Texas Instruments

UCC2818DG4  

Power Factor Correction ICs

UCC2818DG4 Description

The UCC2818DG4 is a high-performance Power Factor Correction (PFC) controller designed for demanding power management applications. Manufactured by Texas Instruments, this device operates in Average Current Mode, ensuring precise control and regulation of the input current waveform. The UCC2818DG4 is housed in a Tube package, making it suitable for surface mount applications, and is designed to operate within a switching frequency range of 6kHz to 220kHz. This wide frequency range allows for flexibility in design and optimization of power conversion efficiency.

UCC2818DG4 Features

• Average Current Mode: The UCC2818DG4 employs an average current mode control scheme, which provides superior line and load regulation. This mode of operation ensures that the input current waveform closely follows the input voltage waveform, thereby improving power factor and reducing harmonic distortion.
• Wide Switching Frequency Range: With a switching frequency range of 6kHz to 220kHz, the UCC2818DG4 offers designers the flexibility to optimize their power supply designs for size, efficiency, and cost. This wide range allows for the use of smaller inductors and capacitors, which can reduce the overall footprint and cost of the power supply.
• Low Startup Current: The device features a low startup current of only 150 µA, which is beneficial for applications where power consumption during startup is a concern. This low startup current helps to reduce the overall power consumption of the system and can contribute to longer battery life in portable applications.
• Robust Compliance and Reliability: The UCC2818DG4 is REACH Unaffected and RoHS3 Compliant, ensuring that it meets the highest environmental and safety standards. This compliance is crucial for applications in regulated industries and helps to ensure the longevity and reliability of the device.
• Wide Supply Voltage Range: The UCC2818DG4 operates within a supply voltage range of 12V to 17V, making it suitable for a wide range of power supply applications. This wide voltage range provides flexibility in design and ensures that the device can operate reliably under varying input conditions.

UCC2818DG4 Applications

The UCC2818DG4 is ideal for a variety of power management applications, particularly those requiring high efficiency and precise control. Some specific use cases include:

• AC-DC Power Supplies: The UCC2818DG4 is well-suited for use in AC-DC power supplies, where its average current mode control and wide switching frequency range can help to improve power factor and reduce harmonic distortion. This makes it an excellent choice for applications such as computer power supplies, home appliances, and industrial equipment.
• Uninterruptible Power Supplies (UPS): The device's low startup current and wide supply voltage range make it an ideal choice for UPS applications. The ability to quickly and efficiently start up the power supply is crucial in these applications, and the UCC2818DG4's low startup current helps to ensure reliable operation.
• Telecommunications Equipment: The UCC2818DG4's robust compliance and reliability make it suitable for use in telecommunications equipment, where high efficiency and precise control are essential. The device's ability to operate within a wide supply voltage range also makes it ideal for use in applications where input voltage variations are common.

Conclusion of UCC2818DG4

The UCC2818DG4 is a versatile and high-performance PFC controller that offers a range of features and benefits for power management applications. Its average current mode control, wide switching frequency range, and low startup current make it an excellent choice for applications requiring high efficiency and precise control. The device's robust compliance and reliability further enhance its suitability for use in a wide range of applications, from AC-DC power supplies to telecommunications equipment. With its combination of advanced features and reliable performance, the UCC2818DG4 stands out as a superior choice for power management solutions.

UCC2818DG4 Documents

Download datasheets and manufacturer documentation for UCC2818DG4

Datasheets :

UCC2817/18, UCC3817/18