UCC2818D

The UCC2818D is a BiCMOS Current-Mode PWM Controller IC designed for high-performance power supply applications. This IC features precision internal references, enabling reliable and efficient control of DC-DC converters and other power management systems.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• FB: Feedback Pin
• RT/CT: Timing Resistor/Capacitor Pin
• COMP: Compensation Pin
• VREF: Reference Voltage Output
• VI: Voltage Input
• SENSE2+: Positive Current Sense Input
• SENSE2-: Negative Current Sense Input
• SENSE1+: Positive Current Sense Input
• SENSE1-: Negative Current Sense Input
• UVLO: Undervoltage Lockout Pin
• VREF: Reference Voltage Output
• SS/TR: Soft Start/Tracking Pin
• VCC: Power Supply Input
• OUT: Gate Driver Output
• RT/CT: Timing Resistor/Capacitor Pin
• SENSE1+: Positive Current Sense Input
• SENSE1-: Negative Current Sense Input

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the UCC2818D IC for a visual representation.

Key Features

• Precision Internal References: The UCC2818D integrates precision references for accurate voltage and current control in power supply designs.
• BiCMOS Technology: This IC utilizes BiCMOS process technology, combining the benefits of bipolar and CMOS technologies for high-performance operation.
• Current-Mode Control: Features current-mode architecture for improved line regulation and transient response in power converter applications.
• Soft Start/Tracking Function: Includes a soft start/tracking pin for controlled start-up and output voltage tracking.
• Cycle-by-Cycle Current Limit: Incorporates cycle-by-cycle current limiting for overcurrent protection in power conversion systems.

Note: For detailed technical specifications, please refer to the UCC2818D datasheet.

Application

• DC-DC Converters: Ideal for controlling and regulating DC-DC converter circuits in various power supply applications.
• Power Management: Suitable for use in power management systems, including voltage regulators and power factor correction circuits.
• LED Drivers: Can be employed in LED driver circuits for efficient and reliable LED lighting solutions.

Functionality

The UCC2818D is a BiCMOS Current-Mode PWM Controller IC designed to provide precise control and regulation of power supply systems. It offers enhanced performance and functionality for a wide range of power management applications.

Usage Guide

• Power Supply: Connect VCC (Pin 11) to the power supply input within the specified voltage range.
• Feedback Loop: Use the FB (Pin 1) and COMP (Pin 3) pins to configure the feedback loop for voltage regulation.
• Current Sensing: Connect the SENSE1+ (Pin 8) and SENSE1- (Pin 9) pins for accurate current sensing and control.

Frequently Asked Questions

Q: What is the recommended voltage input range for the UCC2818D?
A: The UCC2818D operates within a recommended voltage input range as specified in the datasheet. It is important to adhere to these voltage input requirements for optimal performance.

Q: Can the UCC2818D be used for high-power applications?
A: Yes, the UCC2818D is suitable for a range of power levels and can be utilized in various high-power applications, provided that the operating conditions are within the specified limits.