UCC28083DG4

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The UCC28083DG4 is a high-efficiency offline PWM controller that is capable of driving a variety of AC-DC converters and offline switchers. It is designed to be the controller of choice for applications that require high-efficiency, high-bandwidth, low-cost and reliable operation. The UCC28083DG4 is targeted for applications such as lighting and automation.

The UCC28083DG4 uses a synchronous rectified gate drive architecture which enables a wide output voltage range as well as peak efficiency up to 99.6%. It is offered in eDR (environmentally friendly) package and comes with a range of safety features. The device is able to detect the input voltage, output current and power and the operating temperature range of the device is −40°C to +125°C.

The device is able to provide an efficiency of up to 99.6%, with ultra-low standby power consumption of up to 0.5W. It is also highly immune to low-frequency noise, as it supports frequency-shift modulation and active-clamp reset of the high- and low-side drivers. The wide input voltage range of the device (~10V to ~450V DC) also makes it suitable for a wide range of applications.

The UCC28083DG4 application field and working principle are based on the principles of synchronous rectification and active-clamp reset. It is designed for applications with input voltages from ~10V to ~450V DC and outputs from 5V to 16V. The UCC28083DG4 controls the power flow from an input supply to a connected load using an internal PWM controller, which is clocked by an external oscillator. Its internal circuit contains two low side drivers, one high side driver, two high and low side current sense amplifiers, a latch circuit, a voltage supervisor and several protection circuitries.

The UCC28083DG4 switches the power by applying a synchronous rectified gate drive to a power MOSFET. The on-time of the gate drive is controlled by the user programmed duty cycle. The device is clocked by decoupling the internal oscillator frequency with the input voltage and the output current. The active-clamp reset helps to reduce the gate charge loss and promote a higher switching frequency.

The device also integrates a variety of protection features, such as input over-voltage protection, output over-voltage protection, over-current protection and overtemperature protection. It also supports a broad range of fault protection conditions that can be configured according to the user\'s needs. In addition, it can be used to implement dynamic current limiting, allowing for an optimal balance between the peak efficiency and power consumption.

The UCC28083DG4 is a highly reliable and efficient AC-DC offline PWM controller. It is fairly easy to implement and can be used in a wide range of applications. It is also capable of providing peak efficiency up to 99.6%, with ultra-low standby power consumption of up to 0.5W. Furthermore, the wide input voltage range and the range of protection features make it an ideal choice for lighting and automation applications.

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