UCC28061QDRQ1

Overview

The UCC28061QDRQ1 is an automotive-grade, dual-channel Natural Interleaving Transition-Mode Power Factor Correction (PFC) controller manufactured by Texas Instruments. Designed for high-efficiency power supplies ranging from 100W to 800W, it utilizes a sensorless current shaping technique to simplify layout and enhance performance. The device operates within a supply voltage range of 14V to 21V and supports switching frequencies up to 500kHz. It features a 16-pin SOIC package and functions reliably across an extended temperature range of -40°C to +125°C.

Feature Summary

• Natural Interleaving technology synchronizes two channels as masters without slave channels, ensuring inherent strong matching and rapid response while maintaining transition-mode operation.
• Sensorless current shaping eliminates the need for external current sensors, simplifying printed circuit board layout and improving overall system efficiency.
• FailSafe overvoltage protection prevents catastrophic output overvoltage conditions caused by voltage sensing faults or short circuits to intermediate voltages.
• Integrated surge-safe current limiting protects MOSFETs during inrush events and eliminates reverse recovery issues in output rectifiers.

Applications

• Automotive infotainment and display systems requiring AEC-Q100 compliance
• High-efficiency AC/DC adapters for consumer electronics
• Power supplies for LCD, plasma, and DLP televisions
• Set-top boxes and digital-to-analog converters

Procurement Notes

Verify that the specific suffix QDRQ1 confirms AEC-Q100 automotive qualification status. Confirm the SOIC-16 package dimensions match your PCB footprint requirements. Ensure the design accounts for the specified operating supply voltage range of 14V to 21V. Validate thermal management strategies for the -40°C to +125°C operating environment. Cross-reference the datasheet revision date to ensure compatibility with latest design guidelines.

Selection Notes

Select this component when designing interleaved PFC stages for automotive applications where audible noise immunity and high efficiency are critical. It is suitable for replacing single-phase CCM controllers to reduce EMI filter size and capacitor count. Consider its sensorless architecture if minimizing bill-of-materials complexity is a priority. Evaluate its surge-safe current limiting capabilities against standard inrush protection methods.

Part Context

This device belongs to the UCC2806x family of Natural Interleaving Transition-Mode PFC controllers. It shares architectural similarities with the UCC28061 but includes specific automotive qualification markings indicated by the 'Q' prefix. The DRQ1 suffix denotes the tape-and-reel packaging format in a narrow SOIC package. It complements other TI PMIC solutions for complete power management systems.

Replacement Considerations

The UCC28061DR serves as the commercial-grade equivalent. Verify pinout compatibility before substitution. Automotive designs must retain the QDRQ1 variant for reliability standards. Check if non-interleaved alternatives meet the specific efficiency targets required by the application.

FAQ

How does the Natural Interleaving feature differ from traditional interleaved PFC?

Unlike traditional designs using master-slave configurations, Natural Interleaving operates both channels as masters synchronized to the same frequency, providing inherent phase matching and faster transient response.

What protection mechanisms are included in the UCC28061QDRQ1?

It includes input undervoltage lockout, output overvoltage protection with FailSafe capability, open-loop detection, overload protection, soft-start, phase fault detection, and thermal shutdown.

Can this controller operate without current sense transformers?

Yes, it utilizes a sensorless current shaping technique that eliminates the need for external current sensors, thereby reducing component count and simplifying the circuit layout.