Circuit principle of the power module

First, the working principle

The switching component of the circuit principle of the power module is a power semiconductor device, whose on-off switch controls the duty ratio of the switching component in order to adjust the output voltage, and then according to the requirements of the environment and products and some circuit design to bear the functions of voltage change, isolation, filtering and so on. Therefore, module power supply is a switching power supply with higher integration, better function and efficiency.

In a power supply module, the input power is first passed through a rectifier, through which AC power is converted to DC power. The DC power supply is then fed into an electrical conduit, through which the power module controls the current and thus the output voltage. This voltage then passes into a filter, through which the PSU stabilizes the output voltage at a constant level. Finally, the output current is passed to the main circuit to power the device.

The working principle of the power module also involves the efficiency of power conversion. In the working process of the power module, there is energy loss in the electrical energy conversion between the output and the input, and the best power conversion efficiency can be achieved through the power module technology. The actual power conversion efficiency of the power module can be optimized and adjusted according to different output voltages and output currents.

Two, different from ordinary power supply

Module power supply is one kind of switching power supply. Compared with ordinary switching power supply, it has many advantages. It provides power for integrated circuits, signal processors, memory, and other digital or analog loads. For example, the DC-DC isolated power supply with constant voltage input and non-regulated voltage output has high efficiency, small size, high reliability, shock resistance, good isolation, and wide temperature range.

To sum up, the working principle of the power module is the key factor for the normal operation of the electronic equipment by converting the input power into the power supply suitable for the electronic equipment and ensuring the stability of the output current and voltage.

For more circuit knowledge about power modules and transformers, you can consult Zou Gong, senior design engineer of Shenzhen YLZ Technology Co., LTD.