Switch Mode Power Supply

A Switch Mode Power Supply is a power supplies that combines the switching regulator so that efficient conversion to electrical power. Electrical load into the power supply, then converted to voltages and currents as desired, for example, 12 volt power supply.

The advantage of the switch mode power supply is a more efficient, lighter weight and smaller size. It also produces a lower heat for a successful efficiency. It is classified into four types according to the wave input and output, namely:
1. AC / DC: rectifier
2. DC / DC: DC to DC converter
3. AC / AC: frequency changer
4. DC / DC: inverter

Switch mode power supplies are classified based on circuit topology, the converter non-isolated and isolated. Isolated topology, including transformer, can results in lower output or higher than the input by adjusting the ratio of turns. Most converters use a separate inductor, while others use a transformer. Whereas the non-isolated topology is very simple using a single inductor to store energy.

Application switch mode power supply is available in several areas. Samples for personal computer products that have a universal input power supply can be received from all over the world. The frequency is 50 Hz to 60 Hz with voltages up to 240 Volt 100 Volt.

The application switch mode power supplies are classified based on circuit topology, the converter non-isolated and isolated. Isolated topology, including Transformers, can result in lower output or higher than the input by adjusting the ratio of turns. Most converters use a separate inductor, while others use combination transformers. Whereas the non-isolated topology is very simple using a single inductor to store energy.

Application switch mode power supply is available in several areas and manufacturer. Samples for personal computer products that have a universal input power. Supplies can be received from all over the world. The frequency of his ID is 50 Hz to 60 Hz with voltages up to 240 Volt.

Now, almost all notebooks have a regulator module-DC-DC converter on the motherboard to lower voltage power supply for the CPU cores can be accepted. In addition, there are motherboards that have settings in the BIOS to do over-clocker which controls the CPU voltage.

This application becomes important where the frequency and voltage cannot be produced by the primary source. In the industrial trucks that use 24 volts DC. But It may require 12 volt DC to convert an ordinary car to drive equipment.

Switch mode power supplies transformers run at high frequencies. This is based on the fact that the high frequency transformer low frequencies compare the smaller. The amount of energy stored by a transformer depends on the high and low frequency switching.

The energy transfer is usually low frequency transformer design via core (soft iron), while the core has a high limit leakage.

Switch mode power supply is now used widely. It has a function to reduce the unregulated dc input voltage into regulated dc output with Buck Converter Circuit, dc output multiplier increases, reversing the dc input voltage to the converter choke, increasing unregulated dc voltage into the dc voltage converter, it shall be regulated by Boos Converter.

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