UCC28056BDBVR

Overview

The UCC28056BDBVR is a six-pin power factor correction controller from Texas Instruments, housed in an SOT-23-6 surface-mount package. It operates within a temperature range of -40°C to +125°C and draws a working supply current of 46 µA. The device supports a wide V_CC range from 8.5V to 34V and features integrated over-temperature protection with burst mode capabilities for soft entry and exit.

Feature Summary

• Implements a hybrid control method transitioning between transition mode at full load and discontinuous conduction mode at lighter loads to automatically reduce switching frequency.
• Maintains continuous PFC operation via burst mode without disabling the converter, ensuring compliance with strict energy efficiency standards such as EuP Lot 6 and DOE Level VI.
• Provides low input current distortion and near-unity power factor down to 10% load, while minimizing audible noise through valley synchronization without requiring secondary windings on the boost inductor.

Applications

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

Procurement Notes

Verify the specific suffix 'BDBVR' against the manufacturer's official documentation to confirm the exact reel quantity and tape specifications. Ensure that the ordering information matches the required packaging format, such as cut tape or reel, as indicated in the component datasheet. Cross-reference the date code and lot number to ensure compatibility with current production revisions.

Selection Notes

Select this component for designs requiring high efficiency across varying load conditions without auxiliary converters. It is suitable for applications needing low standby power consumption and minimal external component count due to instant-on functionality. Consider the SOT-23-6 package constraints for thermal management and PCB layout requirements in compact form factors.

Part Context

This part belongs to the UCC28056 series of high-performance PFC controllers designed for AC/DC power supplies. It complements other Texas Instruments solutions like the UCC256301 LLC controller to enable efficient multi-stage power conversion architectures. The series targets modern consumer electronics and IT equipment demanding stringent regulatory compliance.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if any direct pin-to-pin replacements exist through official Texas Instruments change notices or engineering bulletins before considering alternative sourcing options.