IW1818-EVAL

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DC/DC and AC/DC off-line SMPS have become increasingly popular across a range of industries. This is primarily due to their affordability, robust performance, high efficiency, and overall convenience. The IW1818-EVAL evaluation board is a popular choice for evaluating off-line power supplies. In this article, we will explore the application field and working principle of the IW1818-EVAL board.The IW1818-EVAL evaluation board is designed to evaluate off-line power supplies used in a range of applications, including telecom, networking, storage, and industrial automation systems, among others. It is designed to provide highly accurate evaluation and testing of all aspects of off-line power supply operation. It is equipped with a wide range of features, including onboard digital switching modulation for control, digital delay line synchronization, digital timing loop for optimization, a fault protection circuit, overload protection, and more.The IW1818-EVAL evaluation board is based on a universal switching power supply topology, designed to achieve a wide output voltage and current range. The board is equipped with two input sources: either 230VAC or 110VAC, and two outputs of 12V and 5V. Additionally, the board includes a wide range of features, such as overload, short circuit, over temperature, and over voltage protections, all of which guarantee the safety of the system.The IW1818-EVAL evaluation board makes use of an advanced pulse-width-modulated (PWM) current-mode control technique. This technique provides a way to effectively control the voltage output without introducing significant switching frequency noise. The PWM control technique utilizes the switching action of the voltage regulator to generate a high-frequency sine wave signal which is then sent to the device being tested. This process is called pulse-width-modulation and is an essential component of the current-mode control technique of the IW1818-EVAL board.The IW1818-EVAL board also makes use of a synchronous rectifier technique. This technique helps to reduce switching losses and improve power supply efficiency. The synchronous rectifier technique also allows for increased power supply accuracy, by providing better feedback control of the input voltage. Additionally, by using a synchronous rectifier technique, the IW1818-EVAL board can reduce the size and weight of the power supply, making it much more suitable for portable applications.The IW1818-EVAL evaluation board also features a wide range of protections to ensure the safety of the system. These include thermal shutdown, overload protection, short circuit protection, and over voltage protection. Additionally, the IW1818-EVAL board includes a low dropout (LDO) voltage regulator, designed to maintain power supply stability and reduce noise and interference.In conclusion, the IW1818-EVAL evaluation board is an ideal solution for evaluation and testing of off-line power supplies. It makes use of advanced pulse-width-modulation and synchronous rectifier techniques to achieve an optimal output voltage and current range. Additionally, the board includes a wide range of protections, including thermal shutdown, overload protection, short circuit protection, and over current protection. This makes the IW1818-EVAL board an ideal choice for evaluating off-line power supplies used for a variety of applications.

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