UCC2818APW

Overview

The UCC2818APW is a BiCMOS power factor preregulator designed for average current mode control. It operates within a switching frequency range of 6 kHz to 220 kHz and supports applications under 150 W and over 750 W. The device features an enable pin, overvoltage protection (OVP), and operates on an 18 V supply. It is housed in a 16-pin TSSOP package with dimensions of 5 mm length, 4.4 mm width, and 1.15 mm height, weighing 173 mg.

Feature Summary

• Implements average current mode control for power factor correction
• Includes integrated overvoltage protection circuitry
• Features an enable input for system power management

Applications

• Power supplies rated under 150 W
• High-power applications exceeding 750 W
• BiCMOS power factor preregulators

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-16 tube packaging variant. Confirm the component meets required automotive or industrial qualification standards if applicable, as standard commercial versions may differ from qualified counterparts. Ensure the design accounts for the specified 18 V operating voltage and thermal constraints associated with the TSSOP package.

Selection Notes

Select this component when average current mode PFC is required for systems ranging from low power under 150 W to high power above 750 W. The wide frequency range allows flexibility in magnetics design. The TSSOP-16 package offers a compact footprint suitable for space-constrained designs requiring integrated OVP and enable functionality.

Part Context

This part belongs to the UCCx81xA series of BiCMOS power factor preregulators from Texas Instruments. These controllers are engineered to improve line current harmonics and power factor in AC-DC conversion stages. The series typically integrates essential protection features and supports various power levels through adjustable operating parameters.

Replacement Considerations

Direct substitutes include other parts within the UCC2818A family, such as UCC2818AD or UCC2818AQDRQ1, depending on the required package type and qualification level. Verify compatibility regarding pinout and electrical specifications before substitution.