UC2855ADW

Overview

The UC2855ADW is a high-performance power factor correction (PFC) pre-regulator controller manufactured by Texas Instruments. It operates within a supply voltage range of 10 V to 20 V and supports switching frequencies up to 500 kHz. The device is housed in a 20-pin SOIC package and functions across an industrial temperature range from -40 °C to +85 °C. Designed for average current mode control, it integrates essential protection features including overvoltage protection and zero-power detection to ensure stable operation in power conversion applications.

Feature Summary

• Integrates average current mode control architecture for precise power factor correction
• Includes built-in overvoltage protection and zero-power detection mechanisms
• Supports high-frequency switching operations up to 500 kHz

Applications

• Power factor correction pre-regulators
• High-performance AC-DC power supplies
• Industrial power management systems

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-20 surface-mount package variant. Confirm RoHS compliance status through official datasheets. Ensure the operating environment remains within the specified -40 °C to +85 °C range. Validate that the 10 V to 20 V supply voltage aligns with system design requirements before procurement.

Selection Notes

Select this component when designing PFC stages requiring average current mode control. It is suitable for applications needing integrated overvoltage protection and zero-power detection. Consider the 20-pin SOIC package for surface-mount assembly constraints. Verify compatibility with switching frequencies up to 500 kHz against system specifications.

Part Context

This part belongs to the UC2855B series of power factor correction controllers. It serves as a specialized solution for improving input power quality in AC-DC conversion systems. The device complements other Texas Instruments PMIC offerings focused on efficient energy management and regulatory compliance in power electronics.

Replacement Considerations

UC2855BDW is a confirmed substitute within the same product family.