UCC2817AD

Overview

The UCC2817AD is a Power Factor Correction (PFC) controller from Texas Instruments, operating in average current mode. It supports switching frequencies ranging from 6 kHz to 220 kHz and requires a supply voltage between 12 V and 17 V. The device features a low start-up current of 150 µA and is housed in a 16-SOIC package with an operating temperature range of -40°C to 85°C.

Feature Summary

• Implements average current mode control for high-performance power factor correction
• Includes integrated zero-power detection circuitry to minimize standby losses
• Features wide input voltage tolerance and low start-up current for efficient system initialization

Applications

• Power supplies requiring active power factor correction
• AC-DC conversion systems
• General-purpose power management circuits

Procurement Notes

Verify the specific suffix 'AD' against official documentation to confirm the SOIC package and industrial temperature rating. Confirm component availability status as older revisions may be discontinued or subject to last-time buy notices. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.

Selection Notes

Select this component when average current mode PFC control is required within the specified frequency range. Consider the 16-SOIC package constraints and the 12 V to 17 V supply requirement. Evaluate if the -40°C to 85°C operating range meets the environmental specifications of the target application compared to other available packages.

Part Context

This part belongs to the UCC2817 family of PFC controllers designed for universal AC input applications. It shares functional similarities with the UCC2817AN but utilizes a surface-mount SOIC package instead of a through-hole DIP configuration. The series is engineered to provide robust performance in standard power factor correction topologies.

Replacement Considerations

Public confirmed substitute: UCC2817D.