Power Factor Controllers | NCP1612
概览
NCP1612 是一款有源功率因数校正 (PFC) 控制器，专门用作 AC-DC 适配器、平板电视、照明镇流器和其他中等功率离线转换器中的升压预转换器。该控制器基于创新的电流控制频率折回 (CCFF) 方法。在此模式下，当电感器电流超过编程值时，该电路通常以临界导通模式 (CrM) 运行。当电流低于此预设水平时，NCP1612 会将频率线性下降，当电流为空值时大约降至 20 kHz。CCFF 可在标称负载和轻型负载下最大程度提高能效。尤其待机损耗降至最低。该控制器具有丰富的保护功能组合，可正确处理运行和故障情况下的电源阵列。 此器件具有专门的 PFC_Okay 输出，尤其适用于 LLC 控制器的 PFC 级。
- Offline Power Supplies
- Lighting Ballasts
- LED Lighting Drivers and Power Supplies
- Flat TV
- All-In-One Computers
- High Powered Adapters
- LED Lighting
- Near Unity Power Factor
- Critical conduction mode with current controlled frequency foldback
- Dynamic Response Enhancer
- Soft Overvoltage Protection
- -500 mA/+800 mA Drive Capability
- Valley turn on
- Wide Vcc Range of 9.5-35 Vdc
- Two Vcc startup versions: 10.5 V (A) and 17 V (B)
- AC Line Brownout Detection
- Cycle-by-cycle switch current monitoring
- Saturated inductor and shorted boost or bypass diode detection
- PFC Okay Output
- Latch Off Input
- Independent bulk overvoltage and undervoltage monitoring
- Thermal Shutdown
- Open Ground Pin Fault Monitoring
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已停产
Pb
A
H
P
SOIC-10 NB
1
260
REEL
2500
No
DCM
Variable
Current Mode
Step-Up
Variable
35
500 / 800
9
Yes
Yes
Yes
Price N/A
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Pb
A
H
P
SOIC-10 NB
1
260
REEL
2500
No
CRM
DCM
Fixed
Current Mode
Step-Up
Variable
35
500 / 800
9
Yes
Yes
Yes
Price N/A
More Details
已停产
Pb
A
H
P
SOIC-10 NB
1
260
REEL
2500
No
CRM
DCM
Variable
Current Mode
Step-Up
Variable
35
500 / 800
9
Yes
Yes
Yes
Price N/A
More Details
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