UCC3961N

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

UCC3961N Application Field and Working Principle

The UCC3961N is a DC-DC synchronous buck switching controller IC featuring a host of integrated features and functions. It supports wide input voltage range, synchronization, constant on-time control, an adjustable output voltage, and integrated power-up sequencing. As a member of the Universal Controllers, it is also designed for use with a variety of external components for a wide range of applications.The UCC3961N belongs to the group of PMIC (Power Management IC) devices which are mainly used for power regulation in electronic circuits. This specific IC is categorized as a voltage regulator in the group of DC-DC switching controllers.This paper will describe the functionality and features of the UCC3961N, including its application field and working principle.

Application Field of UCC3961N

The UCC3961N is mainly used as a DC-DC step-down converter - also known as a synchronous buck converter. It can be used to efficiently convert high-voltage DC power supply to low voltage DC power supply that can directly power systems and peripherals. This IC works over a wide range of input/output voltages, supports synchronization, and provides adjustable output voltage. It also allows an external MOSFET to be used and has integrated powerup sequencing.

Working Principle of UCC3961N

The UCC3961N is a DC-DC switching controller IC with an adjustable output voltage. It works on the principle of synchronous buck conversion. This is achieved by connecting an external MOSFET switch to the controller, which switches the input voltage applied to a synchronous rectifier circuit. The switching of the MOSFET is controlled by the controller through a control voltage. The switching frequency of the MOSFET is determined by the internal oscillator of the controller.The output voltage of the converter is controlled by the control voltage. This is because the control voltage determines the switching period of the MOSFET and thus determines the amount of energy that is transferred from the input voltage to the load. The output voltage of the converter can be programmed by adjusting the control voltage. This is done by the internal voltage regulation circuitry in the controller.The UCC3961N also supports synchronization of the MOSFET switch, allowing multiple controllers to be used in parallel with each other. This improves the conversion efficiency of the whole system as the MOSFETs are not switching at the same time and thus not creating any additional heat.In addition, the UCC3961N provides power-up sequence support. This allows the output voltage to be increased in a stepped manner, thus reducing the inrush current when powering up the system. It also reduces the start-up time of the controller and thus makes it suitable for applications with tight start-up time constraints.

Conclusion

The UCC3961N DC-DC switching controller IC is used in a wide range of power management applications. It is a synchronous buck switching controller IC with an adjustable output voltage, synchronization support, and integrated power-up sequencing. It provides efficient and reliable power conversion for various applications and is well suited for applications with tight start-up time constraints.

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