UCC28513DW

Overview

The UCC28513DW is a PFC/PWM combination controller from Texas Instruments designed for offline power systems. It operates in a 20-SOIC package with an operating temperature range of -40°C to 105°C. The device features VCC UVLO thresholds of 10.2V/9.7V and PWM UVLO thresholds of 6.75V/3.55V. It maintains a 1:1 frequency ratio between the PFC and PWM stages, with a switching frequency of 200kHz or 230kHz depending on specific configuration.

Feature Summary

• Provides complete control functionality for offline power systems requiring harmonic compliance
• Integrates Power Factor Correction and Pulse Width Modulation controllers in a single device
• Features defined under-voltage lockout thresholds for both VCC and PWM sections

Applications

• Offline power systems requiring IEC61000-3-2 harmonic current limit compliance
• AC-DC power supplies utilizing average current mode control
• Power factor correction applications integrated with downstream DC-DC conversion

Procurement Notes

Verify the exact switching frequency specification (200kHz vs 230kHz) against the latest official datasheet, as sources vary. Confirm the package suffix 'DW' corresponds to the standard SOIC-20 tube packaging rather than the taped and reeled variant which requires an 'R' suffix. Ensure the component meets RoHS3 standards if required by your manufacturing process.

Selection Notes

Select this component when a combined PFC and PWM solution is needed to reduce bill of materials count. It is suitable for designs targeting IEC61000-3-2 standards without external harmonic filtering complexity. Consider the wide operating temperature range for industrial environments. Verify that the 1:1 frequency ratio aligns with your electromagnetic interference management strategy.

Part Context

This part belongs to the UCC285xx series of advanced PFC/PWM combination controllers. These devices are engineered to simplify the design of high-performance AC-DC converters. The DW designation indicates a plastic small-outline package with a width of 7.50mm. The series supports average current mode control for improved line regulation and transient response.

Replacement Considerations

Public confirmed substitutes include the UCC28512DWR. Note that the UCC28515DW is listed as obsolete with the UCC28512DWR recommended as an alternative. Verify pin compatibility and electrical specifications before substitution.