NCP4390 Datasheet (ON Semiconductor) - Advanced Secondary Side LLC Resonant Converter Controller

NCP4390, Advanced Secondary Side LLC Resonant Converter Controller

Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name 5VB PWMS FMIN FB COMP SS ICS CS RDT SR1DS SROUT2 SROUT1 PROUT2 PROUT1 VDD GND Description 5 V REF PWM mode entry level setting.

Minimum frequency setting pin.

Output voltage sensing for feedback control.

Output of error amplifier.

Soft

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 in

NCP4390 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