UCC24612-1DBVT

Power Supply Controllers, Monitors Overview

The UCC24612-1DBVT is a high-performance synchronous rectifier controller and driver designed for standard and logic-level N-channel MOSFET power devices. It implements near-ideal diode emulation to reduce output rectifier losses and indirectly primary side losses. The device utilizes drain-to-source (VDS) sensing control, enabling compatibility with multiple topologies including active clamp flyback, QR/DCM/CCM flyback, and LLC converters. Integrated features simplify design efforts across various applications and frequencies.

Power Supply Controllers, Monitors Feature Summary

• Implements near-ideal diode emulation to minimize conduction losses in the output rectifier stage.
• Features VDS sensing control scheme for broad topology compatibility without external current sensors.
• Includes adaptive minimum off-time to enhance efficiency and noise immunity during operation.
• Provides proportional gate-drive and CCM cycle limit pre-turn-off for robust continuous conduction mode performance.

Power Supply Controllers, Monitors Applications

• Active clamp flyback power supplies
• Quasi-resonant, DCM, and CCM flyback converters
• LLC resonant converter designs

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix '1' against official Texas Instruments documentation to confirm the intended minimum on-time configuration. Ensure the SOT-23-5 package variant matches the required PCB footprint. Cross-reference the datasheet revision date to validate that all listed electrical characteristics remain current for production use.

Power Supply Controllers, Monitors Selection Notes

Select this component when designing systems requiring efficient secondary-side rectification without auxiliary windings. The VDS sensing approach eliminates the need for current sense transformers or resistors, simplifying the magnetic design. Consider the wide operating voltage ranges for implementation in systems with outputs up to 28 V while maintaining high efficiency standards.

Power Supply Controllers, Monitors Part Context

This part belongs to the UCC24612 family of synchronous rectifier controllers from Texas Instruments. The family includes variants such as UCC24612-1 and UCC24612-2, which offer different minimum on-times to provide additional noise immunity. These controllers are engineered to help systems meet stringent efficiency standards like DoE Level VI and CoC Tier 2.

Power Supply Controllers, Monitors Replacement Considerations

UCC24612-2DBVT