UCC28515N

Overview

The UCC28515N is an advanced Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combination controller manufactured by Texas Instruments. It integrates both PFC and PWM control functions into a single device to simplify power supply design. The component operates within a practical maximum frequency of 0.5 MHz and supports Continuous Conduction Mode (CCM). It features an operating supply voltage range up to 18 V with UVLO thresholds set at 10.2 V for turn-on and 9.7 V for turn-off. The device is rated for catalog quality and functions across an operating temperature range from -40°C to 105°C.

Feature Summary

• Integrates average current mode PFC and PWM controllers in a single package
• Includes overvoltage protection (OVP) functionality
• Features an enable pin for system power management

Applications

• High-efficiency offline power supplies
• Power factor correction pre-regulators
• Combined AC-DC conversion systems

Procurement Notes

Verify the specific suffix 'N' indicates the PDIP package variant when ordering, as the standard datasheet often references SOIC packages. Confirm that the required operating temperature range aligns with the specified -40°C to 105°C limit. Ensure the application circuit supports the CCM control method and the maximum switching frequency of 0.5 MHz. Check for any recent product discontinuance notifications or alternative package availability from the manufacturer.

Selection Notes

Select this component when a single-chip solution for both PFC and PWM stages is required to reduce board space and component count. It is suitable for designs needing average current mode control for improved line regulation. Consider the 18 V maximum supply rating and the specific UVLO thresholds during input stage design. Verify compatibility with the target topology and output requirements against the integrated gate drive capabilities.

Part Context

The UCC28515 belongs to the family of advanced combination controllers designed to streamline power supply architectures. It consolidates functions typically requiring separate PFC and PWM ICs. This integration helps minimize external components and simplifies layout constraints. The device targets applications where high efficiency and compact form factors are critical design drivers.

Replacement Considerations

Publicly confirmed substitute part numbers for the UCC28515N are not available in the provided documentation. Designers should consult official Texas Instruments resources for potential cross-references or updated component recommendations.