FSB70550

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Power driver modules are an important part of the power system, their main task is to drive the main power transfer circuit, so as to achieve the power transmission or transformation and conversion between the power supply circuit and the equipment. FSB70550 is a kind of common power driver module, the application field and working principle of it should be pay attention to, this essay will explain this on detail.

FSB70550 is a high performance, cost-effective control power module. The power module can provide a stable and reliable power supply for industrial control systems; the power module has a wide input voltage range, a 36-75 VDC low voltage input, and a 220-480 VDC wide voltage input; the power module can also provide 5V power source for the control system up to 9A. In addition, the power module also supports a variety of fault detection functions, including overvoltage, undervoltage, power grid frequency unbalanced, over current and so on. Therefore, the power module can ensure the safe and reliable operation of industrial control system.

The working principle of FSB70550 is based on the principle of self-excitation and frequency control. The power module has two external terminals, one of them is connected to the power supply system, the other is connected to the load. When the voltage of the power system is greater than the set voltage, the power module starts to work. In the beginning, the internal static switch is activated to send part of the power supply system to the dynamic excitation transformer, and then the current in the transformer is amplified by the boost winding and converted into a voltage. The voltage is then outputted to the module\'s internal electromagnet, and the electromagnet generates a magnetic field.

In order to support the maintaining of the power source output voltage, the module\'s internal high voltage and low voltage loop will use the current running in the dynamic excitation loop to close the static switch, together with the high voltage static switch, disconnect the power supply system from the dynamic excitation transformer. This will create a closed loop that enables to maintain the same voltage output. When the voltage of the power system reaches 50 V or higher, the power module will start to output the 9A power source.

From above explanation, it can be seen FSB70550 is a cost-effective control power module with high-performance and high reliability, which is widely used in electricity substation, industrial control system and other places. The main purpose of FSB70550 power module is to send and manage power to the loads in the industrial control system, and the working principle relies on the self-excitation and frequency control.

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