NCP1623: Critical Conduction Mode (CrM) Power Factor Correction Controller, Follower Boost

Datasheet: Enhanced, High-Efficiency Power Factor Controller
Rev. 0 (176kB)
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The NCP1623 is a controller designed to drive PFC boost stages. Based on an innovative Valley Synchronized Frequency Fold-back (VSFF) method, it operates in critical conduction mode (CrM) until the power drops below a threshold level. The PFC controller enters discontinuous conduction mode (DCM) with increased dead-time as the load further decays (frequency foldback). VSFF maximizes the efficiency at both nominal and light loads. In addition, an internal circuitry ensures a near-unity power factor even when the switching frequency is reduced.

Housed in a TSOP-6 package, the circuit also incorporates the features necessary for robust and compact PFC stages, with few external components. The A version provides the follower boost capability for drastic low-line efficiency improvement. This controller is also available in the SOIC-8 package, which features an ultra-low-consumption mode externally controlled by the disable pin.

特性   优势
     
  • Critical Conduction Mode (CrM) in heavy load conditions
  
  • Maximizes the efficiency at both nominal and light loads
  • Discontinuous Conduction Mode (DCM) with Frequency Foldback in light load
  
  • Maximizes the efficiency at both nominal and light loads
  • Follower Boost capability (NCP1623A only)
  
  • Improves low line and full load efficiency
  • Sleep Mode with circuit consumption below 100 µA (SOIC-8 version only)
  
  • Improves no load and ultra light load efficiency
  • Zero Current Detection via Drain sensing
  
  • Simplifies PFC inductor design, eliminates auxiliary winding
  • Dynamic Response Enhancer
  
  • Fast line & load transient response
  • Near unity power factor over the load range
  
  • Meets typical power supply spec
应用   终端产品
  • Power Factor Correction
  • Offline Power Supply
  
  • USB PD Mobile & Laptop Charging
  • Industrial Power Supplies
  • Computing Power Supplies
  • Gaming Power Supplies
技术文档及设计资源
设计和开发工具 (2) 封装图纸 (2)
设计注释 (1) 视频 (1)
应用注释 (3) 评估板文档 (1)
数据表 (1)  
Availability & Samples
Specifications
产品
状况
Compliance
具体说明
封装
MSL
容器
预算价格 (1千个数量的单价）
类型
外形
类型
Temperature
类型
数量
NCP1623ADR2G Active 
Pb-free
Halide free
NCP1623, Critical Conduction Mode (CrM) PFC Controller SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3467
NCP1623ASNT1G Active
Pb-free
Halide free
NCP1623, Critical Conduction Mode (CrM) PFC Controller TSOP-6 318G-02 1 260 Tape and Reel 3000 $0.3267
NCP1623CDR2G Active 
Pb-free
Halide free
NCP1623, Critical Conduction Mode (CrM) PFC Controller SOIC-8 751-07 1 260 Tape and Reel 2500 $0.3467
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory
市场订货至交货的时间(周) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
PFC Mode
Frequency Operation
Control Mode
Topology
fSW Typ (kHz)
VCC Max (V)
Drive Cap. (mA)
UVLO (V)
Latch
UVP
Inhibition
Package Type
NCP1623ADR2G  
 NCP1623, Critical Conduction Mode (CrM) PFC Controller 
 $0.3467 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
SOIC-8
NCP1623ASNT1G  
 NCP1623, Critical Conduction Mode (CrM) PFC Controller 
 $0.3267 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
TSOP-6
NCP1623CDR2G  
 NCP1623, Critical Conduction Mode (CrM) PFC Controller 
 $0.3467 
Pb
H
 Active   
CRM
Variable
Current Mode
Step-Up
Variable
30
500 / 800
10.5
Yes
Yes
No
SOIC-8
外形
751-07    318G-02   
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