UCC38502DWTR

Overview

The UCC38502DWTR is a BiCMOS 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-performance power factor correction preregulators. The device operates within an industrial temperature range of 0 to 70 degrees Celsius and is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package.

Feature Summary

• Integrates average current mode PFC control with a PWM controller for combined power factor correction and voltage regulation.
• Utilizes BiCMOS technology to achieve high performance and efficiency in power conversion applications.
• Supports synchronous rectification control for improved system efficiency.

Applications

• Power factor correction preregulators
• High-efficiency AC-DC power supplies
• Server and telecom power systems

Procurement Notes

Verify the specific suffix TR indicates tape and reel packaging when sourcing. Confirm the component matches the original manufacturer's specifications for pinout and electrical characteristics. Ensure compatibility with the intended thermal management solution for the SOIC-20 package. Check for any lead-free or RoHS compliance markings if required by regulatory standards.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control to reduce bill of materials count. Consider the 20-SOIC package size for board space constraints. Evaluate the thermal performance requirements for the operating environment. Verify that the input voltage range and switching frequency capabilities align with the target power supply design specifications.

Part Context

This part belongs to the UCC3850x family of combination controllers from Texas Instruments. These devices are engineered to simplify the design of high-power-factor AC-DC converters by combining two control loops into one IC. The DWTR variant specifically denotes the surface-mount SOIC package with tape-and-reel delivery format.

Replacement Considerations

Direct substitutes include UCC38502DW and UCC38502DWG4. Cross-reference pinouts and electrical parameters before substitution. Verify package compatibility and thermal characteristics for equivalent performance.