UCC28514N

Overview

The UCC28514N is an advanced power factor correction and pulse-width modulation combination controller manufactured by Texas Instruments. Designed for high-performance pre-regulator applications, it integrates a PFC controller with a post-regulator PWM controller in a single package. The device operates at a maximum switching frequency of 240 kHz and supports current-mode control architectures. It is housed in a 20-pin PDIP package and functions within a temperature range of -40°C to +85°C. The component utilizes BICMOS technology to deliver efficient power management with a peak current capability of 3.5 A.

Feature Summary

• Integrates both power factor correction and PWM control functions into a single integrated circuit
• Supports current-mode control architecture for precise regulation
• Includes a dedicated post-regulator stage for enhanced output stability

Applications

• High-power-factor pre-regulators
• Advanced AC-DC power supply designs
• Industrial power conversion systems

Procurement Notes

Verify the specific ordering suffix to ensure the correct package type and temperature rating are selected. Confirm that the procurement channel provides genuine Texas Instruments components to avoid counterfeit risks. Check for any recent product discontinuance notifications or process change notifications that may affect long-term availability or manufacturing parameters before finalizing purchase orders.

Selection Notes

Select this component when a combined PFC and PWM solution is required to reduce board space and design complexity. Ensure the application demands a switching frequency up to 240 kHz and can accommodate the 20-pin PDIP footprint. Verify that the input voltage and load current requirements align with the device's operational limits and thermal dissipation capabilities for reliable performance.

Part Context

The UCC28514N belongs to the UC3852 family of power factor controllers, representing an evolution in integrated power management solutions. It combines the functionality of separate PFC and PWM controllers into one unit, simplifying the design of high-efficiency power supplies. This integration helps minimize component count and improves overall system reliability compared to discrete implementations.

Replacement Considerations

UC3852N

FAQ

What is the maximum switching frequency of the UCC28514N?

The maximum switching frequency is 240 kHz.

Does the UCC28514N include a post-regulator?

Yes, the device includes a post-regulator stage as part of its integrated PFC/PWM combination controller design.