升压 PFC 和 PWM 组成的电源设计。仅需要极少的外部元件便可实现各种保护/补偿。采用 16 引脚 DIP 和 SOP 封装。PWM 可用于电流或电压模式中。在电压模式中,基于 PFC 输出总线的前馈可减少次级输出的纹波。与先前的产品相比,ML4800、FAN4800 和 FAN4800A/C 具有较低的工作电流,可减少外部器件的功耗。FAN4800A/C 和 FAN4801/02/2L 具有 PWM 的 49.9% 精确占空比(最大值),从而能够延长保持时间。ML4800 和 FAN4800 没有欠压保护和 PFC 软启动功能。为了评估 FAN4800A/C、FAN4801/02/02L 替代现有的 FAN4800 和 ML4800 电路板,在精调之前必须完成五件事情:1. 将 RAC电阻从原有值改为更高的电阻值:介于 6 MΩ 和 8 MΩ 之间。2. 将 RT/CT 引脚从现有值改为 RT=6.8KΩ 和 CT=1000pF,以获得 fPFC=64KHz、fPWM=64KHz。3. 对于线输入在 85VAC 至 270 VAC之间的通用输入应用,VRMS 引脚的电压在 VIN=85 VAC下需要设置为 1.224 V。FAN4801/02/02L 的 Vrms的两个极点不需要比 FAN4800 慢很多,大约 5 至 10 倍。4. 在满载下,VEA平均电压需要为 ~4.5V,并且 VEA的纹波需要小于 400 mV。5. 对于软启动引脚,软启动电流已降至 FAN4800 电容的一半。
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FAN4801NY
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Device: FAN4801NY
Equivalent to wafer fab process: CN
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平均故障间隔时间/平均无故障时间(按小时计算)
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CN
6
425600109
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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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