UCC28180D

Overview

The UCC28180D is an 8-pin active power factor correction (PFC) controller operating in continuous conduction mode (CCM). It provides high power factor, low current distortion, and excellent voltage regulation for AC-DC front-end boost pre-regulators. Designed for universal AC input systems ranging from 100 watts to several kilowatts, it supports a programmable switching frequency between 18 kHz and 250 kHz. The device features integrated 1.5A source and 2A sink peak gate drive outputs with internal clamping at 15.2V typical, enabling fast switching without external snubber circuits.

Feature Summary

• Integrated 1.5A source and 2A sink peak gate drive outputs with internal clamping eliminate the need for external buffer circuits.
• Trimmed current loop circuits ensure low total harmonic distortion (iTHD) for high-quality power conversion.
• Audible noise minimization circuitry reduces acoustic emissions during operation.
• Average current-mode control with soft over-current and cycle-by-cycle peak current limit protection enhances system reliability.

Applications

• Universal AC input CCM boost PFC converters in the 100W to few-kW range
• Server and desktop computer power supplies
• Large white goods such as air conditioners and refrigerators
• Industrial DIN rail power supplies
• Flat panel televisions including PDP, LCD, and LED displays

Procurement Notes

Verify the suffix 'D' indicates the SOIC-8 package variant when ordering. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the specific revision level matches design requirements. Cross-reference part numbers carefully to distinguish between tube and reel packaging options available for this component family.

Selection Notes

Select the UCC28180D for applications requiring flexible switching frequencies up to 250 kHz to support both MOSFET and IGBT technologies. The device is suitable for designs needing low iTHD without complex AC line sensing circuits. Consider its wide operating temperature range of -40°C to +125°C for industrial environments. Evaluate the integrated gate drive strength against the specific capacitance of the external power switches to ensure optimal switching performance.

Part Context

The UCC28180 belongs to Texas Instruments' portfolio of critical conduction mode and CCM PFC controllers. It is part of the UCC28180 series, designed to simplify AC-DC power supply designs by integrating essential control loops and protection features into a compact 8-pin package. This series targets high-efficiency power factor correction stages in consumer and industrial electronics.

Replacement Considerations

Consult official substitution guides for compatible alternatives within the UCC28180 family or similar TI PFC controllers. Verify pinout compatibility and electrical parameter alignment before replacing components in existing designs.

FAQ

Does the UCC28180 require external AC line sensing?

No, the UCC28180 is designed as an 8-pin solution that does not require external AC line sensing circuits.

What is the maximum duty cycle capability of the UCC28180?

The device offers a maximum duty cycle of 96% typical, supporting wide input voltage ranges.