NCP4390 Overview
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...
NCP4390 Key Features
- Charge Current Control for Better Transient Response and Easy
- Adaptive Synchronous Rectification Control with Dual Edge
- 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 Light-Load to Limit the Switching Frequency while Reducing Switching Losses
- Disabling SR at Light-Load Condition
- Protection Functions with Auto-Restart
- Over-Current Protection (OCP)
- Output Short Protection (OSP)