UCC2818MDREP

Overview

The UCC2818MDREP is a BiCMOS power factor preregulator controller from Texas Instruments, designed for average current-mode control in continuous conduction mode (CCM) boost PFC applications. It operates with a programmable switching frequency ranging from 6 kHz to 220 kHz and supports a supply voltage of 12 V to 17 V. The device features a low start-up current of 150 µA and is housed in a 16-SOIC package. It is engineered to provide high power factor and low total harmonic distortion for AC-DC front-end systems.

Feature Summary

• Implements average current-mode control architecture for precise regulation
• Features integrated audible noise minimization circuitry
• Includes soft over-current and cycle-by-cycle peak current limit protection
• Offers output over-voltage protection with hysteresis recovery

Applications

• Universal AC input CCM boost PFC converters
• Server and desktop power supplies
• Industrial power supplies
• White good appliances

Procurement Notes

Verify the specific suffix 'MDREP' against the official datasheet to confirm military/extended temperature grade specifications and lot traceability requirements. Ensure the 16-SOIC package dimensions match the design footprint. Confirm RoHS3 compliance status as per the latest manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when designing CCM boost PFC stages requiring average current-mode control with extended temperature range capabilities. The 16-SOIC package suits designs needing robust thermal performance and pin count for additional control functions. Verify that the 6 kHz to 220 kHz frequency range aligns with the target acoustic and efficiency requirements of the application.

Part Context

This part belongs to the UCC2818 family of power factor correction controllers. It shares functional similarities with commercial variants like the UCC2818AD but is distinguished by its specific packaging and potential qualification standards indicated by the suffix. It serves as a core control IC for high-efficiency AC-DC conversion systems.

Replacement Considerations

Direct substitutes include other UCC2818 family members such as UCC2818AD or UCC2818ADR, provided the temperature range and package compatibility are verified. Cross-referencing with UCC2817 series devices may be possible if pinout and control topology differences are accounted for.