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NCP1623是一款驱动PFC升压级的控制器。创新谷值同步频率折返(VSFF)方法,能够在临界导通模式 (CrM) 下运行,直至功率降至阈值电平以下。PFC控制器进入断续导通模式(DCM),随着负载进一步衰减,死区时间增加(频率折返)。在标称负载和轻负载下,VSFF能最大限度地提高效率。此外,即使当开关频率降低时,其内部电路也能使功率因数接近统一。
采用TSOP-6封装,该电路具备构建强固而紧凑的PFC级所需的所有特性,A版本提供升压跟随器,可大幅提升低线路效率。这款控制器还可采用SOIC-8封装,提供由禁用引脚外部控制的超低功耗模式。
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CAD Models
Compliance
Package Type
Case Outline
MSL Type
MSL Temp (°C)
Container Type
Container Qty.
ON Target
PFC Mode
Frequency Operation
Control Mode
Topology
fSW Typ (kHz)
VCC Max (V)
Drive Cap. (mA)
UVLO (V)
Latch
UVP
Inhibition
Reference Price
NCP1623ADR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
F
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.3667
More Details
NCP1623ASNT1G
Active
Pb
A
H
P
TSOP-6
1
260
REEL
3000
F
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.3267
More Details
NCP1623CDR2G
Active
Pb
A
H
P
SOIC-8
1
260
REEL
2500
F
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
$0.3667
More Details
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