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NCP1616 - High Voltage High Efficiency Power Factor Correction Controller

Description

1 FB This pin receives a portion of the PFC output voltage for the regulation and the dynamic response enhancer (DRE) that speeds up the loop response when the output voltage drops below 95.5% of the regulation level.

Ove

Features

  • necessary for robust and compact PFC stages, with few external components. General Features.
  • High Voltage Start.
  • Up Circuit with Integrated Brownout Detection.
  • Input to Force Controller into Standby Mode.
  • Skip Mode Near the Line Zero Crossing.
  • Fast Line / Load Transient Compensation.
  • Valley Switching for Improved Efficiency.
  • High Drive Capability:.
  • 500 mA/+800 mA.
  • Wide VCC Range: from 9.5 V to 28 V.
  • Input Volt.

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Datasheet Details

Part number NCP1616
Manufacturer onsemi
File Size 1.29 MB
Description High Voltage High Efficiency Power Factor Correction Controller
Datasheet download datasheet NCP1616 Datasheet

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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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NCP1616 High Voltage High Efficiency Power Factor Correction Controller The NCP1616 is a high voltage PFC controller designed to drive PFC boost stages based on an innovative Current Controlled Frequency Foldback (CCFF) method. In this mode, the circuit operates in critical conduction mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1616 linearly decays the frequency down to a minimum of about 26 kHz at the sinusoidal zero−crossing. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. Innovative circuitry allows near− unity power factor even when the switching frequency is reduced.
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