UCC28512DW

Overview

The UCC28512DW is an advanced PFC/PWM combination controller from Texas Instruments, designed for high-performance power factor correction and pulse width modulation in a single integrated circuit. It operates within a supply voltage range of 9.7V to 18V and supports switching frequencies between 80kHz and 120kHz. The device features specific undervoltage lockout thresholds, including 16V/9.7V for VCC and 6.75V/3.55V for PWM functions. It maintains a 1:1 frequency ratio between stages and is housed in a 20-SOIC package with an operating temperature range of -40°C to 105°C.

Feature Summary

• Integrates both Power Factor Correction and Pulse Width Modulation control functions into a single controller unit.
• Provides distinct undervoltage lockout thresholds for VCC and PWM sections to ensure stable startup and operation.
• Maintains a fixed 1:1 frequency ratio between the PFC and PWM stages for synchronized control.

Applications

• High-efficiency power factor correction systems
• Average current mode controlled power supplies
• Advanced AC-DC conversion architectures

Procurement Notes

Verify the exact suffix (e.g., DW vs DWR) against the Bill of Materials, as packaging and reel specifications differ. Confirm the manufacturer source is Texas Instruments directly or an authorized distributor to avoid counterfeit components. Check RoHS compliance status if required by environmental regulations. Ensure the SOIC-20 footprint matches the PCB design constraints before finalizing procurement orders.

Selection Notes

Select this component when a unified solution for both PFC and PWM control is required to reduce board space and component count. It is suitable for designs needing average current mode control with specific UVLO requirements. Consider the 20-SOIC package size and thermal characteristics during layout planning. Verify that the input voltage range and switching frequency capabilities align with the target power supply specifications.

Part Context

This part belongs to the UCC28500 series of advanced PFC/PWM combination controllers. It shares functional similarities with other members like the UCC28500 but offers specific parameter variations. The series is designed for applications requiring tight integration of power management stages. It represents a specialized class of mixed-signal ICs for efficient energy conversion.

Replacement Considerations

The UCC28512DWR is listed as a manufacturer-recommended alternative, differing primarily in packaging format. Verify pin compatibility and electrical parameters before substitution. No other direct cross-model replacements are confirmed in available documentation.