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公司介绍
高度集成的 FL7921R 将功率因数控制器 (PFC) 和准谐振 PWM 控制器相结合。这种集成提供了成本高效的设计,可减少外部组件数量。对于 PFC,FL7921R 使用控制导通时间技术提供调节的直流输出电压,执行自然的功率因数校正。创新的 THD 优化器降低了零交叉期间的输入电流失真,改善了 THD 性能。无论 PWM 级负载条件如何,PFC 功能总是处于打开状态,以确保在轻负载条件下实现高 PF。对于 PWM,FL7921R 提供了若干提高电源系统性能的功能:谷检测、绿色模式运行、高/低线路过功率补偿。保护功能包括带自动恢复的辅助侧开环和过电流保护、外部锁存触发、通过 RT 引脚和外部 NTC 电阻可调的超温保护、内部超温关断、VDD 引脚 OVP、用于输出 OVP 的 DET 引脚过电压,以及用于交流输入电压 UVP 的欠电压/过电压保护。除 PWM 电流感应引脚开路保护之外,所有保护均为自动恢复模式。
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CAD Models
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MSL Temp (°C)
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VI Min (V)
VI Max (V)
VO Max (V)
IO Max (mA)
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Reference Price
FL7921RMX
Active
Pb
A
H
P
SOIC-16
3
260
REEL
2500
Y
PFC and PWM(QR Flyback) Combo
50
500
19 VGATE
80/40 ns - Rise/Fall time
Variable
$0.6332
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可靠性数据
Die Related Summary Data
Device: FL7921RMX
Equivalent to wafer fab process: CN
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
CN
6
425600109
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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.)
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