UCC2800DTR Integrated Circuits (ICs)

The UCC2800DTR is an dual-mode, continuous-conduction, current-mode DC-DC switching controller developed by Texas Instruments. It is used as a control circuit for most of the power conversion applications associated with voltage regulators and DC-DC switching power supplies in a variety of fields.

The UCC2800DTR provides a variety of features and functions to help users meet power requirements in various application fields. It can monitor and output maximum power point tracking and duty cycle control for solar applications, overload protection for wheelchair applications, and high frequency minimum jitter for timing applications. It also offers low-noise operation, low standby current, and high efficiency. Furthermore, its operating frequency is adjustable from 50kHz to 500kHz, allowing users to optimize their application\'s current and noise.

The UCC2800DTR uses a continuous conduction current-mode topology and is designed to achieve low-noise operation and high efficiency in power conversion applications. In addition to its current-mode control, the UCC2800DTR can also be programmed to provide separate bursts of voltage across its output making it suitable for applications such as telecommunications, medical, printers, and in other applications.

The working principle of the UCC2800DTR is based on a two-level voltage control loop. The primary loop is used to control the peak output current, while the secondary loop derives its reference from the primary loop\'s output and is used to regulate the output voltage. Additionally, the UCC2800DTR is able to switch modes during operation which helps to maximize efficiency.

In the current-mode control loop, the UCC2800DTR monitors the on-board MOSFET current and senses the peak current through the primary winding or inductor. When the sensed peak current is higher than the target level, the power switch is turned off and the peak current is lowered until it reaches the target. This helps to regulate the output voltage, keeping it near its set point.

The UCC2800DTR is an excellent choice for providing high efficiency and low noise in power supply applications. Its two-level voltage control loop enhances the peak current regulation and helps to maintain current regulation even under varying operating conditions. Additionally, the adjustable switching frequency makes the UCC2800DTR an excellent choice for many applications in the industry.