In the field of switching power supply technology, people are developing related power electronic devices while developing switching frequency conversion technology. The mutual promotion of the two promotes the development of switching power supply towards light, small, thin, low noise, high reliability, and anti-interference with a growth rate of over two digits each year. Switching power supplies can be divided into two categories: AC/DC and DC/DC.
Micro Low Power Switching Power Supply
Switching power supply is moving towards popularization and miniaturization. Switching power supply will gradually replace all applications of transformers in life. The application of low-power micro switching power supply should first be reflected in digital display meter, smart meter, mobile phone charger, etc. At present, the country is vigorously promoting the construction of smart grids, and the requirements for energy meters have significantly increased. Switching power supplies will gradually replace transformers in the application of energy meters.
Reverse series switching power supply
The difference between a reverse series switching power supply and a general series switching power supply is that the output voltage of this reverse series switching power supply is negative, which is exactly opposite to the polarity of the positive voltage output of a general series switching power supply; And because the energy storage inductor L only outputs current to the load when the switch K is turned off, under the same conditions, the output current of the reverse series switching power supply is twice that of the series switching power supply.