UCC2817PW

Overview

The UCC2817PW is a BiCMOS power factor preregulator controller manufactured by Texas Instruments. It operates within a supply voltage range of 12 V to 17 V and supports switching frequencies from 6 kHz to 250 kHz. The device is housed in a 16-pin TSSOP package and functions with an average current mode control architecture. It features a low startup current of 150 µA and is designed for operation across a temperature range of -40°C to +85°C.

Feature Summary

• Implements average current mode control for power factor correction applications
• Integrates zero-power detection capability for enhanced efficiency at light loads
• Utilizes BiCMOS technology to combine high-voltage processing with low-power logic

Applications

• Power factor correction preregulators
• AC-DC power supplies
• Average current mode PFC controllers

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-16 package configuration when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors, as environmental declarations may vary by production batch. Ensure the component meets the required operating temperature range specifications for the intended application environment.

Selection Notes

Select this component for designs requiring average current mode PFC control with a wide frequency adjustment range up to 250 kHz. It is suitable for applications needing low startup current consumption and integrated zero-power detection. Consider the TSSOP-16 package constraints and the 12 V to 17 V supply voltage requirements during circuit design.

Part Context

The UCC2817 belongs to the UCC2817/18 family of BiCMOS power factor preregulators. This series is engineered to provide high-performance power factor correction with reduced component count. The device integrates essential control loops and protection features typically found in discrete solutions, simplifying the design of efficient AC-DC conversion systems.

Replacement Considerations

The UCC2817DG4 is a verified lead-free variant of the UCC2817 series. Verify pin compatibility and electrical specifications before substitution. Consult official datasheets to confirm functional equivalence regarding control modes and package dimensions.