UCC256601DDBR

Power Supply Controllers, Monitors Overview

The UCC256601DDBR is a high-frequency LLC resonant controller from Texas Instruments, designed for efficient power conversion. It supports an input voltage range of 2.6V to 5.5V and operates at full-load switching frequencies between 50kHz and 750kHz. The device integrates Input Power Proportional Control (IPPC) to enable wide input/output voltage range operation. Key electrical parameters include a maximum output current capability of 1.2A and a typical operating supply current of 2.2mA.

Power Supply Controllers, Monitors Feature Summary

• Integrates Input Power Proportional Control (IPPC) to simplify design for wide input and output voltage applications.
• Features enhanced light load management with high-frequency pulse skipping to improve efficiency and audible frequency range jumping to reduce noise.
• Includes automatic capacitance region avoidance and adaptive soft-start with reverse recovery avoidance to protect FETs during startup.
• Provides integrated PFC on/off control signals to further reduce standby power consumption in non-universal input applications.

Power Supply Controllers, Monitors Applications

• LED drivers requiring wide input/output voltage ranges
• Battery chargers with broad operational specifications
• Power supplies without Power Factor Correction (PFC) stages
• Pre-biased load applications

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix DDBR indicates the SOIC-14 tape and reel packaging configuration when sourcing. Confirm that the component meets RoHS compliance standards as per manufacturer documentation. Ensure compatibility with the intended thermal environment, noting the specified operating temperature range. Cross-reference the datasheet for moisture sensitivity levels and reflow soldering profiles prior to assembly.

Power Supply Controllers, Monitors Selection Notes

Select this controller for designs prioritizing high efficiency across varying load conditions. The IPPC feature is critical for applications needing simplified control loops over wide voltage spans. Consider the integrated protection mechanisms for robustness against FET stress. Evaluate the audible noise reduction features if acoustic performance is a constraint in the final product.

Power Supply Controllers, Monitors Part Context

This component belongs to the UCC25660x series of high-frequency LLC controllers. It is engineered for advanced resonant converter topologies, offering superior light-load performance compared to standard controllers. The series addresses common challenges in modern power supplies, such as standby power loss and audible noise, through specialized control algorithms.

Power Supply Controllers, Monitors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other UCC25660x variants based on pinout and specification requirements before considering alternatives.

Power Supply Controllers, Monitors FAQ

How does the UCC256601DDBR handle light load conditions?

It utilizes enhanced light load management featuring high-frequency pulse skipping to maintain efficiency and audible frequency range jumping to minimize audible noise.

What is the purpose of the IPPC feature?

Input Power Proportional Control (IPPC) allows the controller to operate efficiently across a wide input and output voltage range, simplifying the design for applications like LED drivers and battery chargers.