UCC28070DW

Overview

The UCC28070DW is a two-phase interleaved continuous conduction mode (CCM) power factor correction controller manufactured by Texas Instruments. It integrates dual PWMs operating at 180 degrees out of phase to minimize input and output ripple currents, simplifying EMI filtering requirements. The device supports a switching frequency range from 30 kHz to 300 kHz with programmable jitter for enhanced EMI performance. It operates within a supply voltage range of 11.2V to 21V and functions reliably across an industrial temperature range of -40°C to +125°C. Packaged in a 20-pin SOIC format, it features advanced current sensing and protection mechanisms.

Feature Summary

• Interleaved average current mode control with inherent current matching between phases
• Advanced current synthesizer sensing architecture for superior efficiency
• High-linearity multiplier output with internal quantized voltage feedforward correction
• Programmable frequency jitter and external clock synchronization capabilities

Applications

• Telecommunications power supplies
• Server point-of-load solutions
• Industrial system power management

Procurement Notes

Verify the specific suffix against official documentation to confirm package type and temperature rating. The DW suffix indicates a SOIC-20 package. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure ordering quantities align with manufacturer tube packaging standards. Cross-reference datasheet revisions to validate feature availability.

Selection Notes

Select this component for designs requiring high-efficiency PFC in the 75W to 1kW range. The interleaved topology reduces thermal stress and allows for smaller passive components. Consider the SOIC-20 package constraints for PCB layout. Evaluate the need for programmable jitter if strict EMI limits are required. Verify compatibility with universal AC line inputs.

Part Context

The UCC28070 series represents Texas Instruments' solution for high-performance power factor correction. It addresses energy management demands in commercial and industrial sectors by improving power quality and reducing waste. The device builds on extensive PFC development experience, offering a single-chip solution that simplifies design while enhancing system reliability and efficiency metrics.

Replacement Considerations

UCC28070DWR: Tape and reel version of the same SOIC-20 device. UCC28070PW: TSSOP-20 package variant. UCC28070APWR: Extended frequency range variant (10kHz to 300kHz) in TSSOP-20.