NCP1652: Controller, PFC, High Efficiency, Single Stage

The NCP1652 is a highly integrated controller for implementing power factor correction (PFC) and isolated step down ac-dc power conversion in a single stage, resulting in a lower cost and reduced part count solution. This controller is ideal for notebook adapters, battery chargers and other off-line applications with power requirements between 75 W and 150 W. The single stage is based on the flyback converter and it is designed to operate in continuous conduction (CCM) or discontinuous conduction (DCM) modes.The NCP1652 increases the system efficiency by incorporating a secondary driver with adjustable nonoverlap delay for controlling a synchronous rectifier switch in the secondary side, an active clamp switch in the primary or both. In addition, the controller features a proprietary Soft-Skip™ to reduce acoustic noise at light loads. Other features found in the NCP1652 include a high voltage startup circuit, voltage feedforward, brown out detector, internal overload timer, latch input and a high accuracy multiplier.

Features
  • Dual Control Outputs with Adjustable Non Overlap Delay for Driving a Synchronous Rectifier Switch, an Active Clamp Switch or Both
  • Voltage Feedforward
  • Frequency Jittering
  • Proprietary Soft-Skip™ at Light Loads
  • High Accuracy Multiplier
  • Brown Out Detector
  • Internal 150 ms Fault Timer
  • Independent Latch-Off Input Facilitates Implementation of Overvoltage and Overtemperature Fault Detectors
  • Single Stage PFC and Isolated Step Down Converter
  • Continuous or Discontinuous Conduction Mode Operation
  • Average Current Mode Control (ACMC), Fixed Frequency Operation
  • Adjustable Operating Frequency from 20 kHz to 250 kHz
  • These are Pb-Free Devices
Benefits
  • Improves Efficiency
  • Improves Loop Response
  • Reduces EMI Signature
  • Reduces Acoustic Noise
  • Reduces Input Line Harmonics
Applications
  • High Current Battery Chargers
  • Front Ends for Distributed Power Systems
  • High Power Solid State Lighting
End Products
  • Notebook Adapter
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCP1652 Design WorksheetNCP1652 DWS.XLS (1549.0kB)0
Package Drawings (2)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD751B-05 (38.2kB)K
SOIC-20 WB751D-05 (36.3kB)H
Application Notes (2)
Document TitleDocument ID/SizeRevisionRevision Date
A 48 V/ 2 A High Efficiency, Single Stage, Isolated Power Factor Corrected Power Supply for LED Drivers and Telecom PowerAND8394/D (200.0kB)5
A 90 W/19V High Efficiency, Notebook Adapter Power Supply with Inherent Power Factor CorrectionAND8397/D (145.0kB)1
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Controller, PFC, High Efficiency, Single StageNCP1652/D (340.0kB)3
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP1652ADR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$1.0
NCP1652DR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$1.0
NCP1652DWR2GActivePb-free Halide freeSOIC-20W751D-053Tape and Reel1000$1.0
Specifications
ProductPFC ModeFrequency OperationControl ModeTopologyfSW Typ (kHz)VCC Max (V)Drive Cap. (mA)UVLO (V)LatchUVPInhibition
NCP1652ADR2GDCMFixedCurrent ModeStep-Down1002019.3 - 11.3YesYesYES
NCP1652DR2GCCM DCMFixedCurrent ModeStep-Down1002019.3 - 11.3YesYesYES
NCP1652DWR2GCCM DCMFixedCurrent ModeStep-Down1002019.3 - 11.3YesYesYES
Controller, PFC, High Efficiency, Single Stage (340.0kB) NCP1652
NCP1652 Design Worksheet NCP1652
A 48 V/ 2 A High Efficiency, Single Stage, Isolated Power Factor Corrected Power Supply for LED Drivers and Telecom Power NCP1652
A 90 W/19V High Efficiency, Notebook Adapter Power Supply with Inherent Power Factor Correction NCP1652
SOIC 16 LEAD MC14504B
SOIC-20 WB NLSX3018
NCP1652