UCC28780DR

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Texas Instruments\' UCC28780DR family is a multi-topology, continuous conduction mode (CCM) controller for high power AC-DC and DC-DC applications. It is used in both offline and auxiliary switch-mode power supply (SMPS) designs. The UCC28780DR controller family offers superior performance, high efficiency, low standby power, and a wide range of features for improved system design flexibility.

The UCC28780DR controller family can be used in a wide range of applications, such as large AC-DC systems, off-line SMPS, DC-DC converters, high-power LED lighting, motor controls and other high power applications. The controller family offers multiple protection features, including overvoltage, undervoltage, hiccup and other fault protection.

Working Principle

The UCC28780DR controller family builds upon Texas Instruments’ advanced digital control design which achieves superior performance and high efficiency in both AC-DC and DC-DC designs. The controller family uses a “double pulse ringing” or continuous conduction mode (CCM) control method, which provides a significant benefit in the control of high-power AC-DC and DC-DC designs by compensating for the power transistor output voltage losses. The controller family also provides robust signal- and load-conditioning features that provide superior protection in transient and fault conditions. Additionally, the controller family offers comprehensive protection features including input overvoltage protection, output overcurrent protection, and hiccup fault protection.

The UCC28780DR controller family supports various operational control modes, such as burst mode, voltage mode and current mode, allowing design flexibility and ease of use. The controller family also offers several cycle-by-cycle current limit options, allowing system designers to tailor the system performance to meet their specific requirements. The controller family also supports a wide range of operation and control cycles, which allows for optimized efficiency and system performance over a wide range of load conditions.

The UCC28780DR controller family also provides a number of innovative features, such as phase-shift control, overvoltage protection, short-circuit protection, and an “anti-ringing” feature, which can eliminate unwanted high frequency ringing from the design. Additionally, the UCC28780DR controller family supports an adjustable soft-start feature, allowing for controlled start-up in dynamically changing load conditions.

Conclusion

Overall, Texas Instruments’ UCC28780DR controller family provides a high performance, power-efficient, and highly integrated solution for a wide range of AC-DC and DC-DC applications. With its advanced digital control design, integrated protection features, and innovative features, the UCC28780DR controller family offers a robust, optimized solution for system designers.

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