Overview of Texas Instruments UCC2807D-2

The Texas Instruments UCC2807D-2 is a versatile and efficient PWM controller designed for a wide range of power supply applications. This device is part of the UCC2807x family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. It stands out for its ability to drive a power MOSFET at frequencies up to 1 MHz, enabling compact and fast-switching power supply designs.

Key Features

• High-Frequency Operation: The UCC2807D-2 is capable of operating at high frequencies, with a range up to 1 MHz, which allows for smaller component sizes and faster response times in power supply circuits.
• Low Startup and Operating Current: This device features a low startup current of 100 µA and a typical operating current of only 1.5 mA, making it an energy-efficient choice for battery-operated and energy-sensitive applications.
• Advanced BiCMOS Technology: Utilizing BiCMOS technology, the UCC2807D-2 offers the high-speed performance of CMOS with the low power consumption and greater noise immunity of bipolar transistors.
• Trimmed Oscillator Discharge Current: The oscillator’s discharge current is trimmed to ensure precise duty cycle clamping, which is essential for reliable and consistent power supply operation.
• Programmable Soft Start: The inclusion of a programmable soft-start function helps to mitigate inrush current during startup, enhancing the overall stability and longevity of the power supply.

Applications

The UCC2807D-2 is suitable for a broad spectrum of applications, including:

• DC-DC converters
• Off-line power supplies
• Telecommunications equipment
• Portable electronics
• Industrial power systems

Package and Reliability

This PWM controller comes in a 14-pin SOIC package, which is compact and suitable for surface-mount technology (SMT), facilitating ease of integration into various circuit designs. Texas Instruments is known for their commitment to quality, and the UCC2807D-2 is no exception, with its design and manufacturing processes aimed at ensuring high reliability and performance.

For engineers and designers looking for a high-frequency, low-power PWM solution, the Texas Instruments UCC2807D-2 offers the functionality and performance needed to create efficient and compact power management systems.