UCC2817D

Overview

The UCC2817D is a Power Factor Correction (PFC) controller from Texas Instruments, designed for average current mode control. It operates within a switching frequency range of 6 kHz to 220 kHz and supports a supply voltage between 12 V and 17 V. The device features a start-up supply current of 150 µA and is housed in a 16-SOIC package with dimensions of 10 mm x 4 mm x 1.5 mm. It functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Implements average current mode control for power factor correction applications
• Includes zero-power detection capability for enhanced efficiency at light loads
• Supports variable switching frequencies up to 220 kHz

Applications

• Power factor preregulator circuits
• Average current mode PFC designs
• BICMOS power factor correction systems

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC-16 package variant. Confirm RoHS3 compliance status as per the latest datasheet revision. Check for any Product Change Notifications (PCN) regarding packaging or material updates before finalizing procurement orders.

Selection Notes

Select this component when average current mode control is required for PFC stages. Ensure the design accommodates the 12 V to 17 V supply range and the 16-pin SOIC footprint. Validate that the maximum switching frequency requirement does not exceed 220 kHz for optimal performance.

Part Context

This part belongs to the UCC2817 family of PFC controllers. It is distinct from critical conduction mode variants like the UCC28180 series. The device is classified under PMIC power management integrated circuits specifically for power factor correction.

Replacement Considerations

Check for direct pin-compatible alternatives within the UCC2817 family. Verify if upgraded versions such as the UCC3817 series are available for legacy replacements. Ensure functional equivalence in control topology before substitution.