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NCP4318 - Advanced Synchronous Rectifier Controller

General Description

Synchronous rectifier drain sense input.

Key Features

  • Mixed Mode SR Turn.
  • off Control.
  • Anti Shoot.
  • through Control for Reliable SR Operation.
  • 200 V.
  • rated Drain Sensing and Dedicated Source Sensing Pins.
  • Advanced Adaptive Dead Time Control.
  • SR Current Inversion Detection.
  • Adaptive Minimum Turn.
  • on Time for Noise Immunity.
  • SR Conduction Time Increase Rate Limitation.
  • Multi.
  • level Turn.
  • off Threshold Voltage.
  • Adaptive Gate Voltage (10 V, 6 V).
  • Low Operating C.

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Datasheet Details

Part number NCP4318
Manufacturer onsemi
File Size 1.35 MB
Description Advanced Synchronous Rectifier Controller
Datasheet download datasheet NCP4318 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.

View original datasheet text
Advanced Synchronous Rectifier Controller for LLC Resonant Converter NCP4318 NCP4318 is an advanced synchronous rectification (SR) controller for LLC resonant converter with minimum external components. It has two gate drivers for driving the SR MOSFETs rectifying the outputs of the secondary transformer windings. The two gate drivers have their own drain and source sensing pins and operate independently of each other. The advanced adaptive dead time control compensates the voltage across parasitic inductance to minimize the body diode conduction and maximize the system efficiency. The advanced turn−off control algorithm allows stable SR operation over entire load range. NCP4318 has two versions of pin assignment – NCP4318A, NCP4318B, and two types of package – SOIC−8 and SOIC−8 EP.