UCC28516DWR

Overview

The UCC28516DWR is an advanced Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combination controller manufactured by Texas Instruments. It integrates a PFC controller with a post-regulator PWM controller in a single package, designed for high-efficiency power supplies. The device operates within a temperature range of -40°C to +105°C and is housed in a 20-pin SOIC package. Key electrical characteristics include a maximum practical operating frequency of 0.5 MHz, peak output sink current of 3 A, and peak output source current of -2 A for gate drive applications.

Feature Summary

• Integrates both PFC and PWM control functions into a single component
• Supports average current mode control for the PFC stage
• Includes dedicated post-regulator capabilities for enhanced voltage regulation

Applications

• High-efficiency AC-DC power adapters
• Server and workstation power supplies
• Telecommunications power systems

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging variant when ordering. Confirm that the obsolete status does not impact long-term supply chain requirements for your design. Ensure compatibility with existing PCB footprints for the 20-SOIC package before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control to reduce bill of materials count. Consider the 0.5 MHz switching frequency limit when designing magnetics. Verify thermal management strategies for the SOIC package given the operational temperature range up to 105°C.

Part Context

This part belongs to Texas Instruments' family of advanced PFC/PWM combination controllers. It serves as a successor or alternative to discrete PFC and PWM controller solutions, simplifying design complexity. The DWR suffix indicates a specific reel-based packaging option suitable for automated assembly processes.

Replacement Considerations

The UCC28517DWR is a documented substitute within the same product family. Both devices share similar integration levels and control architectures. Verify pin-to-pin compatibility and parameter alignment before swapping components in existing designs.