UCC28503DW

Overview

The UCC28503DW is a Power Factor Correction (PFC) and PWM combination controller manufactured by Texas Instruments. It utilizes BiCMOS technology to integrate both PFC and PWM control functions into a single component. The device operates within a switching frequency range of 200 kHz and supports an operating supply current of 150 µA. It is housed in a 20-pin SOIC package designed for surface mount installation. The operational temperature range spans from -40°C to +85°C, ensuring reliability across various industrial environments.

Feature Summary

• Integrates average current mode PFC control with advanced PWM regulation in a single IC
• Features cycle-by-cycle peak current limiting for robust protection against overcurrent conditions
• Includes programmable soft-start functionality to manage inrush currents during startup

Applications

• High-performance power factor correction pre-regulators
• Universal input AC-DC power supplies
• Computer and telecom power systems

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tube packaging configuration. Ensure compatibility with RoHS standards if required by your manufacturing process. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and traceability before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring integrated PFC and PWM control to reduce bill of materials count. Consider the 200 kHz switching frequency and 150 µA supply current for efficiency optimization. Evaluate the thermal performance within the specified -40°C to +85°C range to ensure adequate heat dissipation for the target application environment.

Part Context

This device belongs to the UCC28503 series of advanced PFC/PWM combination controllers. It is designed to simplify the design of high-efficiency power supplies by combining two critical control loops into one package. The series targets applications demanding high power density and compliance with regulatory standards for harmonic distortion.

Replacement Considerations

Consult official documentation for direct pin-to-pin replacements or functional equivalents within the same product family.