UCC28517N

Overview

The UCC28517N is an advanced Power Factor Correction (PFC) and Pulse Width Modulation (PWM) combination controller manufactured by Texas Instruments. Designed for high-efficiency power conversion, it integrates both PFC and PWM control functions into a single integrated circuit. The device operates within a temperature range of -40°C to +105°C and utilizes a 16-pin PDIP package. It supports continuous conduction mode (CCM) operation and features average current mode control for the PFC stage alongside pulse width modulation for the post-regulator.

Feature Summary

• Integrates PFC and PWM controllers in a single IC
• Supports CCM operation with average current mode control
• Includes built-in post-regulator functionality

Applications

• High-efficiency AC-DC power supplies
• Power factor correction pre-regulators
• Bias supply converters

Procurement Notes

Verify the specific suffix 'N' indicates the PDIP package variant when ordering. Confirm RoHS compliance status through official manufacturer documentation. Ensure the operating temperature range meets system requirements. Check for any recent product discontinuance notifications or process change notices from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component for designs requiring integrated PFC and PWM control to reduce bill of materials count. Consider the PDIP package for through-hole mounting applications. Evaluate thermal management needs given the extended operating temperature range. Compare against standalone PFC controllers if separate regulation stages are preferred for complex topologies.

Part Context

This part belongs to the UCC2851x family of advanced PFC/PWM combination controllers. It shares functional similarities with other members like the UCC28515 but differs in packaging and specific pinout configurations. The family targets high-performance power conversion applications requiring tight integration of power factor correction and voltage regulation.

Replacement Considerations

Direct substitutes include other UCC2851x series variants such as UCC28515DWR, provided pin compatibility and package differences are addressed. Verify electrical specifications match application requirements before substitution.