UCC28251PW

DC DC Switching Controllers Overview

The UCC28251PW is an advanced PWM controller from Texas Instruments designed for AC-DC switching power supplies. It supports multiple topologies including forward, half-bridge, full-bridge, and push-pull configurations. The device operates with a switching frequency range of 40 kHz to 1 MHz and features current/voltage-mode control. It provides two output channels with a maximum duty cycle of 100%. The IC is housed in a 20-TSSOP package and functions within a supply voltage range of 4.7 V to 17 V. It ensures reliable operation across a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Supports multiple converter topologies including forward, half-bridge, full-bridge, and push-pull.
• Features integrated soft-start and programmable frequency control capabilities.
• Provides dual-channel PWM outputs with up to 100% maximum duty cycle.
• Includes built-in protection mechanisms such as over-current limiting.

DC DC Switching Controllers Applications

• AC-DC switched-mode power supplies
• Forward converter designs
• Half-bridge and full-bridge power converters
• Push-pull transformer-coupled applications

DC DC Switching Controllers Procurement Notes

Verify the specific suffix (e.g., PW vs PWR) to confirm the packaging type, as the PW variant typically indicates tube packaging while PWR indicates tape and reel. Ensure the ordering part number matches the required package style for your assembly process. Confirm RoHS compliance status through official manufacturer documentation prior to procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring flexible topology support and high-frequency operation up to 1 MHz. Consider the 20-TSSOP package constraints for PCB layout. Evaluate the need for dual-channel outputs against single-channel alternatives if cost or space is critical. Verify that the input voltage range aligns with the system's startup and operating requirements.

DC DC Switching Controllers Part Context

The UCC28251 belongs to the UCC2825x family of advanced PWM controllers from Texas Instruments. This series is engineered for high-performance power conversion systems. The UCC28251 specifically targets multi-output and isolated converter designs. It complements other devices in the portfolio by offering robust control features for complex power architectures.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Texas Instruments resources for cross-reference data.