UCC2961D

UCC2961D application field and working principle

UCC2961D belongs to a DC-DC switching-mode controller family developed by Texas Instruments, with high frequency operating capability ranging from 500 kHz to 2 MHz. As a voltage regulator, UCC2961D can be used for various types of switching regulators. This type of regulator falls into the category of PMIC (Power Management Integrated Circuit). Specifically, this regulator belongs to the Voltage Regulators family, and then to the DC-DC Switching Controllers.

Application Field

UCC2961D is suitable for use in a wide range of applications, including offline flyback converters and quasi-resonant operation, providing good performance and excellent control in time. UCC2961D is designed to achieve best in class efficiency and provide high current compliance and high EMI performance, making it ideal for ultra-synchronous LED drivers, lighting ballasts, innovative notebook adapters, and other highly efficient switchmode power supplies. Its features include:

• Wide operating range of 1.8V to 5.5V
• Programmable OVP and OCP
• Programmable frequency/duty cycle
• High EMI performance for critical EMI areas
• Ultra-low standby power consumption
• High-impedance and low cost output for optically isolated applications
• Programmable frequency and duty cycle

UCC2961D also provides a wide range of protections, such as over-voltage protection, over-current protection, under-voltage protection, and over temperature protection, allowing it to be used in a variety of designs with maximum safety.

Working Principle

UCC2961D is an integrated circuit (IC) designed to control DC-DC switching regulators, and is the key component in the implementation of switching regulator power systems. It uses the existing application circuit to detect the output voltage, and then through the PWM signal generates the high side driver and low side driver, so as to adjust the duty cycle of the switching signal, thus achieving the purpose of controlling the output voltage. Generally speaking, the UCC2961D is capable of operating up to a frequency of 2 MHz, making it suitable for fast, high-efficiency switching regulator designs. The UCC2961D also contains a number of built-in protection circuits, such as over-voltage, over-current, and over-temperature protection, ensuring the safety and reliability of the circuit.

In summary, UCC2961D is an important component for the DC-DC switching regulator system, which is a key component for voltage regulators. With wide operating range, various protection functions and high-frequency operating capability, UCC2961D is suitable for various types of switching regulator designs. It is a good choice for reducing system costs, simplifying circuit design, and providing robust and reliable protection in power system design.