UCC28220D

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UCC28220D is an innovative DC-DC switching controller designed by Texas Instruments. It is a dual-channel device that works at a 200kHz switching frequency, simultaneous or independent control of two outputs, and a rail-to-rail input range. It enables multiple topologies such as the buck, boost, flyback, and multi-channel buck-boost converter. It also features integrated safety features such as overload protection, over-current protection, and temperature protection.

UCC28220D is a highly integrated dual-controller solution for low-power, small form-factor DC-DC supplies with various topologies, such as flyback, buck, and boost. The device is designed for tablet/notebook, portable medical, white goods, and industrial applications. Its features include adjustable slew rate, integrated over-temperature protection, pulse-by-pulse current limit protection, and diode emulation.

Application Field: The UCC28220D is designed to provide high efficiency solution for all demand of DC-DC regulators. It is suitable for low voltage, low power mobile and industrial applications, such as white goods, tablets, notebooks and portable medical devices.

Working Principle: UCC28220D employs a synchronous rectification control technique and intelligent compensation to exploit the full range of power MOSFETs for higher efficiency with different load conditions. When operating in constant frequency mode, it utilizes advanced time-sharing control to extend the range of operation and gives optimal energy efficiency. It also provides seamless transition from burst-mode operation to constant-frequency mode, and vice versa.

To provide superior user flexibility, UCC28220D integrates several loop stability features, such as Analog Soft Start and Digital Soft Start, to ensure a smooth transition. In addition, an integrated thermal sensor provides over-temperature shut down by monitoring device temperature and preventing circuit damage due to long on/off switching times. This facilitates ease of use and reliability in any application.

UCC28220D provides designers with a variety of features and functions to ensure high performance and reliable operation in a wide range of applications. It offers the flexibility to design a wide range of converter topologies and delivers superior cost-to-performance ratios for the most complex requirements.

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