In switching regulators and switched capacitor converters, an internal oscillator is used to set the switching frequency of the output transistor. The value of this switching frequency identifies certain external components used in the converter, determines the frequency of noise generated by the converter, and affects the performance of the converter.
Some converters allow the switching frequency to be changed by adjusting the internal oscillator frequency ("frequency adjustment") or by synchronizing the oscillator with an external power supply ("synchronization").
By increasing the switching frequency, it is possible to use smaller components (capacitors, inductors) in the converter output stage. This may reduce the efficiency of the converter due to increased switching losses unless higher quality components are also used.
Product classification:
Voltage regulators come in large tens to thousands of watts AC regulators, which are supplied to power the workings of large experimental and industrial and medical equipment. There are also small AC voltage stabilizers of a few watts to a few kilowatts, which are used to provide high quality power for small laboratories or household appliances.
Based on the different nature of the output of the regulator, the regulator is generally divided into AC voltage regulator (AC voltage regulator) and DC voltage regulator (DC voltage regulator) two categories. The following focuses on DC regulated power supply, referred to as voltage stabilized power supply.
Based on the operating state of the regulator, the regulated power supply is often divided into two categories: linear regulated power supply and switching regulated power supply. In addition, there is a small power supply that uses a voltage regulator.