UCC28513DWR

Overview

The UCC28513DWR is an advanced Power Factor Correction (PFC) and Pulse Width Modulation (PWM) controller IC manufactured by Unitrode, now part of Texas Instruments. It integrates a PFC controller and a PWM controller in a single package to simplify power supply design. The device operates with an average current mode control scheme for the PFC stage and supports switching frequencies up to 200kHz. It features a startup current of 100 µA and requires a supply voltage between 9.7V and 18V. The component is housed in a 20-SOIC package with a width of 7.50mm and is rated for an operating temperature range from -40°C to 105°C.

Feature Summary

• Integrates both PFC and PWM controllers in a single package for simplified design
• Utilizes average current mode control for the power factor correction stage
• Supports switching frequencies up to 200kHz
• Features low startup current consumption

Applications

• Power factor correction circuits
• Pulse width modulation control stages
• Combined PFC/PWM power supply designs

Procurement Notes

Verify the manufacturer designation as Unitrode or Texas Instruments on the datasheet, as ownership transferred. Confirm the package type is 20-SOIC with a 7.50mm width. Ensure the operating temperature range meets your application requirements of -40°C to 105°C. Check for any specific ordering suffixes that might indicate tape and reel packaging versus bulk, although the base model typically denotes bulk. Validate the pinout against the official Texas Instruments datasheet before integration.

Selection Notes

Select this component when a combined PFC and PWM solution is required to reduce board space and component count. It is suitable for applications needing average current mode control for improved line regulation. Consider the 200kHz maximum switching frequency when designing magnetic components. Ensure the input supply voltage stays within the 9.7V to 18V range during operation. Evaluate thermal management needs given the 105°C maximum operating temperature.

Part Context

The UCC28513 belongs to the UCC2851x family of advanced PFC/PWM combination controllers. This family is designed to offer high performance in compact packages. The 'DWR' suffix indicates a 20-SOIC package with a wide body and reel packaging option, though often supplied in bulk. These controllers are widely used in offline power supplies where efficiency and power factor are critical.

Replacement Considerations

Check for direct pin-to-pin replacements within the UCC2851x family, such as other variants in the series. Verify compatibility with existing PCB layouts and control loop compensation networks. Ensure substitute parts support the same 200kHz switching frequency and average current mode control architecture.