JCD0412D24

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DC-DC converters are an important component in a wide range of applications and are found in a variety of applications ranging from automotive to medical. The JCD0412D24 is a DC-DC converter specifically designed for higher power applications that require very high efficiency and very low ripple and noise. This converter is part of the JQ series from JQ and is a renowned product in the market. The main features of the product include its high efficiency (85%), wide input voltage range (15-400Vdc) and very low ripple and noise levels (40mVpp and 10mVrms).The JCD0412D24 is an isolated DC-DC converter with a single output and employs synchronous rectification for very high efficiency. It is designed for applications such as LED lighting, EV battery charging, DC/DC switching power supply, motor drive and more. Its output power can be up to 200W and it can operate with input voltages from 15 to 400Vdc. It is also equipped with overvoltage protection, short-circuit protection, over-temperature protection and under-voltage lockout for maximum safety.The JCD0412D24 employs a two-stage circuit topology – the first stage is a voltage-mode discontinuous conduction mode (DCM) and the second stage is a voltage regulatory loop (VRL). The input voltage goes through the input capacitor and is then rectified by a MOSFET switch which is connected to the primary winding of the transformer.The energy is then transferred to the secondary winding of the transformer and is rectified by the synchronous rectifier MOSFETs. The DC voltage is then filtered by the output capacitor and regulated through the second stage voltage variator loop. This loop monitors the output voltage using a voltage differential amplifier and optimizes the duty cycle applied to the MOSFET switches of the synchronous rectifier for efficient operation.The JCD0412D24 has a high power factor 400Vac input and is designed to reduce harmonic distortion by ensuring that the coupled transformer power remains as close to the input voltage as possible. It is also designed to withstand a 100% transient current stress without blowing an external fuse, enabling it to handle large surge currents without external fusing.Overall, the JCD0412D24 is an excellent solution for demanding applications that require high efficiency, low ripple and noise and a wide input voltage range. It is a reliable and cost-effective solution and is designed to be easy to use and integrate into any system. Its wide input voltage range and high power factor makes it well suited for a wide variety of applications.

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