NCP1680: Totem Pole Critical Conduction Mode (CrM) Power Factor Correction Controller

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The NCP1680 is a CrM PFC controller IC designed to drive the bridgeless totem-pole PFC topology. The bridgeless totem-pole PFC is a power factor correction architecture that consists of a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in the power stage efficiency.
特長   利点
     
  • Totem Pole PFC Topology Eliminates Input Diode Bridge
 
  • Enables High Efficiency & Compact Design
  • Critical Conduction Mode (CrM) Operation
 
  • Optimized Performance Across Power Levels
  • Discontinuous Conduction Mode (DCM) with Valley Turn On Under Light Load Condition
 
  • Optimized Performance Across Power Levels
  • Frequency Foldback in DCM With 25 kHz Minimum Frequency
 
  • Prevents Operation in Audible Range
  • Skip Mode in Very Light Load Condition
 
  • Complies with Energy Efficiency Regulatory Standards
  • Proprietary Current Sense Scheme
 
  • Cycle-by-Cycle Current Limit Without Hall Effect Sensor
  • Digital Voltage Loop Compensation
 
  • Simplifies Design & Reduces External Components
  • AC Line Monitoring Circuit & AC Phase Detection
 
  • Simplifies Design & Reduces External Components
  • Near Unity Power Factor in All Operating Modes
 
  • Complies with Energy Efficiency Regulatory Standards
  • PFC OK Indicator
 
  • Allows Communication with Downstream Converter to Optimize System Performance
アプリケーション   最終製品
  • Power Factor Correction
  • Offline Power Supply
 
  • Industrial Power Supplies
  • Telecom 5G Power
  • Networking Power
  • Gaming Console Power Supplies
  • UHD TV Power Supplies
  • Computing Power Supplies
Availability & Samples
Specifications
製品
状態
Compliance
内容
外形
MSL
梱包形態
予算 価格/Unit
タイプ
Case Outline
タイプ
Temperature
タイプ
数量
NCP1680AAD1R2G Active
Pb-free
Halide free
NCP1680, Totem Pole Critical Conduction Mode (CrM) Power Factor Correction Controller SOIC-16 751B-05 1 260 Tape and Reel 2500 $3.2952
NCP1680ABD1R2G Active
Pb-free
Halide free
NCP1680, Totem Pole Critical Conduction Mode (CrM) Power Factor Correction Controller SOIC-16 751B-05 1 260 Tape and Reel 2500 $2.024
マーケットリードタイム(週) : Contact Factory
マーケットリードタイム(週) : 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
NCP1680AAD1R2G  
 $3.2952 
Pb
H
 Active   
CRM
Variable
Current/Voltage Mode
Step-Up
Variable
30
100 / 100
10.5
Yes
Yes
No
SOIC-16
NCP1680ABD1R2G  
 $2.024 
Pb
H
 Active   
CRM
Variable
Current/Voltage Mode
Step-Up
Variable
30
100 / 100
10.5
Yes
Yes
No
SOIC-16
Case Outline
751B-05   
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特集ビデオ
Power Factor Improvement Methods with Their Advantages & Disadvantages
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