UCC28070QPWRQ1

Overview

The UCC28070QPWRQ1 is an automotive-grade, two-phase interleaved continuous conduction mode (CCM) power factor correction (PFC) controller. It integrates two pulse-width modulators operating 180 degrees out of phase to reduce input current ripple and improve efficiency. The device supports a switching frequency of 300 kHz and operates with a supply voltage range of 11V to 21V. It features a maximum duty cycle of 98% and handles a maximum output voltage of 15V. The controller draws 20 mA of input current and dissipates up to 800 mW of power. It is designed for operation in temperatures ranging from -40°C to 125°C and is housed in a TSSOP-20 package.

Feature Summary

• Integrates two PWM controllers operating 180 degrees out of phase for interleaved PFC applications
• Automotive qualified under AEC-Q100 standards for high reliability
• Supports continuous conduction mode (CCM) operation for efficient power factor correction
• Features adjustable switching frequency and high maximum duty cycle capability

Applications

• Automotive power factor correction pre-regulators
• High-power telecom point-of-load solutions
• AC/DC converters requiring reduced line current harmonics

Procurement Notes

Verify the specific suffix 'PW' indicates the TSSOP-20 package variant when ordering. Confirm AEC-Q100 qualification requirements align with your target automotive application. Ensure the design accommodates the specified 11V to 21V supply voltage range and thermal dissipation limits. Cross-reference the datasheet for pinout compatibility if replacing legacy components.

Selection Notes

Select this component for designs requiring dual-phase interleaving to minimize input filter size and current ripple. It is suitable for applications needing robust automotive-grade reliability and CCM operation. Consider the TSSOP-20 footprint constraints and thermal management needs for the 800 mW dissipation rating. Evaluate the 300 kHz switching frequency against EMI requirements.

Part Context

This part belongs to the UCC28070 family of advanced PFC controllers. While the standard UCC28070 serves industrial markets, the Q1 variant is specifically engineered for automotive environments. It shares core functional architecture with other devices in the series but meets stricter automotive quality and temperature standards.

Replacement Considerations

Direct substitutes include the UCC28070DW or UCC28070DWR for non-automotive applications, though they lack AEC-Q100 qualification. For automotive replacements, verify equivalent interleaved CCM controllers with similar voltage and current ratings.

FAQ

What is the operating phase relationship between the internal PWMs?

The two integrated pulse-width modulators operate 180 degrees out of phase to enable interleaved control.

Is this component qualified for automotive use?

Yes, the UCC28070QPWRQ1 is AEC-Q100 qualified for automotive applications.