UCC28070APW

Overview

The UCC28070APW is a two-phase interleaved continuous conduction mode (CCM) power factor correction controller manufactured by Texas Instruments. It integrates two pulse width modulators operating 180 degrees out of phase to reduce input and output ripple currents. The device supports an extended switching frequency range from 10 kHz to 300 kHz, making it suitable for applications using IGBT power switches. It features inherent current matching, advanced current synthesizer sensing, and a highly linear multiplier with internal quantized voltage feed-forward correction. The component operates within a supply voltage range of 11 V to 21 V, dissipates up to 800 mW, and functions between -40°C and +125°C. It is housed in a 20-pin TSSOP package.

Feature Summary

• Interleaved average current-mode PWM control with inherent current matching
• Advanced current synthesizer current sensing for superior efficiency
• Highly-linear multiplier output with internal quantized voltage feed-forward correction
• Extended range programmable frequency capability down to 10 kHz

Applications

• Air conditioners and white goods control
• PFC applications with IGBT power switches
• High-efficiency server and desktop power supplies
• Telecom rectifiers
• Industrial equipment requiring near-unity power factor

Procurement Notes

Verify the specific suffix 'PW' indicates the tube packaging variant rather than the tape and reel option. Confirm the extended frequency range specification aligns with system requirements, as this distinguishes the APW model from standard variants. Ensure compatibility with the UCC28070EVM development kit if prototyping. Check RoHS compliance status on the official datasheet before finalizing procurement orders.

Selection Notes

Select the UCC28070APW when operation below 30 kHz is required, specifically for designs utilizing IGBTs. The extended low-frequency range differentiates this part from the standard UCC28070. Consider the TSSOP-20 package constraints for thermal management given the 800 mW dissipation rating. Evaluate the need for external clock synchronization or frequency dithering features based on EMI constraints.

Part Context

The UCC28070APW belongs to the UCC28070 family of power factor correction controllers. It serves as an extended frequency derivative of the original UCC28070, retaining all core interleaving and current-mode control features while lowering the minimum operating frequency. This family is designed for high-performance PFC stages in various industrial and consumer electronics applications.

Replacement Considerations

The UCC28070APWR is the identical functional equivalent packaged in tape and reel instead of tubes. The UCC28070DW offers the same electrical performance in a SOIC-20 package. Standard UCC28070 variants are compatible but lack the extended 10 kHz lower frequency limit.