UCC28056DBVR

Overview

The UCC28056CDBVR is a six-pin high-performance Power Factor Correction (PFC) controller from Texas Instruments, housed in an SOT-23-6 package. It operates within a temperature range of -40°C to +125°C and draws a supply current of 46 µA. The device supports SMD/SMT installation and functions as a CRM/DCM PFC controller. It is part of the UCC28056 series under PMIC classification.

Feature Summary

• Implements a hybrid mode approach transitioning from Transition Mode at full load to Discontinuous Conduction Mode at lighter loads to automatically reduce switching frequency.
• Includes burst mode operation that maintains the PFC active without shutdown, enabling compliance with strict energy standards such as EuP Lot 6 Level 2 and CoC Version 5 Level 2.
• Features instant-on capability to minimize external component count and eliminates the need for a secondary winding on the boost inductor for valley sync turn-on.

Applications

• Desktop computers
• Digital televisions
• Game consoles
• Set-top boxes
• Entry-level servers and network servers

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging when ordering. Confirm the complete part number matches the required pinout and thermal specifications for the target PCB layout. Ensure compatibility with the intended input voltage range and load requirements before finalizing procurement decisions.

Selection Notes

Select this controller for designs requiring high efficiency across varying load conditions without disabling the PFC stage. It is suitable for applications needing low audible noise and enhanced error amplifier response. Consider pairing with LLC controllers like the UCC256301 for systems requiring auxiliary power generation without additional flyback converters.

Part Context

This component belongs to the UCC28056 family of power factor correction controllers. It is designed to drive PFC power stages up to 300W while maintaining sine wave input currents and low distortion. The device integrates protection features including over-temperature and independent output voltage protection.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.