NCP1631 控制器用于 2 相交错式功率因数校正预转换器。交错由并联的两个小级组成,代替了一个大级。此方式具有若干优点,如实施简单、能够使用更小组件,更好的散热。这些属性使得该交错式 PFC 拓扑结构适用于薄型应用,如平板电视和超薄笔记本电脑适配器。交错还可以扩展到高能效且成本高效(无需低 trr 二极管)的临界导通运行模式的功率范围。NCP1631 在频率箝位临界导通模式 (FcCrM) 下运行。该电路利用频率折回将箝位频率作为功率的函数进行线性降低。因此,NCP1631 在整个负载范围内提供了优化的能效。另外,NCP1631 驱动器具有 180 相移位,可大大减少电流波纹,因此降低了 EMI,减少了大容量电容器中的 rms 电流。NCP1631 结合了构建耐用紧凑的交错式 PFC 级所需的所有功能,且外部组件数量极少。采用 SOIC-16 封装。
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CAD Models
Compliance
Package Type
Case Outline
MSL Type
MSL Temp (°C)
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Container Qty.
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PFC Mode
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Control Mode
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NCP1631DR2G
Active
Pb
A
H
P
SOIC-16
1
260
REEL
2500
Y
CRM
Variable
Voltage Mode
Step-Up
Up to 500
20
500 / 500
9.5 - 12
Yes
Yes
YES
$0.792
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可靠性数据
Die Related Summary Data
Device: NCP1631DR2G
Equivalent to wafer fab process: VHVIC
产品技术
产品技术
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
VHVIC
2
2577173853
More Details
Re-calculate Data
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.)