UCC2891D

DC DC Switching Controllers Overview

The UCC2891D is a current-mode active clamp flyback controller designed for offline AC/DC power supplies. It supports flyback and forward topologies with a switching frequency up to 1 MHz. The device features a maximum duty cycle of 73% and delivers an output current capability of 2.5 A. It operates within a temperature range of -40°C to +85°C and is housed in a 16-pin SOIC-Narrow package.

DC DC Switching Controllers Feature Summary

• Integrates active clamp control to reduce switch voltage stress and improve efficiency
• Supports both flyback and forward converter topologies
• Enables high-frequency operation up to 1 MHz for compact magnetics

DC DC Switching Controllers Applications

• Offline AC/DC power supply designs
• Flyback converter implementations
• Forward converter architectures

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'D' corresponds to the tape-and-reel packaging variant when ordering. Confirm that the 16-pin SOIC-Narrow package aligns with your PCB footprint requirements. Ensure the operating temperature range of -40°C to +85°C meets your environmental specifications before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high switching frequencies to minimize transformer size. The integrated active clamp feature simplifies design by managing snubber losses. Consider the 16-pin package density if space constraints are critical, and verify compatibility with your target topology between flyback and forward configurations.

DC DC Switching Controllers Part Context

This part belongs to the UCC289x series of current-mode active clamp controllers from Texas Instruments. It shares functional similarities with other members like the UCC2891DR and UCC2892D, differing primarily in packaging and minor electrical characteristics within the same family architecture.

DC DC Switching Controllers Replacement Considerations

The UCC2891DR serves as a direct replacement offering identical functionality in a reel-packaged format. The UCC2892D provides similar active clamp capabilities but may differ in specific thermal or pinout details requiring schematic review.