UCC28083DR

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The UCC28083DR is an offline PWM switcher for adjustable AC/DC converters. It has an adjustable output voltage range and is suitable for use in medium/high power cross regulation and CV/CC applications. The UCC28083DR works with a wide input voltage range and is suitable for a wide range of applications.

The UCC28083DR has a wide range of features, including: adjustable output voltage over a wide range, low start-up current, low power drain, excellent thermal performance, soft-start, voltage and current sensing capability, adjustable switching frequency, and high-speed turn on and turn off.

The UCC28083DR is a pulse-width modulation (PWM) switcher for adjustable AC/DC converters that can be used in medium/high power cross regulation and CV/CC applications. It has an adjustable output voltage range of 18 to 130 VDC, adjustable switching frequency from 0.1 to 20 kHz, and a maximum output current of 18 A. The UCC28083DR is an excellent choice for applications that require a low start-up current, low power drain, excellent thermal performance, and high-speed turn on and turn off.

The core of the UCC28083DR is a voltage feedback loop that is used to ensure that the output voltage is held constant across a wide range of load current. It accomplishes this by controlling the average voltage at the switch node, and this average voltage is called the duty cycle. The duty cycle is directly related to the output voltage, and it is calculated based on the sensed output voltage and the reference voltage.

The UCC28083DR is capable of operating in either continuous conduction or discontinuous conduction mode. In continuous conduction mode, the current in the output inductor is always above the peak current level. In discontinuous conduction mode, the output inductor current can go below the peak current level and is dependent on the load current and the inductance value.

The UCC28083DR is also capable of current sensing and can be used to regulate the output current. The current sensing feature uses a sense resistor connected in series with the output to sense the output current. The sensed current information can be used to adjust the duty cycle of the PWM to accurately regulate the output current.

Overall, the UCC28083DR is an excellent choice for applications requiring an adjustable AC/DC converter with low start-up current, low power drain, excellent thermal performance, adjustable switching frequency, and high-speed turn on and turn off. It is suitable for a wide range of medium/high power cross regulation and CV/CC applications.

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