UCC28220PW

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The UCC28220PW is a high-performance Pulse-Width Modulation (PWM) controller for use in switched-mode power supplies. It is designed to regulate the output voltage or current of a switching power supply. The UCC28220PW features a wide operating input voltage range from 7.0V to 28V and allows designers to optimize the output performance and minimize cost for AC/DC and DC/DC applications. In addition, UCC28220PW offers several protection features such as over-temperature, over-voltage and overload protection.

The UCC28220PW uses an external oscillator to generate a controlled-frequency signal. This signal is used to drive the power switches of the power supply. The oscillator frequency can be set between 400kHz to 1.2MHz, allowing implementation of high-efficiency power supplies with minimal external components. The UCC28220PW can be configured in a number of topologies, delivering stable, accurate and efficient output voltage or current control.

UCC28220PW application field can be found at AC/DC and DC/DC power supplies. It is suitable for adapter, adjustable power supply, charger, mobile machine and medical applications. UCC28220PW is optimized for an input voltage of 7V to 28V and a wide range of output voltage and current requirements. The precision voltage or current regulation of this controller can help to reduce external part cost and simplify designs.

The maximum output current of UCC28220PW can reach 2 A and the operation temperature range is - 40°C to + 125°C. In addition, the open loop voltage regulation of UCC28220PW offers an accuracy of ±2% over load range of 0-100%. Furthermore, it is also possible to over-voltage protection and short circuit protection to prevent damage due to surge voltage or overloading.

The working principle of UCC28220PW is based on a feedback control technique. UCC28220PW uses internal circuit elements to process the error signal from the voltage regulator loop. The error signal is a measure of the difference between the desired output voltage and the actual output voltage. The error signal is then used to adjust the duty cycle of the power switches in order to regulate output voltage or current. The duty cycle is changed until the error signal is reduced to a minimum, indicating that the desired voltage or current is being supplied.

As a high-performance Pulse-Width Modulation (PWM) controller, UCC28220PW is widely used in AC/DC and DC/DC power supplies, which makes it an important part of modern power supply industry. With the accurate voltage and current regulation capability, UCC28220PW can minimize part cost and simplify designs. Furthermore, UCC28220PW is also equipped with several protection features, making it an effective solution for a variety of applications.

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