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Power Factor Controllers | NCP1622
概览
6 引脚 PFC 控制器 NCP1622 适用于驱动 PFC 升压级。它基于创新的谷同步频率折回 (VSFF) 方法。 在此模式下，当电感器电流超过编程值 Vctrl,FF 时，该电路通常以临界导通模式 (CrM) 运行。当 Vcontrol 低于此预设置级别 Vctrl,FF 时，NCP1622（版本 [B**] 和 [D**]）将对频率进行线性降至约 30 kHz，直到 Vcontrol 达到跳过模式阈值。VSFF 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。与 FCCrM 控制器中的内部电路类似，即使在开关频率降低时也能实现接近一致的功率因数。该电路采用 TSOP6 封装，具有坚固紧凑的 PFC 级所需的功能，且外部组件很少。
- Offline Power Supply
- Flat panel TV
- High Power Adapters
- PC Power Supplies
- Lighting Ballasts
- Flat Screen TV
- All Off Line Appliances Requiring Power Factor correction
- Critical Conduction Mode with frequency foldback
- Valley Synchronized Frequency Fold-back (VSFF)
- Works with or without a transformer w/ ZCD winding
- Dynamic Response Enhancer
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NCP1622AEASNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
Y
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
17
Yes
Yes
No
$0.2645
More Details
NCP1622BCASNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
F
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
17
Yes
Yes
No
$0.3067
More Details
NCP1622BCCSNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
Y
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.2645
More Details
NCP1622BECSNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
Y
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.2645
More Details
NCP1622DCCSNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
Y
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.2645
More Details
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