Texas Instruments

UC3854BDW

The UC3854BDW is a high-voltage, high-current PWM controller from Texas Instruments. It is designed for use in a variety of power conversion applications, including offline power supplies, DC-DC converters, and motor control.

Description:

The UC3854BDW is a monolithic integrated circuit that provides all the features required for a PWM controller. It includes an error amplifier, oscillator, dead time generator, and protection circuits. The device is available in a small-outline integrated circuit (SOIC) package, making it suitable for use in compact and portable applications.

Features:

• High-voltage, high-current PWM controller
• Wide input voltage range (up to 500V)
• High output current capability (up to 100A)
• Fixed or variable frequency operation
• External clock input for frequency synchronization
• Overcurrent protection
• Overvoltage protection
• Undervoltage protection
• Thermal shutdown
• Soft-start and burst mode operation for improved efficiency

Applications:

The UC3854BDW is suitable for a wide range of power conversion applications, including:

1. Offline power supplies
2. DC-DC converters
3. Motor control
4. Battery chargers
5. Inverters
6. Welding equipment
7. Uninterruptible power supply (UPS) systems
8. Telecommunications equipment

In summary, the UC3854BDW is a versatile and powerful PWM controller that can be used in a variety of high-voltage and high-current power conversion applications. Its compact size and wide range of features make it an ideal choice for designers looking for a reliable and efficient solution for their power conversion needs.