UCC28220DG4

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Power management integrated circuits (PMICs) include a variety of sophisticated hardware and software features that can help manage and regulate the power consumption of digital and analog circuits. PMICs provide the basic building blocks for power management and are used in a wide variety of electronic products. Power management integrated circuits are used in various applications and for various purposes, and are available in a variety of sizes, form factors, and designs. The UCC28220DG4 is one such type of PMIC. It is a highly integrated DC-to-DC converter with a switch mode power supply (SMPS) controller.

UCC28220DG4 Application Field

The UCC28220DG4 is typically used in AC/DC and DC/DC applications. It is a high-performance converter that can be used to power a range of devices, including small appliances, medical equipment, portable electronics, and industrial and tabletop equipment. The UCC28220DG4 contains a primary side SMPS controller, has synchronous rectification, and requires an external MOSFET switch to complete the design. It features high efficiency, low standby power, a wide input voltage range of up to 33V, and an adjustable output voltage of up to 10A.

In terms of its applications, the UCC28220DG4 is typically used in AC/DC or DC/DC switch mode power supplies (SMPS) with a wide input voltage range. It is often used in battery-powered devices such as mobile phones, music players, digital cameras, personal digital assistants (PDAs), notebook computers, and other portable electronic devices. It is also used in industrial and medical applications, including in test equipment and distributed power systems.

Working Principle of the UCC28220DG4

The UCC28220DG4 is an integrated circuit that utilizes a switch mode power supply (SMPS) topology. It contains an integrated SMPS controller with synchronous rectification and requires an external MOSFET switch to complete the design. The UCC28220DG4 operates in pulse width modulation (PWM) mode and has an adjustable output voltage frequency of up to 10A.

The UCC28220DG4 contains an LM-buster topology with a two-level active voltage regulation loop. The LM-buster topology is an inductor-less, current-mode power supply design, which features low cost and excellent performance. In this topology, the MOSFET serves as the controllable switch, while the UCC28220DG4 SMPS controller regulates the output voltage. The primary side controller regulates the output voltage by detecting the error voltage and controlling the duty cycle of the MOSFET switch based on the measured voltage.

The UCC28220DG4 has a power-saving mode that can be enabled when the output voltage is between 0V and 2.1V. In this mode, the SMPS controller turns off the power switch and disconnects the output load from the power supply. The power-saving mode is enabled by setting the PWM pin to high. Once the output voltage reaches 2.1V, the switch turns on again and the power supply continues to operate.

Conclusion

The UCC28220DG4 is a highly integrated DC-to-DC converter with a switch mode power supply (SMPS) controller. It is typically used in AC/DC and DC/DC applications, such as for powering small appliances, medical equipment, portable electronics, and industrial and tabletop equipment. The UCC28220DG4 uses an LM-buster topology with a two-level active voltage regulation loop and a power-saving mode that can be enabled when the output voltage is between 0V and 2.1V. It is an excellent choice for a wide range of applications.

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