UCC28051D

Overview

The UCC28051D is a transition mode power factor correction controller from Texas Instruments, designed for low to medium power applications requiring compliance with IEC 61000-3-2 harmonic standards. It operates at a switching frequency of 200 kHz and features an 8-SOIC package. The device supports a supply voltage range of 12V to 18V and functions within an operating temperature range of -40°C to 105°C. Key electrical parameters include a startup current of 75 µA and a peak gate drive current capability.

Feature Summary

• Operates in transition mode (boundary conduction mode) for improved efficiency and reduced implementation costs
• Integrates zero-current detection to prevent overvoltage protection during light load conditions
• Includes a transconductance voltage error amplifier and simple multiplier for precise output regulation
• Features robust protection mechanisms including peak current limiting, overvoltage protection, and enable circuitry

Applications

• Offline AC-to-DC voltage converters with power factor correction
• Boost pre-regulators for universal line input ranges
• Power supplies requiring compliance with IEC 61000-3-2 harmonic reduction standards

Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and tape-and-reel quantity match your assembly requirements. Confirm that the component meets all necessary environmental certifications for your target market. Cross-reference the manufacturer part number with official datasheets to validate pinout compatibility before integration into existing designs.

Selection Notes

Select this component for applications necessitating transition mode PFC control with high reliability. Consider its integrated zero-current detection and soft-start features for systems requiring stable operation under varying load conditions. Ensure the design accommodates the specified operating temperature range and supply voltage constraints for optimal performance.

Part Context

The UCC28051D belongs to the UCC2805x family of transition mode PFC controllers. It shares architectural similarities with the UCC38051 but offers an extended industrial temperature range suitable for harsher environments. This series is engineered to provide industry-standard pin compatibility while enhancing functional capabilities for modern power conversion needs.

Replacement Considerations

The UCC38051 serves as a related alternative within the same product family, offering similar functionality but with a commercial temperature range specification instead of the industrial range found in the UCC28051D.