UCC28070DWR

Overview

The UCC28070DWR is a two-phase interleaved continuous conduction mode (CCM) power factor correction controller manufactured by Texas Instruments. It integrates two pulse width modulators operating in anti-phase to reduce input and output ripple currents, simplifying EMI filtering. The device supports a programmable switching frequency range from 30 kHz to 300 kHz and features frequency jitter for enhanced electromagnetic interference reduction. It operates within a supply voltage range of 11.2 V to 21 V and functions reliably across an extended temperature range of -40°C to +125°C. Packaged in a 20-pin SOIC format, it includes advanced protection mechanisms such as UVLO, overvoltage protection, and open-loop detection.

Feature Summary

• Integrates two PWM controllers operating in anti-phase to significantly reduce input and output ripple currents
• Features a high-linearity multiplier with internal quantized voltage feedforward correction for consistent power factor performance
• Supports external clock synchronization and programmable frequency jitter rates to enhance electromagnetic interference suppression
• Includes comprehensive protection features such as bias supply under-voltage lockout, overvoltage protection, and open-loop detection

Applications

• High-efficiency power factor correction stages in server and data center power supplies
• Telecommunications point-of-load solutions requiring low electromagnetic interference
• Industrial power systems utilizing interleaved CCM topologies

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging configuration when sourcing components. Confirm that the required operating temperature range aligns with the specified industrial limits. Ensure compatibility with the UCC28070EVM development kit for initial design validation. Cross-reference pin assignments against the official datasheet to prevent integration errors during PCB layout.

Selection Notes

Select this component for designs requiring precise current matching between phases without external calibration. The integrated current synthesizer improves efficiency compared to traditional sensing methods. Consider the programmable frequency range if system constraints demand operation outside standard ranges. Evaluate the need for external clock synchronization based on system timing requirements.

Part Context

This part belongs to the UCC28070 family of power management ICs designed for advanced power factor correction applications. It serves as a specialized controller for interleaved topologies, distinguishing itself from single-phase alternatives through its dual-PWM architecture. The device is categorized under PMIC solutions for efficient energy conversion in demanding electronic environments.

Replacement Considerations

Public confirmed substitute part numbers include UCC28070DW and UCC28070PW. Verify package compatibility and thermal characteristics when transitioning between SOIC and TSSOP variants.