DC2481A-B

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DC2481A-B is an evaluation board of DC/DC & AC/DC (Off-Line) SMPS. It is designed to evaluate different off-line switcher/DC/DC converters, for instance, TV and PC (Personal Computer).

The working principle of this board centers around an UCC3806 Pre-Driver. This UCC3806 Pre-Driver is essentially an integrated control and driver circuit. This particular IC takes the total of the power obtained and splits that energy into two parts- one part is used to drive the rest of the power components, and the other part is used to power the PWM chip.

The heart of the DC2481A-B is the UCC3806 Pre-Driver. This driver, due to its abilities, downloads to the output power components, in this case a PWM switch and a power MOSFET, the appropriate signal and voltage. The principle of operation is simple- it shifts the voltage between two levels, with one of the levels being the voltage produced by the UCC3806, and the other being the modified signal which in summation makes the output voltage.

The PWM switch is a rather important part of the switched-mode power supply. It helps to ensure that the output voltage is maintained throughout. This is done by switching between the two states- one being the modified signal and the other being the voltage produced by the UCC3806. This switching will cause a ripple-like waveform on the output voltage, which is then filtered before the output voltage is put to use.

The power MOSFET is responsible for controlling the power flow between the input and output. It is essentially an electro-mechanical switch which is toggled based on the level of the charge it has reached. The MOSFET allows the power to flow in one direction, and stops it from flowing in the other. As such, it helps to limit the amount of energy dissipated and provides a considerable amount of regulating the output voltage.

In order to evaluate different off-line switcher/DC/DC converters, the DC2481A-B offers a full suite of measurement and diagnostic tools. This includes a scope, a dc meter, an ac meter, as well as a power consumption measurement and monitoring device. This enables the user to analyze the performance characteristics of the switcher/DC/DC converter, as well as identify and troubleshoot any potential issues.

Overall, the DC2481A-B offers an excellent platform for evaluating different switcher/DC/DC converters. Its working principle is based on an integrated control and driver circuit, which it uses to download to the output power components the appropriate signal and voltage. In addition, it is equipped with a full suite of measurement and diagnostic tools, allowing the user to not only identify any potential issues but also accurately measure the performance of the component or circuit.

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