The UCC25701D from Texas Instruments is a high-performance, fixed-frequency current-mode PWM controller designed for a wide range of power supply applications. This versatile controller integrates several features that enhance the reliability and performance of switch-mode power supplies (SMPS), including those used in off-line and DC-to-DC converter configurations.

Key Features

• Current-Mode Control: The UCC25701D employs current-mode control to provide fast transient response and excellent loop stability.
• Programmable Switching Frequency: Users can set the operating frequency from 100 kHz to 1 MHz, allowing flexibility in the design of the magnetic components and optimization of efficiency.
• High-Current Totem-Pole Output: The device features a totem-pole output stage capable of driving a power MOSFET or IGBT directly, simplifying the design and reducing component count.
• Soft-Start Function: A soft-start function limits the inrush current during startup, reducing stress on the power supply components and improving system reliability.
• Under-Voltage Lockout (UVLO): The UVLO feature ensures that the controller operates only when the supply voltage is within the specified range, protecting the circuit from low-voltage conditions.

Applications

The UCC25701D is suitable for a variety of applications, including:

• AC-DC power supplies for consumer electronics
• Telecommunication and computer power systems
• Industrial power supplies
• DC-DC converters

Quality and Reliability

As with all Texas Instruments products, the UCC25701D is designed to meet the highest quality and reliability standards. It is available in the industry-standard 8-pin SOIC package, making it easy to integrate into existing designs. Whether you're developing a new power supply or upgrading an existing one, the UCC25701D offers a reliable and efficient solution for your PWM control needs.

Technical Specifications

For detailed information, datasheets, and technical support, visit the Texas Instruments website to learn more about the UCC25701D PWM controller.