NCP4307AASNT1G

Power Supply Controllers, Monitors Overview

The NCP4307AASNT1G is a high-side secondary side synchronous rectification driver designed for high-efficiency switch-mode power supply topologies. It features dual VCC pins to select the optimal source, minimizing losses across wide output voltage ranges. The device operates from a self-supplied internal 200V CS pin, enabling high-side configuration without auxiliary supplies. Key electrical parameters include a peak output current of 7 A source and 2 A sink, a maximum supply voltage of 35 V, and an operating temperature range of -40°C to +125°C. Propagation delay is typically 60 ns, with rise and fall times of 60 ns and 25 ns respectively.

Power Supply Controllers, Monitors Feature Summary

• Self-supply capability from an internal 200V CS pin eliminates the need for auxiliary power supplies in high-side configurations.
• Dual VCC pin architecture allows selection of the optimal voltage source to minimize conduction losses across varying output voltages.
• Integrated positive dv/dt detection and light-load detection ensure reliable operation and improved efficiency under dynamic conditions.
• Kelvin connection to the MOSFET source terminal facilitates accurate sensing and high-efficiency performance at full load.

Power Supply Controllers, Monitors Applications

• USB Power Delivery (PD) adapters
• High-density AC/DC power supplies
• LCD TV power stages
• General high-efficiency SMPS topologies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'AA' against the manufacturer's official ordering information sheet to confirm pinout and functional specifications. Ensure the TSOP-6 package matches the target PCB footprint. Confirm RoHS compliance status through the latest datasheet revision notes before finalizing component selection.

Power Supply Controllers, Monitors Selection Notes

Select this component for applications requiring high-side synchronous rectification control without external bias generation. The dual VCC feature makes it suitable for variable output voltage designs. Consider the 7A/2A drive strength for driving larger SR MOSFETs efficiently. Verify that the input signal timing aligns with the controller's minimum on/off time requirements.

Power Supply Controllers, Monitors Part Context

This part belongs to the NCP4307 series of secondary side synchronous rectification drivers. It is specifically tailored for controlling SR MOSFETs in DCM/CCM flyback, quasi-resonant flyback, and forward converter topologies. The series emphasizes versatility and high performance for modern compact power adapters.

Power Supply Controllers, Monitors Replacement Considerations

NCP4306: Similar secondary side driver but may differ in specific drive strength or feature set; verify datasheet compatibility.