JCB0348S12

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DC-DC converters are widely used in many applications, ranging from industrial, automotive and marine applications to medical applications. They are versatile in their use, providing efficient power conversion, reliable performance, high-speed switching and low power consumption. The JCB0348S12 DC-DC convertor is a compact, high performance, high frequency, synchronous step-down switch mode power supply module designed to reduce power supply voltage cost. It features a high efficiency of up to 96-97%, wide range of input voltage from 4.5V to 20V DC and output current range up to 3A.

The JCB0348S12 uses advanced high-frequency power switches and MOSFETs to achieve a low start-up current, low noise and low power consumption. It also provides DC-DC conversion at wide input and output voltage range, and has a soft-start time of around 25ms. Additionally, this module can support power up to 500KHz. It can be used to convert 12V input voltage to 5V DC, with an output current up to 3A.

This module is widely used in a variety of fields, such as automotive products, industrial automation systems, inverters, medical painting machines, decoration lights, CNC machines, etc. It can also be used to provide efficient and reliable power supplies to electronic gadgets such as mobiles, tablets, computers and many other embedded device systems for reliable performance.

The working principle of JCB0348S12 is based on the switch-mode power supply (SMPS) topology switching circuit, which drives a power MOSFET switch from the control loop. This module includes two fixed oscillators, two control loop circuits and two power monitoring circuits. The frequency of the oscillators is determined by the fixed resistor connected to it and the input voltage level. The frequency of the two oscillators is slightly different to generate a difference in the pulse width of the switch. This difference in pulse width will cause a difference in the on-off cycle of the MOSFET switch which results in a variable output voltage.

The control loop monitors the output voltage of the power supply and, when it gets lower than the required voltage, the MOSFET switch is switched on for a certain period of time. The output voltage is then raised to a level higher than the required voltage. The MOSFET switch is then switched off and the output voltage is regulated to the required value, as the frequency of the oscillators remains constant. This process keeps repeating to regulate the output voltage, ensuring a stable power supply with efficient and reliable performance.

The JCB0348S12 DC-DC convertor has a wide range of application and working principle that makes it a perfect choice for a variety of applications. It features high efficiency, wide range of input and output voltage levels, low power consumption and low-noise operation. It is also simple and easy to use and provides reliable power conversion to many electronic systems.

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