SP7663EB

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The SP7663EB evaluation board is an off-line SMPS (switched mode power supply) designed to help evaluate and develop reliable and efficient power products. This board is suitable for both AC/DC and DC/DC applications. It features adjustable output voltage and over-voltage, over-current and overload protection. Additionally, this board provides a graphical user interface (GUI) for monitoring and controlling the power supply.

The SP7663EB application field is very wide as it can be used for a variety of SMPS designs. It can be used to power many consumer devices such as computers, TV and radio receivers, tablets and mobile phones, as well as other industrial and commercial devices. Additionally, it is suitable for low power and ultra-low power applications such as those found in portable medical and health care devices.

The working principle of the SP7663EB follows the same principle as other off-line SMPS. This consists of two stages: the first stage converts the AC mains power to a DC voltage and the second stage powers the loads directly from the DC voltage. The first stage is provided by an input rectifier and an EMI filter, both of which are located on the input of the board. The EMI filter reduces the electromagnetic interference (EMI) generated due to the switch-mode operation, while the input rectifier rectifies the AC power to DC. A input protection circuit is also provided to prevent over-voltage or under-voltage conditions.

The second stage of the power conversion is provided by the main switch-mode power supply, which consists of an AC voltage controller (AVC), a controller IC, a couple of half-bridge mosfets, and few other passives like inductors and capacitors. The AVC senses the load current and adjusts the pulses given to the MOSFETS accordingly to maintain the desired output voltage. This stage also contains protection circuits to ensure the safety of the system. It provides over-voltage, over-current, overload, and short-circuit protection.

The graphical user interface (GUI) of the SP7663EB makes the product user-friendly. It provides the user with a modern and attractive visual interface, enabling monitoring and controlling of the SMPS. This GUI allows the user to adjust the output voltage, monitor the current, control the MOSFET switching frequency, and test other features, offering a complete and easy-to-manage power conversion system.

In conclusion, the SP7663EB evaluation board is a very reliable and efficient off-line SMPS. It provides adjustable output voltage and over-voltage, over-current, and overload protection. Additionally, this board offers a modern graphical user interface for monitoring and controlling the power supply, making it suitable for a variety of DC/DC and AC/DC applications.

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