UCC28634D

AC DC Converters, Offline Switchers Overview

The UCC28634D is a high-power flyback controller from Texas Instruments featuring primary-side regulation (PSR) and peak power mode. It operates within a temperature range of -40°C to +125°C and utilizes a 7-lead SOIC package. The device integrates internal switches and supports adjustable constant current limits with frequency dithering for noise reduction.

AC DC Converters, Offline Switchers Feature Summary

• Primary-side regulation eliminates the need for optocouplers and secondary-side feedback components.
• Peak power mode operation enhances efficiency across varying load conditions.
• Integrated frequency dithering reduces electromagnetic interference (EMI) emissions.

AC DC Converters, Offline Switchers Applications

• High-power offline AC/DC converters
• Flyback power supply designs requiring isolated outputs
• Systems utilizing primary-side regulation for cost optimization

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-7 package variant. Confirm RoHS compliance status through official documentation. Ensure the operating temperature range meets system requirements. Check for active production status and availability of updated datasheets before finalizing procurement decisions.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications demanding high efficiency in flyback topologies without secondary feedback loops. The integrated internal switch simplifies design complexity. Consider the thermal performance within the specified junction temperature range when designing heat dissipation strategies for high-power implementations.

AC DC Converters, Offline Switchers Part Context

This part belongs to the UCC28xxx series of power management ICs from Texas Instruments. It is categorized under AC/DC converters and offline switchers. The device is designed to replace older solutions requiring complex secondary-side regulation circuits, offering a streamlined approach to high-power conversion.

AC DC Converters, Offline Switchers Replacement Considerations

No public confirmed substitute part numbers are available in the provided data. Verify compatibility with existing PCB footprints and control loop requirements if considering alternative controllers from other manufacturers.

AC DC Converters, Offline Switchers FAQ

Does the UCC28634D include an internal switch?

Yes, the UCC28634D features an integrated internal switch as part of its high-power flyback controller design.

What is the maximum operating junction temperature?

The maximum operating junction temperature for the UCC28634D is 125°C.