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NCP1271 - Standby PWM Controller

Features

  • Fixed.
  • Frequency Current.
  • Mode Operation with Ramp Compensation and Skip Cycle in Standby Condition.
  • Timer.
  • Based Fault Protection for Improved Overload Detection.
  • “Soft.
  • Skip Mode” Technique for Optimal Noise Control in Standby.
  • Internal High.
  • Voltage Startup Current Source for Lossless Startup.
  • "5% Current Limit Accuracy over the Full Temperature Range.
  • Adjustable Skip Level.
  • Internal Latch for Easy Implementation of Overvo.

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Datasheet preview – NCP1271

Datasheet Details

Part number NCP1271
Manufacturer ON Semiconductor
File Size 366.69 KB
Description Standby PWM Controller
Datasheet download datasheet NCP1271 Datasheet
Additional preview pages of the NCP1271 datasheet.

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Full PDF Text Transcription

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DATA SHEET www.onsemi.com Soft-Skipt Mode Standby PWM Controller with Adjustable Skip Level and External Latch NCP1271 The NCP1271 represents a new, pin to pin compatible, generation of the successful 7−pin current mode NCP12XX product series. The controller allows for excellent stand by power consumption by use of its adjustable Soft−Skip mode and integrated high voltage startup FET. This proprietary Soft−Skip also dramatically reduces the risk of acoustic noise. This allows the use of inexpensive transformers and capacitors in the clamping network. Internal frequency jittering, ramp compensation, timer−based fault detection and a latch input make this controller an excellent candidate for converters where ruggedness and component cost are the key constraints.
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