UCC3802N

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The UCC3802N from Texas Instruments is a high-performance monolithic full-wave synchronous buck controller specifically designed for offline power supplies that require high performance and low cost. The device features two pins for programming the switching frequency and inductor current limit thresholds. This allows the designer to customize the output power based on the specific application requirements. The UCC3802N provides a complete solution for power conversion applications as it integrates all of the necessary features in one package.

The UCC3802N has a wide range of application fields, including in the power conversion sector, such as off-line switch mode power supplies (SMPS) used in lighting, home appliances, industrial motor drive systems, variable speed motor drives, PC power supplies, and the charging of lithium ion batteries.

The working principle of the UCC3802N is relatively simple. It uses a MOSFET as a switch, which is turned on for a set length of time (duty cycle) to control the output power. The MOSFET is driven by a high speed signal from the internal oscillator, which is adjustable via an external clock signal. The duty cycle is modulated by controlling the current flowing through an inductor. The current through the inductor is monitored by the UCC3802N via an integrated sense resistor, which is used to limit the maximum current through the switch.

When the MOSFET is closed, the current in the inductor increases and when the MOSFET is open, the current in the inductor decreases. The output power is then controlled by adjusting the duty cycle of the switch. The UCC3802N also includes an active current limit which senses the current in the inductor and limits the maximum output current.

In summary, the UCC3802N from Texas Instruments is an excellent choice for converting power in offline applications. It is an integrated, full-wave synchronous buck controller that features a variety of features for programming and controlling the output power. It is used in a wide range of applications, including switch mode power supplies, variable speed motor drives, and the charging of lithium ion batteries, and the principle of operation is relatively straightforward.

The specific data is subject to PDF, and the above content is for reference