VE-24L-IV-F1

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DC-DC converters are electrical systems used to convert one DC voltage into another. The Ve-24L-IV-F1 is one of the common converters, and its application field and working principle is essential to understand when researching DC power systems.

Generally speaking, the Ve-24L-IV-F1 converter is used for high current applications, such as rolling stock and automotive applications. It is a synchronous buck converter which is capable of high-load efficiency. It also features very low THD and low EMI, making it ideal for a wide range of applications.

The core of the Ve-24L-IV-F1 converter is an isolated circuit, referenced as Isolated-Input Output (ISO-IO). This ISO-IO circuit is based on a two-stage control approach: an outer voltage control loop and an inner current control loop. The outer loop is responsible for voltage regulation and the inner loop for load current regulation. It helps maintain a stable output voltage even under dynamic load conditions.

To start the system, an isolated signal is applied to the ISO-IO circuit, the bridge circuit which serves as the interface between the power source and the isolated circuit. The bridge rectifies the incoming power before it feeds the voltage through to the full-bridge converter, boosting it up. As the full-bridge converter runs inversely, it then reduces the voltage for the output stage.

The output stage is the last component of the converter. It is where the power is delivered to the load. It can be configured as a buck converter to reduce the voltage from the input to the output. In that case, a low-side MOSFET is used to draw current from the power source, while a high-side MOSFET works as the output switch. When the low-side MOSFET is turned on, the current will go through the inductor and create a magnetic field, storing the energy as a result. When the low-side MOSFET is turned off, the current will go through the output switch, MOSFET, and then to the load.

In summary, the Ve-24L-IV-F1 is an ideal converter for high current applications. Its core mechanism employs an ISO-IO circuit to rectify and boost the voltage from the input to the output stage. It is very efficient in providing a stable voltage with low THD and low EMI. Its performance makes it suitable for many kinds of applications, such as rolling stocks and automotive applications.

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