NCP4318
NCP4318 is Advanced Synchronous Rectifier Controller manufactured by onsemi.
Advanced Synchronous Rectifier Controller for LLC Resonant Converter
NCP4318 is an advanced synchronous rectification (SR) controller for LLC resonant converter with minimum external ponents. 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 pensates 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.
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 Current (100 m A) in Green Mode
- Soft Start with 0 V / 6 V Gate Output Voltage
- Short Turn- on and Turn- off Delay Time (30 ns / 30 ns)
- High Gate Sourcing and Sinking Current (1.5 A / 4.5 A)
- Wide Operating Supply Voltage Range from 6.5 V to 35 V
- Wide Operating Frequency Range (22 k Hz to 500 k Hz)
- SOIC- 8 and SOIC- 8 EP Packages
- These Devices are Pb- Free and are Ro HS pliant
Applications
- High Power Density Adapters
- Large Screen LED- TV and OLED- TV Power Supplies
- High Efficiency Desktop and Server Power Supplies
- Networking and Tele Power Supplies
- High Power LED Lighting
DATA SHEET .onsemi.
1 SOIC- 8 EP CASE...
