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L4986 - CCM PFC controller

General Description

The L4986 is a peak current-mode PFC controller for boost converter with a proprietary multiplier “emulator” which in addition to the innovative THD optimizers guarantee very low Total Harmonic Distortion (THD) performance in all operating conditions.

Key Features

  • Peak current mode CCM-operated.
  • 800 V high voltage startup with integrated input voltage sensing.
  • Active input filter capacitor discharge.
  • Proprietary multiplier “emulator” with minimum THD of line current in all operating conditions (CCM and DCM).
  • Extremely few external components.
  • Protections: feedback loop failure, OVP, OCP, inductor saturation, brown-in, brownout (compliant to medical SMPS standards).
  • Inductor current sense.

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Other Datasheets by STMicroelectronics

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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.

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L4986 Datasheet CCM PFC controller with high voltage startup Features • Peak current mode CCM-operated • 800 V high voltage startup with integrated input voltage sensing • Active input filter capacitor discharge • Proprietary multiplier “emulator” with minimum THD of line current in all operating conditions (CCM and DCM) • Extremely few external components • Protections: feedback loop failure, OVP, OCP, inductor saturation, brown-in, brownout (compliant to medical SMPS standards) • Inductor current sense • Disable and low consumption function • In-rush current monitoring • Soft-start for smooth startup • 1.