UCC2818AQDRQ1

Overview

The UCC2818AQDRQ1 is an automotive-grade BiCMOS power factor preregulator designed for high-efficiency power factor correction. It operates with a fixed switching frequency of 250 kHz and supports a supply voltage range of 12V to 17V. The device functions within an extended temperature range from -40°C to +125°C and is housed in a 16-pin SOIC-Narrow package. Certified under AEC-Q100 standards, it integrates average current mode control to optimize input current shaping and minimize harmonic distortion in automotive power systems.

Feature Summary

• Automotive-grade BiCMOS technology ensures reliability and performance in harsh vehicle environments.
• Integrated average current mode control for precise power factor correction and low harmonic distortion.
• Fixed 250 kHz switching frequency enables compact passive component selection.

Applications

• Automotive power factor correction pre-regulators
• Vehicle auxiliary power supplies
• On-board charger input stages

Procurement Notes

Verify the specific suffix 'QDRQ1' confirms the automotive qualification (AEC-Q100) and tape-and-reel packaging format. Ensure the design environment supports the specified 12V to 17V supply range and the thermal requirements for the SOIC-16 package at up to 125°C ambient operation. Confirm RoHS compliance status matches project specifications.

Selection Notes

Select this component when designing automotive PFC circuits requiring AEC-Q100 certification and BiCMOS performance. It is suitable for applications needing a fixed 250 kHz frequency and average current mode control. Compare against non-automotive variants if vehicle qualification is not required, or consider alternative topologies if wider input voltage ranges are necessary.

Part Context

This part belongs to the UCC2818A series of power factor correction controllers. The 'Q' prefix denotes automotive qualification, while 'D' indicates the SOIC package and 'RQ1' specifies the reel packaging. It is distinct from commercial versions like the UCC2818AD by its extended temperature rating and automotive reliability testing.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified PFC controllers from Texas Instruments such as the UCC28180 series, provided they meet the 250 kHz frequency and SOIC-16 package constraints. Verify pin compatibility and control loop stability before swapping.