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NCP4390 - Advanced Secondary Side LLC Resonant Converter Controller

Description

Description 5 V REF PWM mode entry level setting.

Minimum frequency setting pin.

Output voltage sensing for feedback control.

Features

  • Secondary Side PFM Controller for LLC Resonant Converter with Synchronous Rectifier Control.
  • Charge Current Control for Better Transient Response and Easy Feedback Loop Design.
  • Adaptive Synchronous Rectification Control with Dual Edge Tracking.
  • Closed Loop Soft.
  • Start for Monotonic Rising Output.
  • Wide Operating Frequency (39 kHz ~ 690 kHz).
  • Green Functions to Improve Light.
  • Load Efficiency.
  • Symmetric PWM Control at Lig.

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Datasheet preview – NCP4390

Datasheet Details

Part number NCP4390
Manufacturer ON Semiconductor
File Size 760.74 KB
Description Advanced Secondary Side LLC Resonant Converter Controller
Datasheet download datasheet NCP4390 Datasheet
Additional preview pages of the NCP4390 datasheet.

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Full PDF Text Transcription

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DATA SHEET www.onsemi.com Advanced Secondary Side LLC Resonant Converter Controller with Synchronous Rectifier Control NCP4390 The NCP4390 is an advanced Pulse Frequency Modulated (PFM) controller for LLC resonant converters with Synchronous Rectification (SR) that offers best in class efficiency for isolated DC/DC converters. It employs a current mode control technique based on a charge control, where the triangular waveform from the oscillator is combined with the integrated switch current information to determine the switching frequency. This provides a better control−to−output transfer function of the power stage simplifying the feedback loop design while allowing true input power limit capability.
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