Power Factor Controllers | NCP1652
概览
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.
- High Current Battery Chargers
- Front Ends for Distributed Power Systems
- High Power Solid State Lighting
- Notebook Adapter
- 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
- 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
- High Accuracy Multiplier
- Adjustable Operating Frequency from 20 kHz to 250 kHz
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Obsolete
Pb
A
H
P
SOIC-16
1
260
REEL
2500
N
DCM
Fixed
Current Mode
Step-Down
100
20
1
9.3 - 11.3
Yes
Yes
YES
Price N/A
More Details
Obsolete
Pb
A
H
P
SOIC-16
1
260
REEL
2500
N
CCM
DCM
Fixed
Current Mode
Step-Down
100
20
1
9.3 - 11.3
Yes
Yes
YES
Price N/A
More Details
Obsolete
Pb
A
H
P
SOIC-20W
3
260
REEL
1000
N
CCM
DCM
Fixed
Current Mode
Step-Down
100
20
1
9.3 - 11.3
Yes
Yes
YES
Price N/A
More Details
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