UCC2581D

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

UCC2581D Application Field and Working Principle

The UCC2581D is a low-side-only high-side-sink DC-DC switching controller designed to control the output voltage of a system that requires a constant output. The device utilizes a Single-Ended Primary-Inductor Converter (SEPIC) to provide a constant output voltage. This device is commonly used in power supplies, motor control applications and many other industrial applications where a constant output is required.

UCC2581D Application Field

The UCC2581D is mainly used in low-voltage, high-current applications in industrial, automotive and energy harvesting applications. It is also often used in applications such as power supplies, motor controllers, and AC-DC Adapter designs. The device is ideal for systems that require very low quiescent current, very low residual noise, and a scalable control loop.

The device can also be used for synchronous buck converters, flyback converters, and buck-boost converters with step-up, step-down, and inversion operations. It is designed to provide high-performance control and efficiency while reducing external components and board space.

UCC2581D Working Principle

The UCC2581D utilizes an integrated, low-side-only high-side-sink DC-DC switching controller. This allows it to regulate the output voltage in a wide range of voltage levels, while minimizing the need for external components. The output of the device is controlled by the regulated voltage at the VOUT pin. When the voltage at the VOUT pin is below the setpoint, the low-side MOSFET is turned on to increase the output voltage. When the voltage at the VOUT pin is above the setpoint, the low-side MOSFET is turned off and the high-side sink MOSFET is turned on to decrease the output voltage.

The device utilizes a simple SEPIC converter architecture to ensure constant output voltage despite changes in input voltage or load. When the input voltage is higher than the established voltage of the system, the device allows the output voltage to increase. Conversely, when the input voltage is lower than the established voltage, the device allows the output voltage to decrease. This ensures a constant output voltage despite changes in input voltage or load.

The UCC2581D also features integrated safety and protection mechanisms that ensure safe operation and efficient power transfer. For example, during a short circuit event, the device will enter a protected state by turning off immediately to protect the system from possible damage.

Conclusion

The UCC2581D is a low-side-only, high-side-sink DC-DC switching controller designed to control the output voltage of a system. It is commonly used in power supplies, motor controllers, and AC-DC Adapter designs. The device utilizes a simple SEPIC converter architecture to ensure constant output voltage regardless of input voltage or load. In addition, the device features integrated safety and protection mechanisms that ensure safe operation of the system.

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