The UCC28085DR is a versatile and efficient PWM (Pulse Width Modulation) controller from Texas Instruments, designed for use in a wide range of power supply applications. This device is part of the BiCMOS family and incorporates an array of features that make it ideal for off-line and DC-to-DC fixed-frequency current-mode switching power supplies with minimal external components.

Key Features

• Dual Output Drive Stages: The UCC28085DR features push-pull output stages that enable the device to drive a transformer directly, which simplifies the design and reduces component count.
• Current Mode Control: This control method provides superior bandwidth and transient response, as well as inherent protection against short circuits.
• Adjustable Switching Frequency: The device allows for a programmable switching frequency ranging from 50 kHz to 500 kHz, enabling flexibility in the design of the power supply.
• Internal Slope Compensation: This feature adds stability to the power supply by compensating for the inherent slope of the current-mode PWM.
• Green Product: The UCC28085DR is RoHS compliant and free from hazardous substances, making it a sustainable choice for environmentally conscious applications.

Applications

The UCC28085DR is suitable for a variety of applications, including:

• AC/DC power supplies for consumer electronics
• Isolated and non-isolated power supplies
• Power supplies for communication devices
• LED drivers and power converters

Package and Quality

The device is offered in an 8-pin SOIC package, which is compact and suitable for space-constrained applications. It is designed to meet the high-quality standards set by Texas Instruments, ensuring reliability and performance in demanding environments.

Conclusion

The UCC28085DR from Texas Instruments is a robust and flexible solution for designers looking to create efficient and reliable power supplies. Its comprehensive feature set and adaptability make it a go-to choice for a wide range of power management applications.