A switching power supply is a power supply that uses modern power electronics technology to control the time ratio of switching on and off to maintain a stable output voltage. Switching power supply is generally composed of a pulse width modulation (PWM) control IC and a MOSFET. With the development and innovation of power electronic technology, switching power supply technology is also constantly innovating. So what are the main characteristics of switching power supply? Let's follow the editor of Mingjinfang to take a look!

Main features of switching power supply:

1. High efficiency and low power consumption. The adjustment tube of the switching power supply works in the switching state, so the power consumption of the adjustment tube is extremely small, and the efficiency is above 80%.

2. Safe and reliable. Switching power supply can easily design automatic protection circuit. When the circuit fails or is short-circuited, the power supply can be automatically cut off to prevent the expansion of the fault range.

3. High stability and reliability. The low power consumption results in a low temperature rise in the electronic equipment, reducing the high temperature damage rate of the surrounding components, and greatly improving the thermal stability and reliability of the equipment.

4. Wide voltage regulation range. When the AC input voltage of the linear regulated power supply is lower than 160V, the output voltage will not be stable, and when the input AC voltage is too high, the efficiency will be reduced. The switching power supply AC input voltage is 130 -- It can achieve a good voltage regulation effect when changing within the range of 260V.

5. Small size and light weight. The switching power supply can directly rectify the AC voltage input by the power grid, and then obtain various AC voltages through the high-frequency transformer, which saves the bulky power frequency transformer and greatly reduces the weight of the power supply. In addition, due to the high operating frequency of the switching power supply, the filter capacitors and inductors can use components with smaller values, which can also reduce the volume and weight.

The above main features of switching power supplies are shared here. At present, countries around the world are vigorously developing new switching power supplies to adapt to the miniaturization and high Efficiency, etc.