UCC28516N

Overview

The UCC28516N 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 supply voltage range of 10.8 V to 15 V, with a nominal input voltage of 12 V. It utilizes current-mode control techniques for the PFC stage and pulse width modulation for the post-regulator. The component is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package, specifically identified as SOP, SOP20,.4, featuring 20 terminals. It is rated for commercial operation and complies with RoHS standards.

Feature Summary

• Integrates advanced PFC and PWM controllers into a single solution for combined power factor correction and post-regulation.
• Employs current-mode control for the PFC stage to enhance dynamic response and stability.
• Includes built-in overvoltage protection (OVP) and enable functionality for system safety and control.

Applications

• High-power-factor pre-regulators
• Combined PFC and post-regulated power supply designs
• Advanced AC-DC converter topologies requiring integrated control

Procurement Notes

Verify the specific suffix 'N' corresponds to the PDIP or SOIC variant intended for your design, as packaging options may vary. Confirm that the 10.8 V to 15 V operating supply range aligns with your system's startup and shutdown thresholds. Ensure thermal management strategies are adequate for the selected package type under maximum load conditions. Cross-reference the latest datasheet for any pinout revisions or mechanical outline changes before finalizing the footprint.

Selection Notes

Select this component when a unified solution for both power factor correction and secondary-side regulation is required to reduce bill of materials count. It is suitable for applications demanding high efficiency and compliance with regulatory standards through integrated OVP. Consider the 20-pin package constraints and ensure sufficient board space for the SOIC or DIP layout. Evaluate the current-mode control characteristics against your specific transient response requirements compared to average current mode alternatives.

Part Context

The UCC28516 belongs to the family of advanced PFC/PWM combination controllers from Texas Instruments, designed to simplify complex power supply architectures. It complements other devices like the UCC28515 by offering integrated control functions. This series targets applications where space savings and reduced component count are critical, providing a robust alternative to discrete PFC and PWM controller combinations.

Replacement Considerations

Public confirmed substitute part numbers: UCC28515