NCP4318BLCDR2G

Power Supply Controllers, Monitors Overview

The NCP4318BLCDR2G is an advanced synchronous rectifier controller designed for LLC resonant converters. It integrates two gate drivers to support high-efficiency secondary-side rectification. The device operates with a supply voltage range of 0V to 35V and supports junction temperatures up to 125°C. Packaged in an 8-pin SOIC, it minimizes external component count while providing robust control for modern power supply architectures.

Power Supply Controllers, Monitors Feature Summary

• Integrates dual gate drivers for synchronous rectification in LLC resonant topologies
• Optimized for minimal external component requirements
• Supports high-temperature operation up to 125°C

Power Supply Controllers, Monitors Applications

• LLC resonant converter secondary side control
• High-efficiency AC/DC adapters
• Server and storage power supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the complete part number including the suffix 'LC' which indicates specific tape and reel packaging configurations. Confirm that the 125°C thermal rating aligns with your system's thermal design constraints. Ensure the 35V maximum supply voltage is sufficient for your specific transformer auxiliary winding or bootstrap circuit design. Cross-reference the SOIC-8 footprint dimensions with your PCB layout guidelines prior to procurement.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing LLC resonant converters requiring integrated synchronous rectification control. It is suitable for applications demanding reduced bill of materials through integrated driver functionality. Consider the 125°C operating temperature limit for high-density designs. Verify compatibility with the specific resonant tank parameters and transformer characteristics of the target power supply architecture.

Power Supply Controllers, Monitors Part Context

This component belongs to onsemi's NCP4318 family of synchronous rectifier controllers. It is engineered specifically for LLC resonant converters, offering a compact solution compared to discrete MOSFET drive approaches. The series focuses on reducing complexity and improving efficiency in secondary-side rectification stages for modern switching power supplies.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official onsemi resources for direct pin-compatible alternatives within the same product family.