UCC28515DW

Overview

The UCC28515DW is an advanced Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combination controller manufactured by Texas Instruments. It integrates average current mode PFC control with a PWM controller in a single package, designed for high-efficiency AC-DC power supplies. The device operates within a supply voltage range of 9.7V to 18V and supports switching frequencies up to 0.5 MHz. It features a 20-SOIC package and functions reliably across an extended temperature range from -40°C to 105°C. Key electrical parameters include a UVLO threshold of 10.2V/9.7V, a startup current of 0.1 mA, and gate drive peak output sink/source currents of 3A/-2A.

Feature Summary

• Integrates average current mode PFC control with a dedicated PWM controller for combined power factor correction and regulation.
• Provides robust under-voltage lockout thresholds to ensure stable operation during power-up and shutdown sequences.
• Features high-current gate drive capabilities to efficiently drive external power switches.

Applications

• High-performance AC-DC power supplies requiring simultaneous power factor correction and voltage regulation
• Computer and peripheral power adapters
• Industrial power conversion systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to the part's end-of-life status. Confirm that the specific suffix corresponds to the 20-SOIC package variant. Request official documentation to validate compliance with RoHS3 standards and check for any product change notices affecting pinout or functionality before integration into new designs.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control to reduce bill of materials count. Ensure the application supports continuous conduction mode (CCM) operation as specified. Verify that the thermal environment remains within the -40°C to 105°C operating range. Consider the 20-SOIC footprint constraints and verify compatibility with existing PCB layouts and gate drive requirements.

Part Context

The UCC28515 belongs to Texas Instruments' family of advanced combination controllers, bridging the gap between separate PFC and PWM stages. It simplifies design complexity by consolidating control loops. The DW suffix denotes the 20-pin Small Outline Integrated Circuit (SOIC) package with a width of 7.50mm. This series targets applications demanding high efficiency and compact form factors in power management solutions.

Replacement Considerations

• UCC28512DWR

FAQ

What control method does the UCC28515 support?

The device supports Continuous Conduction Mode (CCM) for the PFC stage and average current mode control.

Is the UCC28515 currently in production?

No, the UCC28515DW is classified as obsolete and no longer manufactured by Texas Instruments.