DC793A

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Under the Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS, DC793A is an application field and working principle. It is a high-performance 8 to 40 watt dc-dc converter with an output range from 0.8V to 5.5V. DC793A supports up to five outputs, plus three additional square-wave outputs for control and synchronization. DC793A includes universal PFC input, digital control, advanced dynamic tracking loop, and wide adjustability for frequency and duty cycle.

DC793A\'s working principle begins with a Buck controller, also known as a voltage mode PWM (Pulse-width Modulation) controller. The PWM controller converts the output voltage of the converter into a linear range, which is then fed into the voltage sensing circuit. The voltage sensing circuit picks up the output of the PWM controller and adjusts the frequency and duty cycle automatically to achieve the correct output voltage. The duty cycle is controlled by a programmable delay between the start of each pulse.

To achieve an accurate output voltage, the DC793A requires power components such as inductors, resistors, and capacitors. The inductors and resistors are connected to the input voltages of the converter, while the capacitors are connected to the output voltage. These components act as buffers to maintain the output voltage at a constant level. In order for the DC793A to maintain the correct output voltage, it uses a comprehensive feedback system to sense the output voltage and control the duty cycle and frequency accordingly.

To sum up, DC793A application field and working principle is a high-performance 8 to 40 watt dc-dc converter with universal PFC input, digital control, advanced dynamic tracking loop, and wide adjustability for frequency and duty cycle. It has a Buck or voltage mode PWM controller with voltage sensing circuit to continually adjust the frequency and duty cycle to achieve the desired output voltage. It also uses power components such as inductors, resistors, and capacitors connected to the input and output voltages to maintain the output voltage at a constant level. Finally, the DC793A uses a comprehensive feedback system to sense the output voltage and control the duty cycle and frequency accordingly.

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