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NCP1207 - PWM Current-Mode Controller

General Description

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offers a fixed overvoltage detection level of 7.2 V.

Key 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.

📥 Download Datasheet

Datasheet Details

Part number NCP1207
Manufacturer onsemi
File Size 201.58 KB
Description PWM Current-Mode Controller
Datasheet download datasheet NCP1207 Datasheet

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NCP1200A PWM Current-Mode Controller
NCP1200CH PWM Controller
NCP1200D PWM Controller
NCP1201 PWM Current-Mode Controller
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NCP1205 Single Ended PWM Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
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.