What are the characteristics of switch power supplies?

Switch power supplies utilize modern power electronics technology to control the on and off time ratio of the switching device, maintaining a stable output voltage. They are generally composed of pulse width modulation (PWM) control ICs and MOSFETs. With the development of power electronics technology, switch power supply technology is also continuously evolving. Currently, switch power supplies are widely used in almost all electronic devices due to their small size, light weight, and high efficiency, making them an indispensable power supply method in the rapid development of today's electronic information industry.

Main characteristics:

Switch power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instruments, medical equipment, semiconductor cooling and heating, air purifiers, electronic refrigerators, LCD displays, LED lamps, communication devices, audiovisual products, security monitoring, LED lamp bags, computer cases, digital products, and instruments, among other fields.

1. Small size, light weight: Due to the absence of a power frequency transformer, the size and weight are only 20-30% of that of linear power supplies.

2. Low power consumption, high efficiency: Power transistors operate in a switching state, resulting in low power consumption on the transistors and high conversion efficiency, generally 60-70%, while linear power supplies only achieve 30-40%.