UCC28511N

Overview

The UCC28511N is a power factor correction controller manufactured by Texas Instruments, designed for high-performance AC/DC conversion applications. It operates in continuous conduction mode (CCM) to enhance efficiency and reduce harmonic distortion. The device features an average current control architecture with integrated soft-start capabilities. It supports a wide operating frequency range and includes protection mechanisms such as overvoltage lockout. Packaged in a 20-pin DIP format, it is suitable for through-hole mounting in industrial and commercial power supplies requiring robust PFC performance.

Feature Summary

• Implements average current mode control for precise regulation and low harmonic content
• Integrates soft-start functionality to manage inrush current during power-up sequences
• Provides comprehensive protection features including overvoltage lockout thresholds

Applications

• High-power-factor pre-regulators for AC/DC power supplies
• Industrial equipment power management systems
• Commercial server and telecommunications power units

Procurement Notes

Verify the specific suffix 'N' indicates the PDIP-20 package variant when sourcing replacements. Confirm that the component meets RoHS compliance standards required for your assembly process. Check for obsolescence notices or lifecycle status updates from Texas Instruments prior to finalizing procurement plans to ensure long-term supply stability.

Selection Notes

Select this component for designs requiring CCM PFC operation with average current control. Ensure the application voltage and current ratings align with the controller's specifications. Consider thermal management requirements due to the through-hole packaging. Evaluate compatibility with external MOSFETs and passive components for the intended power level and switching frequency.

Part Context

This part belongs to the UCC285xx series of power factor correction controllers from Texas Instruments. It complements other models like the UCC28515 and UC3852, offering similar control architectures but with distinct pinouts and feature sets tailored for different power stages. The series focuses on improving power quality and meeting regulatory standards for electromagnetic interference.

Replacement Considerations

UC28511N