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NCP1207 - PWM Current-Mode Controller

Datasheet Summary

Description

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offers a fixed overvoltage detection level of 7.2 V.

Features

  • Pb.
  • Free Packages are Available.
  • Free.
  • Running Borderline/Critical Mode Quasi.
  • Resonant Operation.
  • Current.
  • Mode with Adjustable Skip.
  • Cycle Capability.
  • No Auxiliary Winding VCC Operation.
  • Auto.
  • Recovery Overcurrent Protection.
  • Latching Overvoltage Protection.
  • External Latch Triggering, e. g. Via Overtemperature Signal.
  • 500 mA Peak Current Source/Sink Capability.
  • Intern.

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Datasheet preview – NCP1207

Datasheet Details

Part number NCP1207
Manufacturer ON Semiconductor
File Size 201.58 KB
Description PWM Current-Mode Controller
Datasheet download datasheet NCP1207 Datasheet
Additional preview pages of the NCP1207 datasheet.

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Full PDF Text Transcription

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NCP1207 PWM Current−Mode Controller for Free Running Quasi−Resonant Operation The NCP1207 combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi−Resonant operation). Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level. As this happens at low peak current, no audible noise can be heard. An internal 8.0 ms timer prevents the free−run frequency to exceed 100 kHz (therefore below the 150 kHz CISPR−22 EMI starting limit), while the skip adjustment capability lets the user select the frequency at which the burst foldback takes place.
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