IQ2415S

DC-DC converters are an extremely important part of many electronic systems and products. The IQ2415S application field and working principle demonstrates just how versatile and essential these converters can be.The IQ2415S is a high performance, isolated DC-DC converter with advanced features including input/output isolation, wide input voltage range, low leakage current, and built-in EMI filter. This isolated converter uses synchronous rectification topology for efficient and fast transient operation and has a frequency up to 300 kHz. The IQ2415S is usually used in industrial applications such as industrial automation, motor control, renewable energy systems, electric vehicles, and in aerospace and defense applications. It can also be used as an interface between a battery and a 12 or 24V system.The working principle of the IQ2415S comprises of two parts: the power stage and the isolated transformer stage. The power stage consists of a high-efficiency flyback (or buck) DC converter which rectifies the incoming DC voltage before it is stepped down to the output voltage. The transformer stage is an isolated transformer which provides a galvanic isolation between the voltage domains. The secondary winding of the transformer is further rectified by a synchronous rectification process to produce the output voltage. The flyback converter in the power stage of the IQ2415S works on an oscillating resonance principle. This means that the output voltage is switched on and off at the resonance frequency and this cycle is repeated to keep the output voltage constant. A constant voltage is maintained, even when the input and output voltages are different.The synchronous rectification process in the isolated transformer stage of the IQ2415S uses enhanced switches to rectify the secondary winding voltage, resulting in high efficiency. The frequency of this process is variable, and is determined by the switching frequency of the primary side of the power stage. In summary, the IQ2415S is a high performance, isolated DC-DC converter with advanced features, and is suitable for a wide range of applications. It is composed of a power stage and an isolated transformer stage, and works by using an oscillating resonance principle to maintain a constant voltage, even when the input and output voltages are different. The synchronous rectification process is used to rectify the secondary winding voltage, resulting in high efficiency.

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