UCC2837DTR

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The UCC2837DTR is a switching High Side MOSFET controller designed for DC-DC synchronous buck converter applications that require high precision output voltage regulation or current regulation. It uses a patented independent current loop control method to achieve fast transient response and excellent line regulation. Using the peak current control method, the UCC2837DTR is capable of providing peak current regulation of up to 80 mA. The advanced features of the UCC2837DTR such as programmable current sense levels, frequency synchronization, preset operating temperature range and voltage loop compensation, make it an ideal controller for a wide range of voltage regulator applications.

The application field of UCC2837DTR can be broken down into multiple segments. It is widely used in industrial, automotive and consumer applications, including but not limited to, DC-DC converters, processor core voltage regulation, notebook and desktop PC power supplies and displays, cellular phone charger power supplies, and battery leakage current monitoring.

The working principle of UCC2837DTR is based on the peak-current mode control which enables an accurate and fast response during transients. This is achieved by digitizing the output stage current using an analog-to-digital converter. The current level is then compared to the peak reference current level (IRB), which is programmed by an external current setting resistor. When the current level reaches the programmed IRB level, the controller immediately reduces the output voltage. This method provides good output voltage regulation, robust transient load performance, low line noise and high efficiency.

In addition to its peak current control, the UCC2837DTR also offers programmable slew rates, frequency synchronization circuit, thermal protection and voltage loop compensation. This ensures that the controller provides high performance and reliable operation in a wide range of applications. The vast feature set coupled with its cost-effective nature makes UCC2837DTR an ideal choice for a variety of voltage regulator applications.

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