What is Switching Power Supply?

1、What is the switching power supply？

Switching power supply, also known as switching power supply, switching converter, is a high-frequency electrical energy conversion device, is a kind of power supply. Its function is to convert a level voltage into the voltage or current required by the client through different forms of architecture. The input of the switching power supply is mostly AC power or DC power supply, and the output is mostly a device that requires DC power supply, and the switching power supply converts voltage and current between the two.

The high conversion efficiency of the switching power supply is one of its major advantages, and because the switching power supply operates at a high frequency, small size and light weight transformers can be used, so the switching power supply will also be smaller than the linear power supply and will be lighter.

2、Advantages

(1) Small size, light weight: because there is no power frequency transformer, the volume and weight is only 20 to 30% of the linear power supply.

(2) Low power consumption and high efficiency: the power transistor works in the switching state, so the power consumption on the transistor is small, and the conversion efficiency is high, generally 60 to 70%, while the linear power supply is only 30 to 40%.

(3) Simple structure, high reliability: easy maintenance, current ripple rate can be easily achieved relatively low.

3、The main use

Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration, air purifier, electronic refrigerator, liquid crystal display, LED lamps, communication equipment, audiovisual products, security monitoring, LED light belt, computer chassis, Digital products and instruments.

4、Main categories

In the field of switching power supply technology, the development of related power electronic devices and the development of switching frequency conversion technology, the two promote each other to promote the switching power supply to develop in the direction of light, small, thin, low noise, high reliability and anti-interference with a growth rate of more than two digits every year. Switching power supplies can be divided into AC/DC and DC/DC two categories.

5、Working conditions

(1) Switching: Power electronics operate in a switched state rather than a linear state

(2) High frequency: Power electronic devices operate at high frequencies rather than low frequencies close to the power frequency

(3) Dc: The switching power supply outputs DC instead of AC

6、Working principle

Switching power supply is to let the power transistor work in the on-off and off state, in these two states, the voltammetry product added to the power transistor is very small (in the on-off, low voltage, large current; When turned off, high voltage, low current)/volt-ampere product on the power device is the loss generated on the power semiconductor device.

Switching power supplies have two main modes of operation: forward conversion and boost conversion.

7、Welcome to buy from us

Starwell Technology Co., Ltd. was established 12 years ago, strict implementation of ISO9001 quality control standards, with a considerable scale of production capacity and quality assurance system, excellent service has won the trust of domestic and foreign users, products are mainly sold to Europe, South Korea, India, Brazil, and other countries in the world. Multiple plug types are available.